Lower body explosive power (LBEP) forms a critical component in any individual and team sport performance and it is therefore essential to develop a means of predicting LBEP in adolescents for early identification of future talent in various sporting codes. LBEP is frequently used by athletes during matches or competitions where explosive movements such as jumping, agility running and sprinting are required for successful performance. These movements are usually found in individual sports such as long jump and high jump as well as in team sports such as basketball, volleyball and soccer. To date not much literature is available on LBEP, especially with regard to LBEP prediction models. Furthermore, studies on adolescents are scarce and a LBEP prediction model has not yet been developed for a South African adolescent population. It is against this background that the objectives of this study were firstly, to develop a LBEP prediction model from various physical and motor performance components among a cohort of adolescents living in the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province, South Africa; and secondly, to develop a LBEP prediction model from several anthropometric measurements among a cohort of male and female adolescents living in the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province, South Africa. Two hundred and fourteen (15.8±0.68 years) 15-year-old adolescents (126 females, 88 males) from 6 surrounding schools within the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province of South Africa were purposefully selected from pre-acquired class lists took part in the study. Data was collected by means of various questionnaires as well as anthropometrical, physical and motor performance tests. For representation of LBEP a principal component factor analysis was done and the results indicated that the vertical jump test (VJT) was the best indicator of LBEP in the cohort of adolescents. With regard to the anthropometrical related LBEP prediction model, the forward stepwise regression analysis yielded a correlation coefficient of R2 = 0.69. The following variables contributed significantly (p≤0.001) to the anthropometrical LBEP prediction model: stature (57%), muscle mass percentage (10%) and maturity age (3%). The LBEP prediction model that was developed equated to LBEP (vertical jump) = -136.30 + 0.84(stature) + 0.7(muscle mass percentage) + 4.6(maturity age). Variables other than the variables that formed part of the study could explain the further 31% variance in the LBEP of the adolescents. The physical and motor performance LBEP prediction model indicated that gender (39%) and 10 m speed (7%) contributed significantly (p ≤ 0.001) to the overall prediction of the LBEP of the adolescents. The LBEP prediction model delivered a stepwise forward regression analysis coefficient of R2=0.458 and a prediction formula LBEP = 68.21 + 9.82 (gender) – 18.33(10 m speed). The remaining 56% of the variance in the results could be explained by other factors than the variables considered in the study. In conclusion, to the best of the researchers’ knowledge, this is the first study which has made an attempt at developing LBEP prediction models from the anthropometrical, physical and motor performance components of a cohort of adolescents of South Africa. The prediction models developed in the study will assist teachers sport scientists and sporting coaches who have limited resources available, to measure and calculate LBEP in adolescents, with the means to do so in South Africa. Further high quality studies are necessary to further improve and develop such prediction models for various age groups of adolescents in the greater South Africa. / MSc (Sport Science), North-West University, Potchefstroom Campus, 2014

This study indicates that communication skills and communication apprehension of English First Additional Language (EFAL) learners are important aspects in teaching and learning, as well as for academic performance. A learner‘s major hurdle to overcome in communication in a second language classroom is a fear of failure. Communication skills and communication apprehension are challenges teachers have to face in language classrooms. Communication barriers that may lead to fear, distress and poor performance should be identified at an early stage. Therefore, it is critical for teachers to know about the communication process, communication skills, and communication apprehension to design positive solutions and teaching strategies to assist learners to overcome fear of communication, especially in the area of second and additional languages. A sample of 779 male and female learners in the secondary phase in Kannaland District, Western Cape participated in the study. For this non-experimental quantitative study, data were gathered using two questionnaires, Communication Skills Scale, and the Personal Report Communication Apprehension questionnaire. To explore the relationship between communication skills, communication apprehension and academic achievement, the first and second term EFAL marks of grades 7-9 learners were used. The data were presented as descriptive statistics, factor analysis, reliability analysis, correlations and comparisons. Results distinguished no differences between males, females, or grades. Findings were discussed with regard to communication skills and the academic achievement, as well as communication apprehension and academic achievement of the learners. Results indicate that there is no significant relationship between communication skills and academic achievement. Nevertheless, distinct relationships between communication skills and communication apprehension (group work, meetings and public speaking) were established and discussed. Communication apprehension (group work, conversations and in the classroom) and academic achievement presented clear relationships that were reported in detail. The factors identified may have a negative impact on learners‘ academic achievement in EFAL. Insight generated by the research in Kannaland District, Western Cape will help to develop an understanding of the situations that affect the degree of communication apprehension of secondary phase EFAL learners. It will allow for a better understanding of the influence of communication skills and could assist teachers to understand EFAL learners‘ fear, distress or ability to communicate. / MEd (Curriculum Development), North-West University, Potchefstroom Campus, 2015

Lower body explosive power (LBEP) forms a critical component in any individual and team sport performance and it is therefore essential to develop a means of predicting LBEP in adolescents for early identification of future talent in various sporting codes. LBEP is frequently used by athletes during matches or competitions where explosive movements such as jumping, agility running and sprinting are required for successful performance. These movements are usually found in individual sports such as long jump and high jump as well as in team sports such as basketball, volleyball and soccer. To date not much literature is available on LBEP, especially with regard to LBEP prediction models. Furthermore, studies on adolescents are scarce and a LBEP prediction model has not yet been developed for a South African adolescent population. It is against this background that the objectives of this study were firstly, to develop a LBEP prediction model from various physical and motor performance components among a cohort of adolescents living in the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province, South Africa; and secondly, to develop a LBEP prediction model from several anthropometric measurements among a cohort of male and female adolescents living in the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province, South Africa. Two hundred and fourteen (15.8±0.68 years) 15-year-old adolescents (126 females, 88 males) from 6 surrounding schools within the Tlokwe local municipality of Dr Kenneth Kaunda district in the North-West Province of South Africa were purposefully selected from pre-acquired class lists took part in the study. Data was collected by means of various questionnaires as well as anthropometrical, physical and motor performance tests. For representation of LBEP a principal component factor analysis was done and the results indicated that the vertical jump test (VJT) was the best indicator of LBEP in the cohort of adolescents. With regard to the anthropometrical related LBEP prediction model, the forward stepwise regression analysis yielded a correlation coefficient of R2 = 0.69. The following variables contributed significantly (p≤0.001) to the anthropometrical LBEP prediction model: stature (57%), muscle mass percentage (10%) and maturity age (3%). The LBEP prediction model that was developed equated to LBEP (vertical jump) = -136.30 + 0.84(stature) + 0.7(muscle mass percentage) + 4.6(maturity age). Variables other than the variables that formed part of the study could explain the further 31% variance in the LBEP of the adolescents. The physical and motor performance LBEP prediction model indicated that gender (39%) and 10 m speed (7%) contributed significantly (p ≤ 0.001) to the overall prediction of the LBEP of the adolescents. The LBEP prediction model delivered a stepwise forward regression analysis coefficient of R2=0.458 and a prediction formula LBEP = 68.21 + 9.82 (gender) – 18.33(10 m speed). The remaining 56% of the variance in the results could be explained by other factors than the variables considered in the study. In conclusion, to the best of the researchers’ knowledge, this is the first study which has made an attempt at developing LBEP prediction models from the anthropometrical, physical and motor performance components of a cohort of adolescents of South Africa. The prediction models developed in the study will assist teachers sport scientists and sporting coaches who have limited resources available, to measure and calculate LBEP in adolescents, with the means to do so in South Africa. Further high quality studies are necessary to further improve and develop such prediction models for various age groups of adolescents in the greater South Africa. / MSc (Sport Science), North-West University, Potchefstroom Campus, 2014

This study indicates that communication skills and communication apprehension of English First Additional Language (EFAL) learners are important aspects in teaching and learning, as well as for academic performance. A learner‘s major hurdle to overcome in communication in a second language classroom is a fear of failure. Communication skills and communication apprehension are challenges teachers have to face in language classrooms. Communication barriers that may lead to fear, distress and poor performance should be identified at an early stage. Therefore, it is critical for teachers to know about the communication process, communication skills, and communication apprehension to design positive solutions and teaching strategies to assist learners to overcome fear of communication, especially in the area of second and additional languages. A sample of 779 male and female learners in the secondary phase in Kannaland District, Western Cape participated in the study. For this non-experimental quantitative study, data were gathered using two questionnaires, Communication Skills Scale, and the Personal Report Communication Apprehension questionnaire. To explore the relationship between communication skills, communication apprehension and academic achievement, the first and second term EFAL marks of grades 7-9 learners were used. The data were presented as descriptive statistics, factor analysis, reliability analysis, correlations and comparisons. Results distinguished no differences between males, females, or grades. Findings were discussed with regard to communication skills and the academic achievement, as well as communication apprehension and academic achievement of the learners. Results indicate that there is no significant relationship between communication skills and academic achievement. Nevertheless, distinct relationships between communication skills and communication apprehension (group work, meetings and public speaking) were established and discussed. Communication apprehension (group work, conversations and in the classroom) and academic achievement presented clear relationships that were reported in detail. The factors identified may have a negative impact on learners‘ academic achievement in EFAL. Insight generated by the research in Kannaland District, Western Cape will help to develop an understanding of the situations that affect the degree of communication apprehension of secondary phase EFAL learners. It will allow for a better understanding of the influence of communication skills and could assist teachers to understand EFAL learners‘ fear, distress or ability to communicate. / MEd (Curriculum Development), North-West University, Potchefstroom Campus, 2015

Text in English, summary in English and Afrikaans / The purpose of this research was to investigate the effect of a performance management training programme on the attitudes of managers towards performance management. The research question was whether a performance management training intervention would change managers' attitude towards performance management. The respondent group consisted of 101 managers who responded to an advertisement and willingly participated in a performance management training programme. A quasi-experimental research design was used in which a pre-test and post-test was applied to the respondent group. The managers in the respondent group completed the same assessment instrument (or questionnaire) before and six months after the performance management training. The results of the empirical analysis indicated that female managers felt less positive about performance management than their male counterparts. No statistically significant change in the attitude and competency of managers towards performance management was found after they had attended the performance management training programme. / Die doel van die studie was om die impak van 'n prestasiebestuuropleidingsprogram op die houdings van bestuurders ten opsigte van prestasiebestuur te ondersoek. Die navorsingsvraag was of 'n opleidingsintervensie in prestasiebestuur, bestuurders se houdings ten opsigte van prestasiebestuur sou verander. Die respondentegroep het uit 101 bestuurders bestaan wat op 'n advertensie gereageer het en vrywillig deelgeneem het aan 'n prestasiebestuuropleidingsprogram. 'n Kwasie-eksperimentele navorsingsontwerp is gebruik waartydens 'n voor- en na-toets op die respondente toegepas is. Die bestuurders in die respondentegroep het dieselfde evalueringsinstrument voor en ses maande na die prestasiebestuuropleiding ingevul. Die resultate van die empiriese ontleding het getoon dat vroulike bestuurders minder positief oor prestasiebestuur gevoel het as hul manlike kollegas. Geen betekenisvolle statistiese verandering in die houdings en vaardighede van bestuurders ten opsigte van prestasiebestuur is gevind nadat hulle die prestasiebestuurprogram bygewoon het nie. / Industrial and Organisational Psychology / M.A. (Industrial Psychology)

Text in Afrikaans, abstract in Afrikaans and English / Die doel van hierdie navorsing was om te bepaal of betekenisvolle verskille bestaan tussen werknemerdoeltreffendheid en persepsies van gehalte van werklewe van bemagtigde en niebemagtigde skofwerkers in die Suid-Afrikaanse petrochemiese bedryf. Skofwerknavorsing het gedurende die afgelope dekade internasionaal toegeneem. Hiermee gepaardgaande het verskeie intervensies ontstaan om die doeltreffendheid van skofwerkers en hulle gehalte van werklewe te bevorder. Deur gebruik te maak van 'n gekombineerde vraelys ("Standard Shiftwork Index") en werklike data ten opsigte van afwesigheid en prestasiebeoordelings, is 'n steekproef van 102 gevalle geanaliseer. 'n 90 persent betroubaarheidinterval is gebruik om waardes ten opsigte van elke veranderlike te bepaal. Daar is bevind dat werknemerbemagtiging weinig invloed het op skofwerkers se werkbywoning. Daar is ook gevind dat werknemerbemagtiging nie lei tot 'n meer positiewe persepsie, by toesighouers, van skofwerkwerkers se algemene werkprestasie nie. Daar is egter bevind dat skofwerkers se persepsies van hulle gehalte van werklewe, ten opsigte van werkdissatisfaksie, chroniese vermoeidheid en tevredenheid met sosiale omstandighede, wel positiefbelnvloed word deur werknemerbemagtiging. Aanbevelings is gemaak ten opsigte van die aanwending van werknemerbemagtiging, as intervensie in skofwerkomgewings, asook vir verdere skofwerknavorsing in Suid-Afrika. / The purpose of this research was to determine if significant differences exist between employee effectiveness and perceptions of quality of working life of empowered and non-empowered shiftworkers in the South-African petrochemical industry. By using the Standard Shiftwork Index and real absenteeism and appraisal data, a sample of 102 cases was analysed. A 90 percent confidence interval was used to determine t-values for variables. It was found that empowerment has little influence on the work attendance of shiftworkers and that empowerment does not lead to more positive perceptions of general work performance of shiftworkers, among their supervisors. It was, however, found that shiftworkers' perceptions of their quality of working life are improved by empowerment in respect of work dissatisfaction, chronic fatigue and satisfaction with social circumstances. Suggestions were made concerning the use of empowerment, as an intervention, in shiftwork environments and for future shiftwork research in South-Africa. / Industrial & Organisational Psychology / M.Comm. (Bedryfsielkunde)

Afrikaans text / Hierdie navorsing handel oar die verwantskap tussen prestasiemotivering en interpersoonlike style. Die konsepte wat in die navorsing beskryf word, is prestasiemotivering (vanuit 'n humanistiese raamwerk} en selfgelding, responsiwiteit en aanpasbaarheid (vanuit 'n behavioristiese raamwerk). Die gekose meetinstrumenter naamlik, die Bestuursmotiefvraelys vir prestasiemotivering en die lnterpersoonlike Verhoudingsvraelys vir interpersoonlike style, is op 'n steekproef van 155 middelvlakbestuurders wat die senior takseersentrum binne 'n semi-staatsdiens organisasie deurloop het, afgeneem. Die resultate is verwerk deur middel van korrelasie en regressie (enkelvoudig en meervoudig) tegnieke. Die korrelasie.:.analise het getoon dat daar 'n statisties betekenisvolle korrelasie bestaan tussen prestasiemotivering en selfgelding. Die enkelvoudige regressie-analise het getoon dat selfgelding, responsiwiteit en aanpasbaarheid 'n invloed op prestasiemotivering uitoefen. Die korrelasie- en regressie-analise dui daarop dat responsiwiteit en aanpasbaarheid 'n negatiewe invloed uitoefen op prestasiemotivering. 'n Moontlike voorspellingsmodel vir prestasiemotivering is nie ontwikkel nie, aangesien die integriteit van die resultate betwyfelword. / Hierdie navorsing handel oar die verwantskap tussen prestasiemotivering en interpersoonlike style. Die konsepte wat in die navorsing beskryf word, is prestasiemotivering (vanuit 'n humanistiese raamwerk} en selfgelding, responsiwiteit en aanpasbaarheid (vanuit 'n behavioristiese raamwerk). Die gekose meetinstrumenter naamlik, die Bestuursmotiefvraelys vir prestasiemotivering en die lnterpersoonlike Verhoudingsvraelys vir interpersoonlike style, is op 'n steekproef van 155 middelvlakbestuurders wat die senior takseersentrum binne 'n semi-staatsdiens organisasie deurloop het, afgeneem. Die resultate is verwerk deur middel van korrelasie en regressie (enkelvoudig en meervoudig) tegnieke. Die korrelasie.:.analise het getoon dat daar 'n statisties betekenisvolle korrelasie bestaan tussen prestasiemotivering en selfgelding. Die enkelvoudige regressie-analise het getoon dat selfgelding, responsiwiteit en aanpasbaarheid 'n invloed op prestasiemotivering uitoefen. Die korrelasie- en regressie-analise dui daarop dat responsiwiteit en aanpasbaarheid 'n negatiewe invloed uitoefen op prestasiemotivering. 'n Moontlike voorspellingsmodel vir prestasiemotivering is nie ontwikkel nie, aangesien die integriteit van die resultate betwyfelword. / This research deals with the relationship between achievement motivation and interpersonal styles. The concepts achievement motivation (from a humanistic point of view} and assertiveness, responsiveness and versatility {from a behavioristic point of view), have been described in this research. The chosen measuring instruments, namely the Management Motive questionnaire for achievement motivation and the Interpersonal Relations questionnaire for interpersonal styles, were administered by means of sampling a group of 155 from middle management who participated in the senior assessment centre in a semi-government organisation. The results were processed by using correlation and regression (simple and multiple) techniques. The correlation analysis showed significant statistical correlation between achievement motivation and assertiveness. The single regression analysis indicated that assertiveness, responsiveness and versatility have an influence on achievement motivation. The correlation and regression analysis showed that responsiveness and versatility impact negatively on achievement · motivation. The possible prediction model for achievement motivation has not been developed due to the integrity of the results being doubtful!. / Industrial and Organisational Psychology / MCOM (Bedryfsielkunde)

Rugby is a popular sport in South Africa, and has been played by young boys from as early as seven years old (South African Rugby Union [SARU], 2011). Despite various physical health benefits, it carries a high risk for injury, especially head injury, and consequently has a high incidence of concussion (Alexander, 2009; Laubscher, 2006; Shuttleworth-Edwards, Smith & Radloff, 2008). It is common for 12 to 13 per cent of adolescent rugby players to report mild traumatic brain injury or concussion per season (Laubscher, 2006; Shuttleworth-Edwards et al., 2008). The true incidence is however considered to be higher, even as high as 70.4% (Shuttleworth-Edwards et al., 2008). Concussion, otherwise known as mild traumatic brain injury (mTBI) is described as a traumatically induced alteration in mental status, or traumatically induced cerebral dysfunction (Kraus, McArthur, Silvermand & Jayaraman, 1996) which may, or may not involve loss of consciousness (Quality Standards Subcommittee, American Academy of Neurology [AAN], 1997). The nature of concussion has traditionally been considered to be transient, and symptoms are usually resolved within a few days or weeks (Kirkwood et al., 2008; Taylor et al., 2010). However, when concussions are not fully resolved prior to players returning to the game, they may be vulnerable to second impact syndrome. This syndrome causes herniation and brain oedema, which may result in death (Patel, 2005), as has been reported in South African press (Alexander, 2009; South African Press Association [SAPA], 2012). Even without second impact syndrome, repeated concussions may render the brain neurocognitively vulnerable, leading to an array of short- and long-term cognitive symptoms (Alexander, 2009; Shuttleworth-Edwards et al., 2008). Short-term problems include difficulties with attention, focus and concentration; following multi-step instruction, engaging in mental problem-solving; verbal expression, receiving and processing verbal and visual information; maintaining effective levels of mental and physical energy; controlling mood; suppressing impulsive behaviours; initiating and maintaining productive interpersonal relationships with peers; engaging in meaningful conversation and participating in group activities (Jantz & Coulter, 2007). Short-term cognitive impairments due to repeated concussion have also been found, and include amongst the former symptoms, also problems with delayed memory, learning, social functioning, and abstract thinking (Anderson, Brown, Newitt & Hoile, 2011; Laubscher, 2006). Long-term sequelae follow when children did not return to their baseline level of functioning after three months (Kirkwood et al., 2008; Taylor et al., 2010). Long-term sequelae include problems with memory, visuo-motor processing, executive functioning, learning and abstract thinking (Anderson, 2002; Anderson et al., 2010; Horton et al., 2010; Lezak et.al., 2004; Shuttleworth-Edwards & Radloff, 2008). As mTBI is traditionally thought to be of transient nature, researchers tend to investigate moderate to severe TBI, rather than mTBI (Alexander, 2009; Anderson et al., 2010; Patel, 2005). This could easily lead to important facts about mTBI being missed or not acknowledged. Nevertheless, recent investigations are uncovering facts about mTBI that could transform the way in which we understand mTBI, providing increasing evidence that mTBI is more serious than widely believed (Blakemore, 2012; Maxwell, 2011; Toleda et al., 2012). However, there remains a lack of research investigating mTBI from a single cause. Considering the above information, the current study provides unique information about mTBI. It specifically investigated the long-term effects of mTBI on adolescents from a homogenous cause, which makes results more comparable. The importance of this study is highlighted in the face of evidence for the long-term effects of multiple concussions, that were sustained during school rugby, on academic achievement (Alexander, 2009; Laubscher, 2006).In the light of grey areas in existing research, the aim of this current study was to investigate whether there is a significant difference in academic achievement within and between two groups of adolescents that had either played rugby and sustained multiple concussions, or had not played rugby nor sustained any concussions, when measured at four points in time over six years. A retrospective data-analysis was performed on matched, controlled, prospective longitudinal data, which was obtained from a study that evaluated the impact of repeated mTBI on the cognitive and academic functioning of early adolescent rugby players over time (Alexander, 2009). This study elaborates on a subset of the previous data, adding the gr. 12 results for academic aggregate scores, to the previously reported academic dataset. Participants were selected from Alexander‟s study (2009), and had either played rugby and obtained two or more concussions (Rugby/Concussed (RC- group); n=17), or did not play rugby nor sustained any concussions (Non-rugby/Non-concussed (NRC-group); n=13). Academic aggregate scores from baseline (gr. 7) through gr. 12 were analysed using quantitative statistical measures. A normal probability plot determined that the data was distributed normally. Descriptive statistics were reported, where after repeated measures ANOVA‟s were conducted to determine the statistical significance of differences in academic scores between and within the groups over time. These results indicated that the NRC-group displayed statistically significant increase in academic achievement over time (p = .000), whereas the RC-group did not display any significant differences, despite displaying a downwards trend in achievement. The difference between the two groups was measured at its highest in gr. 12 (p = .003), indicating that the NRC-group performed statistically significantly better than the RC-group over time. However, a Pearson‟s correlation test revealed that the estimated IQ (Vocabulary subscale of the WISC-III) (Wechsler, 1991) had a positive correlation on academic achievement [r(34) = .54, p < .05)]. To control for the effect that this correlation had on the academic results, an ANCOVA was conducted. This analysis indicated a statistically significant difference in academic achievement between the two groups in gr.12 (p = .004), with a large effect size (d = 1.41), implicating practical significance. Findings consequently confirmed our hypothesis. The significant increase in academic achievement observed within the NRC-group over time, is consistent with what could be expected if the brain is allowed to develop normally without disruption such as mTBI (Blakemore, 2012; Horton et al., 2010). The finding that the RC group did not display statistically significant intra-group differences in academic achievement when measured over time, but that academic achievement followed a downward trend, is difficult to substantiate in the literature. The few research studies on the effect of cumulative concussion on young athletes do not isolate academic achievement as a variable (Iverson et al., 2004; Shuttleworth-Edwards et al., 2008). Further research into intra-group differences in this specific area of enquiry and population group is therefore necessary. Normal cognitive and brain development, maintains that the brain develops in a posterior to anterior direction, and the prefrontal regions which are vulnerable to concussion, develop last (Anderson, 2010; Blakemore, 2012; Lezak, 2004). Whereas the primary motor and sensory areas and areas for receptive and expressive language are fully developed by the age of ten years, the prefrontal brain areas that are responsible for more complex and abstract thought repertoires only start maturing in early adolescence and this development continues up to the age of 24 and even into the early 30s (Toleda et al., 2012). Injury to the developing brain at this critical stage of maturation may adversely affect the development of cognitive skills, preventing the child from acquiring the effective cognitive strategies needed for normal academic functioning and adequate academic achievement after TBI (Horton et al., 2010). However, if there is no insult to the brain, cognitive functions are expected to develop normally as a result of synaptic pruning and increased white-matter volume in the prefrontal cortex (Blakemore, 2012), making it likely that the maturation of these abilities will lead to greater cognitive and academic ability (Blakemore & Choudhury, 2006), such as seen for the NRC-group in this study. Limitations for this study include a small sample size and the testing of only one variable. It is therefore recommended that future studies include more variables, and aim at creating a larger, randomized sample size, possibly providing a more representative pool of participants to study this phenomenon in South African context. It is also advised that future studies consider using neuropsychological measures to test cognitive functioning. As previous studies have indicated specific impairment in executive functioning after TBI, it may be worth researching the effect of concussion on executive functioning more thoroughly (Anderson, 2002; Anderson et al., 2010; Horton et al., 2010). Further it may be valuable to consider using functional MRI studies to broaden existing knowledge about the interaction between pathophysiology and cognitive functioning This study also highly recommends that schools and rugby clubs catering for child and adolescent players reconsider the importance of implementing proper return to play protocols after players obtain concussions. / Thesis (MA (Clinical Psychology))--North-West University, Potchefstroom Campus, 2013

The aim of this study was to assess the effective functioning of the Middle Management Learning Programme (MMLP) within the South African Police Service (SAPS), as well as evaluate the performance and effectiveness of employees who were sent for training to enhance their skills and develop their capacity in order to improve service delivery within the broader South African society. The research focused specifically on middle managers who had completed the MMLP. The MMLP was presented at the SAPS Academy in Thabong from 2007 to 2011. According to Meyer et al. (2004:225), a learning programme is a coordinated combination of learning activities, methodologies, processes and other elements of learning, crafted to assist learners to acquire the required knowledge, skills and attitudes. The primary objective of this study was, therefore, to evaluate the effective functioning of the MMLP within the SAPS and to provide sound recommendations based on the empirical findings. Semi-structured interviews and questionnaires were used to determine the effectiveness of the MMLP and obtain information from the respondents who completed the programme during the 2007/8 and 2009/10 financial years. The literature review, interviews and completion of the questionnaires by respondents confirmed the objectives of this study. The overall results indicated that the MMLP had a positive impact on middle managers in the SAPS. The middle managers appear to be driven by a need for recognition, and authorities could exploit this to its advantage by providing a reward system for good performance. The study concludes by, inter alia, recommending that the SAPS review its military culture or style, because the managers who attended the MMLP are unable to advise their seniors, respondents feel overwhelmed, powerless, and helpless and this leads to ineffectiveness in their performance. The requirements to attend the MMLP should be placed on record and should not be compromised to suit particular individuals. The MMLP should also be made a prerequisite for promotion as invaluable skills are transferred to course attendees. / Thesis (Master of Development and Management)--North-West University, Potchefstroom Campus, 2013

Rugby is a popular sport in South Africa, and has been played by young boys from as early as seven years old (South African Rugby Union [SARU], 2011). Despite various physical health benefits, it carries a high risk for injury, especially head injury, and consequently has a high incidence of concussion (Alexander, 2009; Laubscher, 2006; Shuttleworth-Edwards, Smith & Radloff, 2008). It is common for 12 to 13 per cent of adolescent rugby players to report mild traumatic brain injury or concussion per season (Laubscher, 2006; Shuttleworth-Edwards et al., 2008). The true incidence is however considered to be higher, even as high as 70.4% (Shuttleworth-Edwards et al., 2008). Concussion, otherwise known as mild traumatic brain injury (mTBI) is described as a traumatically induced alteration in mental status, or traumatically induced cerebral dysfunction (Kraus, McArthur, Silvermand & Jayaraman, 1996) which may, or may not involve loss of consciousness (Quality Standards Subcommittee, American Academy of Neurology [AAN], 1997). The nature of concussion has traditionally been considered to be transient, and symptoms are usually resolved within a few days or weeks (Kirkwood et al., 2008; Taylor et al., 2010). However, when concussions are not fully resolved prior to players returning to the game, they may be vulnerable to second impact syndrome. This syndrome causes herniation and brain oedema, which may result in death (Patel, 2005), as has been reported in South African press (Alexander, 2009; South African Press Association [SAPA], 2012). Even without second impact syndrome, repeated concussions may render the brain neurocognitively vulnerable, leading to an array of short- and long-term cognitive symptoms (Alexander, 2009; Shuttleworth-Edwards et al., 2008). Short-term problems include difficulties with attention, focus and concentration; following multi-step instruction, engaging in mental problem-solving; verbal expression, receiving and processing verbal and visual information; maintaining effective levels of mental and physical energy; controlling mood; suppressing impulsive behaviours; initiating and maintaining productive interpersonal relationships with peers; engaging in meaningful conversation and participating in group activities (Jantz & Coulter, 2007). Short-term cognitive impairments due to repeated concussion have also been found, and include amongst the former symptoms, also problems with delayed memory, learning, social functioning, and abstract thinking (Anderson, Brown, Newitt & Hoile, 2011; Laubscher, 2006). Long-term sequelae follow when children did not return to their baseline level of functioning after three months (Kirkwood et al., 2008; Taylor et al., 2010). Long-term sequelae include problems with memory, visuo-motor processing, executive functioning, learning and abstract thinking (Anderson, 2002; Anderson et al., 2010; Horton et al., 2010; Lezak et.al., 2004; Shuttleworth-Edwards & Radloff, 2008). As mTBI is traditionally thought to be of transient nature, researchers tend to investigate moderate to severe TBI, rather than mTBI (Alexander, 2009; Anderson et al., 2010; Patel, 2005). This could easily lead to important facts about mTBI being missed or not acknowledged. Nevertheless, recent investigations are uncovering facts about mTBI that could transform the way in which we understand mTBI, providing increasing evidence that mTBI is more serious than widely believed (Blakemore, 2012; Maxwell, 2011; Toleda et al., 2012). However, there remains a lack of research investigating mTBI from a single cause. Considering the above information, the current study provides unique information about mTBI. It specifically investigated the long-term effects of mTBI on adolescents from a homogenous cause, which makes results more comparable. The importance of this study is highlighted in the face of evidence for the long-term effects of multiple concussions, that were sustained during school rugby, on academic achievement (Alexander, 2009; Laubscher, 2006).In the light of grey areas in existing research, the aim of this current study was to investigate whether there is a significant difference in academic achievement within and between two groups of adolescents that had either played rugby and sustained multiple concussions, or had not played rugby nor sustained any concussions, when measured at four points in time over six years. A retrospective data-analysis was performed on matched, controlled, prospective longitudinal data, which was obtained from a study that evaluated the impact of repeated mTBI on the cognitive and academic functioning of early adolescent rugby players over time (Alexander, 2009). This study elaborates on a subset of the previous data, adding the gr. 12 results for academic aggregate scores, to the previously reported academic dataset. Participants were selected from Alexander‟s study (2009), and had either played rugby and obtained two or more concussions (Rugby/Concussed (RC- group); n=17), or did not play rugby nor sustained any concussions (Non-rugby/Non-concussed (NRC-group); n=13). Academic aggregate scores from baseline (gr. 7) through gr. 12 were analysed using quantitative statistical measures. A normal probability plot determined that the data was distributed normally. Descriptive statistics were reported, where after repeated measures ANOVA‟s were conducted to determine the statistical significance of differences in academic scores between and within the groups over time. These results indicated that the NRC-group displayed statistically significant increase in academic achievement over time (p = .000), whereas the RC-group did not display any significant differences, despite displaying a downwards trend in achievement. The difference between the two groups was measured at its highest in gr. 12 (p = .003), indicating that the NRC-group performed statistically significantly better than the RC-group over time. However, a Pearson‟s correlation test revealed that the estimated IQ (Vocabulary subscale of the WISC-III) (Wechsler, 1991) had a positive correlation on academic achievement [r(34) = .54, p < .05)]. To control for the effect that this correlation had on the academic results, an ANCOVA was conducted. This analysis indicated a statistically significant difference in academic achievement between the two groups in gr.12 (p = .004), with a large effect size (d = 1.41), implicating practical significance. Findings consequently confirmed our hypothesis. The significant increase in academic achievement observed within the NRC-group over time, is consistent with what could be expected if the brain is allowed to develop normally without disruption such as mTBI (Blakemore, 2012; Horton et al., 2010). The finding that the RC group did not display statistically significant intra-group differences in academic achievement when measured over time, but that academic achievement followed a downward trend, is difficult to substantiate in the literature. The few research studies on the effect of cumulative concussion on young athletes do not isolate academic achievement as a variable (Iverson et al., 2004; Shuttleworth-Edwards et al., 2008). Further research into intra-group differences in this specific area of enquiry and population group is therefore necessary. Normal cognitive and brain development, maintains that the brain develops in a posterior to anterior direction, and the prefrontal regions which are vulnerable to concussion, develop last (Anderson, 2010; Blakemore, 2012; Lezak, 2004). Whereas the primary motor and sensory areas and areas for receptive and expressive language are fully developed by the age of ten years, the prefrontal brain areas that are responsible for more complex and abstract thought repertoires only start maturing in early adolescence and this development continues up to the age of 24 and even into the early 30s (Toleda et al., 2012). Injury to the developing brain at this critical stage of maturation may adversely affect the development of cognitive skills, preventing the child from acquiring the effective cognitive strategies needed for normal academic functioning and adequate academic achievement after TBI (Horton et al., 2010). However, if there is no insult to the brain, cognitive functions are expected to develop normally as a result of synaptic pruning and increased white-matter volume in the prefrontal cortex (Blakemore, 2012), making it likely that the maturation of these abilities will lead to greater cognitive and academic ability (Blakemore & Choudhury, 2006), such as seen for the NRC-group in this study. Limitations for this study include a small sample size and the testing of only one variable. It is therefore recommended that future studies include more variables, and aim at creating a larger, randomized sample size, possibly providing a more representative pool of participants to study this phenomenon in South African context. It is also advised that future studies consider using neuropsychological measures to test cognitive functioning. As previous studies have indicated specific impairment in executive functioning after TBI, it may be worth researching the effect of concussion on executive functioning more thoroughly (Anderson, 2002; Anderson et al., 2010; Horton et al., 2010). Further it may be valuable to consider using functional MRI studies to broaden existing knowledge about the interaction between pathophysiology and cognitive functioning This study also highly recommends that schools and rugby clubs catering for child and adolescent players reconsider the importance of implementing proper return to play protocols after players obtain concussions. / Thesis (MA (Clinical Psychology))--North-West University, Potchefstroom Campus, 2013