An assessment procedure to measure the learning potential of mildly and moderately mentally handicapped adults was investigated in this study. The procedure was developed to overcome the limitations of previously established learning potential assessment procedures by meeting the specific orientation necessary when assessing the mentally handicapped, by avoiding practice and mechanical memory effects, and by requiring the subjects to show the ability to retain and apply new cognitive skills. Thirty institutionalized mentally handicapped adults were matched on IG and then randomly assigned to an assessment or control group. For the assessment group the intervention procedure involved the Coloured Progressive Matrices test as a pretest measure, in four treatment sessions each two to three days apart, and as a posttest measure. Verbal and/or figural aids were provided when an incorrect response was given on a test item during the treatment sessions. The control group was provided the same number of administrations of the test but without the treatment intervention. Significant differences were found between the pre and post test performance levels of the assessment group. The control group showed no significant gains. The learning potential assessment procedure used in this study provided a measure of the learning potential of mentally handicapped institutionalized adults.The results indicate that the mentally handicapped can perform at much higher levels than those assessed by standardly used intellectual measures. Implications are that through the use of this approach a clearer discrimination of intellectual ability within the broad classifications of the mentally handicappped can be gained. Such information could be used to aid in the selection of peers, developmental programming decisions, and provide prescriptive information about the most efficacious modes of learning for an individual.

Continuous change and competition in the working environment necessitate increased efficiency and productivity which require different and enhanced skills and abilities. It is therefore important that the right people with the right skills are selected and employees are developed to enable them to meet the organisational and national demands of the future. This dissertation investigates the relationship between learning potential, English language proficiency and work-related training test results to establish why some production employees perform better on work-related training test results than others. The results indicate that there is no significant relationship between the work-related training test results and either learning potential or English language proficiency. There is, however, a significant correlation between learning potential and English language proficiency. It might be worthwhile exploring the availability and adequacy of assessors as well as the motivational level of the production employees as factors that influence the progress made with work-related training test results. / Industrial and Organisational Psychology / MCOM (Industrial Psychology)

Continuous change and competition in the working environment necessitate increased efficiency and productivity which require different and enhanced skills and abilities. It is therefore important that the right people with the right skills are selected and employees are developed to enable them to meet the organisational and national demands of the future. This dissertation investigates the relationship between learning potential, English language proficiency and work-related training test results to establish why some production employees perform better on work-related training test results than others. The results indicate that there is no significant relationship between the work-related training test results and either learning potential or English language proficiency. There is, however, a significant correlation between learning potential and English language proficiency. It might be worthwhile exploring the availability and adequacy of assessors as well as the motivational level of the production employees as factors that influence the progress made with work-related training test results. / Industrial and Organisational Psychology / MCOM (Industrial Psychology)

Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2008.

Selection and selection procedures play a key role in the ability of organisations to compete successfully in the complex global and local environment. South Africa is experiencing a serious artisinal and technical skill shortage. Given the unemployment issues and the quest for people to fill the skill shortage gap it is important for organizations to find possible solutions to ensure that they stay competitive and effective in the labour market. Research suggests that at least 12 500 artisans need to be produced each year from 2006 to 2010 to meet the demand for skilled workers. To address above mentioned challenge organizations have to develop strategies to assist them to select individuals with the best chance to succeed in training. Unfortunately, the solution is not simple as organisations have a multitude of influences and pressures which affect their decisions regarding selection procedures. Selection of individuals is becoming an increasingly complex science as organisations have to select a capable and representative workforce. They must thus select candidates that are most likely to benefit from what is offered educationally, meet the requirements stipulated in South Africa's Labour legislation, and will perform most successfully in the specific trade. Bad practice can lead to costly litigation. The objectives of this mini-dissertation were to assess the empirical validity of the Technical Test Battery (TTB), as ability test and the Learning Potential Computerised Adaptive Test (LPCAT) as learning potential test as predictors of academic success of first year apprentice electrician students at a South African technical college serving a mining community. The study explored the current local employment issues that affect selection for training in the technical fields. The difference between the measurement of cognitive ability and learning potential were examined and the nature of the constructs of cognitive ability and that of learning potential were discussed. In the empirical study one of the objectives was to determine whether there was a relationship between the TTB and the LPCAT as two different predictors of the academic success of first yar apprentice electrician students. The difference in the empirical (predictive) validity of the two psychometric selection instruments, if only one of the tests as opposed to if both were used in combination, were examined. Another objective was to determine if there were any differences regarding the scores on the TTB and LPCAT of students from the designated group as opposed to that of students from non-designated groups. Finally this study explored whether the TTB and LPCAT were valid predictors to be used as selection instruments for apprentice electrician students in the South African context The research method consisted of a literature review and an empirical study. The empirical validity of the two predictor tests was validated in terms of the accuracy with which the selection instruments predicted the students' future performance. This research can be categorized as descriptive quantitative research. The TTB and LPCAT scores of a sample of 89 selected apprentice electricians were compared with the number of attempts they used to pass a phase test. Data was analysed by means of descriptive statistics. Pearsons Product Moment Correlation Coefficient, t-tests, ANOVAs as well as discriminant analysis were also used to reach the research objective. Statistically significant relationships were found between the predictor and criterion variables. The results confirm that the TTB and LPCAT are indeed empirical valid tests that can be used in the selection of apprentice electricians. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2008.

Selection and selection procedures play a key role in the ability of organisations to compete successfully in the complex global and local environment. South Africa is experiencing a serious artisinal and technical skill shortage. Given the unemployment issues and the quest for people to fill the skill shortage gap it is important for organizations to find possible solutions to ensure that they stay competitive and effective in the labour market. Research suggests that at least 12 500 artisans need to be produced each year from 2006 to 2010 to meet the demand for skilled workers. To address above mentioned challenge organizations have to develop strategies to assist them to select individuals with the best chance to succeed in training. Unfortunately, the solution is not simple as organisations have a multitude of influences and pressures which affect their decisions regarding selection procedures. Selection of individuals is becoming an increasingly complex science as organisations have to select a capable and representative workforce. They must thus select candidates that are most likely to benefit from what is offered educationally, meet the requirements stipulated in South Africa's Labour legislation, and will perform most successfully in the specific trade. Bad practice can lead to costly litigation. The objectives of this mini-dissertation were to assess the empirical validity of the Technical Test Battery (TTB), as ability test and the Learning Potential Computerised Adaptive Test (LPCAT) as learning potential test as predictors of academic success of first year apprentice electrician students at a South African technical college serving a mining community. The study explored the current local employment issues that affect selection for training in the technical fields. The difference between the measurement of cognitive ability and learning potential were examined and the nature of the constructs of cognitive ability and that of learning potential were discussed. In the empirical study one of the objectives was to determine whether there was a relationship between the TTB and the LPCAT as two different predictors of the academic success of first yar apprentice electrician students. The difference in the empirical (predictive) validity of the two psychometric selection instruments, if only one of the tests as opposed to if both were used in combination, were examined. Another objective was to determine if there were any differences regarding the scores on the TTB and LPCAT of students from the designated group as opposed to that of students from non-designated groups. Finally this study explored whether the TTB and LPCAT were valid predictors to be used as selection instruments for apprentice electrician students in the South African context The research method consisted of a literature review and an empirical study. The empirical validity of the two predictor tests was validated in terms of the accuracy with which the selection instruments predicted the students' future performance. This research can be categorized as descriptive quantitative research. The TTB and LPCAT scores of a sample of 89 selected apprentice electricians were compared with the number of attempts they used to pass a phase test. Data was analysed by means of descriptive statistics. Pearsons Product Moment Correlation Coefficient, t-tests, ANOVAs as well as discriminant analysis were also used to reach the research objective. Statistically significant relationships were found between the predictor and criterion variables. The results confirm that the TTB and LPCAT are indeed empirical valid tests that can be used in the selection of apprentice electricians. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2008.

Thesis (MComm)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: As a direct result of having segregated amenities and public services during the Apartheid era where Black individuals were provided with services inferior to those of White individuals, the country is currently challenged by serious and debilitating issues such as a skills shortage across most industry sectors, high unemployment and poverty rates, and inequality in terms of income distribution as well as in terms of racial representation in the workforce. The country is furthermore facing social problems such as high crime rates and high incidence of HIV/AIDS. A discussion is put forward that these challenges are the consequence of a larger problem. The larger problem being the fact that knowledge, skills and abilities are not uniformly distributed across all races. The situation is that in the past, and still now, White South Africans have greater access to skills development and educational opportunities. It is this fundamental cause that must be addressed to in order to create a sustainable solution to the challenges described above. It is therefore argued that a means to overcome the challenges the country faces as a result of Apartheid is through skills development – specifically affirmative action skills development. Affirmative action skills development will entail giving previously disadvantaged Black individuals access to skills development and educational opportunities as to equip them with the currently deficit skills, knowledge, and abilities. It is proposed that affirmative action skills development is one of the most effective mechanisms through which the aforementioned problems facing the country might be alleviated. A need was therefore identified for Industrial Psychology researchers to assist organisations to identify the individuals who would gain maximum benefit from such affirmative action skills development opportunities. To achieve this, an understanding is required of the factors that determine whether or not a learner will be successful if entered into an affirmative action skills development opportunity. Some studies have already been conducted regarding this need. One such study was conducted by de Goede (2007). The primary objective of this study consequently was to expand on De Goede’s (2007) learning potential structural model. Non-cognitive factors were added to the De Goede (2007) learning potential structural model in order to gain a deeper understanding of the complexity underlying learning and the determinants of learning performance. A subset of the hypothesised learning potential structural model was then empirically evaluated. The measurement model was found to have a good fit. However, the first analysis of the structural model failed to produce a good fit to the data. The analysis of the standardised residuals for the structural model suggested the addition of paths to the existing structural would probably improve the fit of the model. Modification indices calculated as part of the structural equation modeling pointed out specific additions to the existing model that would improve the fit. The model was subsequently modified by both adding additional paths. Furthermore, when considering the modification of an initially proposed structural model, the question should not only be whether any additional paths should be added, but should also include the question whether any of the existing paths should be removed. To this end the unstandardised beta and gamma matrices were examined and it pointed to insignificant paths that could be removed. The model was subsequently also modified by removing insignificant paths. The final revised structural model was found to fit the data well. All paths contained in the final model were empirically corroborated. The practical implications of the learning potential structural model on HR and organisations are discussed. Suggestions for future research are made by indicating how the model can be further elaborated. The limitations of the study are also discussed. / AFRIKAANSE OPSOMMING: ‘n Resultaat van Apartheid is dat Suid Afrika dringende uitdagings in die gesig staar soos byvoorbeeld lae vaardigheidsvlakke, hoë vlakke van werkloosheid en armoede, en ongelykheid in terme van inkomste en verteenwordiging in die werksmag. Suid Afrika het onder meer ook die uitdagings van hoë vlakke van misdaad en HIV/VIGS. Hierdie tesis stel voor dat die bogenoemde uitdagings simptome is van ‘n groter probleem, naamlik gebrekkige opleiding en ontwikkeling van vaardighede van Swart Suid Afrikaners. Dit is hierdie gebrek aan vaardighede wat aangespreek moet word om ‘n volhoubare oplossing tot die bogenoemde uitdagings te vind. Die argument word gestel dat ‘n oplossing gevind sal word in regstellende ontwikkeling. Regstellende ontwikkeling behels om voorheen benadeelde Swart Suid Afrikaners toegang te gee tot opleidings en ontwikkelingsgeleenthede. Dit word gestel dat regstellende ontwikkeling die meganisme is waardeur die land se uitdagings aangespreek moet word. ‘n Behoefte is dus geïdentifiseer vir Bedryfsielkundiges om navorsing te doen aangaande die eienskappe van studente wat sal bepaal of hulle suksesvol, al dan nie, sal wees tydens versnelde regstellende ontwikkeling. ‘n Soortgelyke studie is reeds onderneem deur de Goede (2007). Die primêre doelwit van hierdie studie was gevolglik om De Goede (2007) se leerpotensiaal-strukturele model uit te brei. Nie-kognitiewe faktore is tot De Goede (2007) se model toegegevoeg om ’n meer indringende begrip van die kompleksiteit onderliggend aan leer en die determinante van leerprestasie te verkry. ‘n Subversameling van die voorgestelde leerpotensiaal-strukturele model is vervolgens empiries geëvalueer. Dit is gevind dat die metingsmodel die data goed pas. Met die eerste analise van die strukturele model is goeie passing nie verkry nie. ‘n Ondersoek na die gestandardiseerde residue het getoon dat die toevoeging van addisionele bane tot die bestaande strukturele model waarskynlik die passing van die model sou verbeter. Modifikasie-indekse bereken as deel van die strukturele vergelykingsmodellering het spesifieke bane uitgewys wat die passing van die model sou verbeter indien dit bygevoeg word tot die bestaande model. Die strukturele model is dus aangepas deur addisionele bane by te voeg tot die bestaande model. Die strukturele model is ook aangepas deur bane te verwyder wat nie statisties beduidend was nie. Die bevinding was dat die hersiene model die data goed pas. Alle bane in die finale model is empiries bevestig.

Thesis (MComm)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: South Africa‟s social political past that was led by the Apartheid system has deprived the majority of South Africans of the opportunity to develop and accumulate human capital. As a result, this political system has left this country with a range of challenges including; a shortage of critical skills in the marketplace, high unemployment and poverty rates, inequality in terms of income distribution, unequal racial representation in the workplace, together with other social challenges such as high crime rates, extensive poverty, horrendous living conditions and a consequent increasing dependence on social grants (Van Heerden, 2013). These challenges prohibit this country from realising its global competitive potential. Organisations are primarily affected by these struggles faced by the country, and their continuous fight with these legacies of Apartheid is especially evident when they try to comply with the two responsibilities that form part of the personnel selection function. These include their responsibility to (1) employ the „best‟ employee for the job to result in the production of products and services of high economic utility, and (2) to act under moral, economic, political and legal pressure to diversify their workforce (Theron, 2009). Due to South Africa‟s past political system, the majority previously disadvantaged individuals have underdeveloped job competency potential which currently prohibits them from succeeding in the world of work. Consequently, if organisations try to comply with their first responsibility, the process of selecting the „best‟ employee results in adverse impact. If organisations comply with their second responsibility through traditional affirmative action measures, they allow incompetent employees to be appointed. The incompetence is not due to one race having fundamentally less competency potential then another. It is because South Africa‟s intellectual capital is not, and has not been uniformly developed and distributed across races (Burger, 2012). This current situation faced by organisations should be dealt with for three important reasons. Firstly, a solution could improve the global competitiveness of this country. Secondly, a solution could contribute to solving the social challenges faced by this country, and lastly, not only because the situation could possible become precarious, but simple because it is the right thing to do. It is not implied that affirmative action should be abolished. This study rather suggests that the interpretation of affirmative action should change and the focus of this corrective policy should shift to a more developmental approach. This entails that more emphasis should be placed on providing the previously disadvantaged with the necessary training and development to foster the needed competency potential to succeed in the world of work. However, resources for these developmental opportunities are scarce, and as a result, a need exist to identify a method that could identify individuals who will gain maximum benefit from these suggested affirmative development opportunities. Consequently, a need exist to identify individuals who display the highest potential to learn and to create the conditions conducive for learners with high learning potential to actualise that potential. In order to successfully identify the individuals who display a high level of learning potential and to create the person- and environmental characteristics that have to be present to facilitate successful learning, the learning potential construct must be understood. De Goede (2007), Burger (2012), and Van Heerden (2013) have completed research studies on this specific construct, and to assist in the understanding of the complexity of this construct, it made more empirical sense to build on existing structural models. This should result in the production of a more complete understanding of learning and the determinants of learning performance. The objective of this study was therefore to modify and elaborate the Burger (2012) learning potential structural model by expanding the model with the inclusion of additional non-cognitive variables. The proposed hypothesised learning potential structural model was empirically evaluated. The measurement model achieved good close fit. However, the first analysis of the structural model only obtained reasonable model fit. After the consideration of the full range of fit indices, standardised residuals, modification indices and parameter estimates, a few modifications were made to the model. The final revised structural model achieved good fit. All of the paths in the final model were empirically corroborated. The limitations of the research methodology, the practical implications of this study, and recommendations for future research are also discussed. / AFRIKAANSE OPSOMMING: Suid-Afrika se verlede wat gelei was deur die Apartheidsisteem, het die meeste Suid-Afrikaners die geleentheid om toegang tot ontwikkelingsgeleenthede ontneem. Dit het gelei tot die onderontwikkeling van meeste Suid-Afrikaners se bevoegdheidspotensiaal wat hulle moet help om die eise wat tans in die wêreld van werk aan hul gestel word suksesvol te hanteer. Dié politieke sisteem het veroorsaak dat Suid-Afrika „n reeks probleme ervaar, insluitende; „n tekort aan kritieke vaardighede in die mark, baie hoë werkloosheid en armoede, ongelykheid in terme van inkomste-verdeling en ongelyke rasverteenwoordiging in die werksplek, asook oormatige misdaad, afskuwelike leefsomstandighede vir meeste Suid-Afrikaners, en „n toenemende afhanklikheid van maatskaplike toelaes (Van Heerden, 2013). Hierdie uitdagings verhoed dat Suid-Afrika sy globale mededingendheidspotentiaal realiseer. Organisasies word direk deur hierdie uitdagings beïnvloed, en hulle deurlopende worsteling met hierdie nalatenskap van Apartheid is veral duidelik wanneer hulle probeer voldoen aan twee vereistes wat personeelkeuring stel. Hierdie sluit in (1) om die mees bevoegde werknemers aan te stel wat produkte/dienste van hoë kwaliteit en hoë ekonomiese nut verseker, en (2) om die werksplek onder morele, ekonomiese, politieke en wetlike druk te diversifiseer (Theron, 2009). As gevolg van Suid-Afrika se Apartheidsisteem, het die meeste indiwidue onderontwikkelde werksbevoegdheidspotensiaal wat hulle verhoed om suksesvol te wees in hulle aanstellings. Die gevolg daarvan is dat, sodra organisasies poog om aan die eerste verantwoordelikheid van personeelkeuring te voldoen dan lei die keuring tot nadelige impak. As organisasies aan die ander kant poog om aan die tweede verantwoordelikheid te voldoen deur die implimentering van tradisionele regstellende aksie, dan laat hulle onbevoegde indiwidue toe om in „n pos in te tree. Hierdie onbevoegdheid is nie die gevolg van „n fundamentele verskil in bevoegdheidspotensiaal tussen rassegroepe nie. Dit is die gevolg van die feit dat Suid-Afrika se intellektuele potentiaal nie eweredig tussen rasse ontwikkel is nie (Burger, 2012). Die huidige situasie waarin organisasies hul bevind moet op gelos word om drie belangrike redes. „n Oplossing kan eerstens die globale mededigendheid van die land verbeter. „n Oplossing kan tweedens die druk van die geïdentifiseerde sosiale uitdagings verlig, en laastens, „n oplossing is nodig nie net omdat ons huidige situasie moontlik haglik kan word nie, maar eenvoudig omdat dit die regte ding is om te doen. Daar word glad nie geïmpliseer dat regstellende aksie tot niet gemaak moet word nie. Hierdie studie stel slegs voor dat die interpretasie van regstellende aksie asook die fokus daarvan „n meer ontwikkelings-benadering moet aaneem. Dit behels dat „n groter klem daarop geplaas moet word om lede van voorheen benadeelde groepe die geleenthede te gee om die nodige bevoegdheidspotensiaal te ontwikkel om suksesvol in the werksplek te wees. Hulpbronne vir hierdie ontwikkelingsgeleenthede is egter beperk. Die behoefte bestaan dus om daardie indiwidue te identifieer wat die grootste voordeel hieruit sal trek. Daarom is dit nodig om eerstens indiwidue wat die hoogste vlak van leerpotensiaal het te identifiseer, en tweedens om die omstandighede/kondisies te skep wat hierdie leerpotensiaal sal laat aktualiseer. Om uiteindelik sulke indiwidue te identifiseer asook om die persoon- en omgewingstoestande te skep wat as voorvereistes vir suksesvolle leer geld, moet die leerpotensiaalkonstruk verstaan word. Leerpotensiaalnavorsings-studies deur De Goede (2007), Burger (2012), en Van Heerden (2013) is reeds voltooi, maar om die kompleksiteit van hierdie konstruk ten volle te verstaan moet opeenvolgende studies onderneem word. Hierdie studie het gevolglik gefokus op die uitbreiding van hierdie bestaande modelle om sodoende „n meer volledige begrip van leerprestasie te ontwikkel. Die doel van hierdie studie was daarom om die bestaande Burger (2012) leerpotensiaal strukturele model te wysig en uit te brei deur die toevoeging van addisionele nie-kognitiewe veranderlikes. Die strukturele model was empiries ge-ëvalueer en die metingsmodel het „n goeie passing getoon. Die strukturele model het aanvanklik slegs „n redelike passing bereik, maar na die oorweging van die volle spektrum pasgehaltemaatstawwe, gestandaardiseerde residue, modifikasie-indekse and parameterskattings is „n aantal wysigings aan die model aangebring. Die finaal-gewysigde strukturele model het goed gepas. Al die bane in die finale model is empiries bevestig. Die beperkinge van die navorsingsmetodiek, die praktiese implikasies van die studie en aanbevelinge vir toekomstige navorsing was ook bespreek.

This study investigated the effectiveness of Feuerstein’s mediated intervention programme on a sample of the Grade Five population, in a remedial school. The participants (n=20) were systematically sampled and they constituted two groups, namely, Individual Mediation (n=10) and Group Mediation (n=10). It was hypothesised that participants exposed to this programme would yield significant improvement in cognitive functioning as measured by the (Raven’s Coloured Progressive Matrices (RCPM). As a result of the intensity and the duration of the mediation that was provided to the participants within the Individual Mediation, it was hypothesised that they would perform significantly better than those within the Group Mediation. Set Variations B-8 to B-12 from Feuerstein’s Learning Potential Assessment Device served as vehicle for mediating cognitive deficiencies. Following the intervention, a significant improvement on the RCPM was only obtained within the Individual Mediation. Although there was significant improvement, no significant difference was found between the Individual Mediation and the Group Mediation. The pre-post-test results of the Individual Mediation corroborate existing literature that provision of adequate and appropriate mediated learning experience is effective in improving cognitive functioning. However, non-significant results between the two groups suggest that a pre-post significant finding within the Individual Mediation was as an effect of pre-test differences. These findings are therefore inconclusive. It might be helpful to further replicate this investigation in order to determine whether support is found for the previous or for the present findings.

Les Troubles Spécifiques du Langage (TSL) sont une pathologie développementale caractérisée par une grande hétérogénéité (Leonard, 2009). Malgré les progrès déjà effectués dans la compréhension de sa nature, ses causes et ses séquelles, à ce jour, un nombre important de questions reste à étudier. Au niveau théorique, les études réalisées s’inscrivent dans le cadre théorique de l’hypothèse phonologique et de l’approche psycholinguistique qui illustre la causalité réciproque entre les troubles phonologiques et l’apprentissage de l’écrit. C’est à partir de ces considérations théoriques que nous avons proposé une problématique essayant de rendre compte de l’hétérogénéité de cette population. Les différents travaux réalisés dans le cadre de cette thèse ont tenté, à l’aide d’une approche méthodologique variée, d’étudier les caractéristiques langagières et cognitives d’enfants TSL francophones, les capacités à apprendre lors d’une tâche de détection d’intrus et la spécificité des troubles en mémoire de travail (étude des capacités en mémoire visuospatiale) des enfants avec Troubles non Spécifiques du Langage (TnSL) ainsi que les effets bidirectionnels entre l’apprentissage de l’écrit et les déficits en langage oral (enfants TSL, TnSL et TSL-résolus). Les résultats ont montré les difficultés importantes en mémoire de travail (MdT) phonologique chez les enfants TSL indépendamment de leur profil langagier spécifique et un retard développemental dans les capacités à apprendre et dans la mémoire visuospatiale chez les enfants TnSL. Enfin, nous avons montré que la sévérité et la persistance des troubles langagiers, les capacités non verbales et les capacités en MdT phonologique se reflètent dans les performances en lecture-écriture et permettent la différenciation d’enfants diagnostiqués TSL par rapport à l’apprentissage ultérieur de l’écrit. Nos résultats contribuent à une meilleure appréhension des enfants TSL francophones. / Specific Language Impairment (SLI) is a complex developmental condition characterized by significant heterogeneity (Leonard, 2009). The past three decades a great deal has been learned about children with SLI, yet numerous questions still need to be answered regarding its nature, its causes and its repercussions. The theoretical background of our studies is formed by the theory of a phonological deficit and the psycholinguistic approach, illustrating the reciprocal causality between phonological deficits and literacy acquisition. The present work tried to capture the heterogeneity of children with SLI. Using different methodological approaches, the aim of our studies was to investigate the linguistic and cognitive profiles of children with SLI, the learning potential during an implicit task and the specificity of working memory deficits in children with Nonspecific Language Impairments (NLI) and the bidirectional effects between literacy development and language impairments (SLI, NLI and resolved-SLI). The results showed marked deficits in phonological working memory (MdT) in the children with SLI independently of their specific linguistic profile and a developmental delay in learning potential and in Visuospatial WM in children with NLI. Lastly, we showed that the severity and the persistence of the language impairment, the nonverbal skills and the phonological WM skills are reflected in the literacy outcomes of children with language impairments, allowing their differentiation in this aspect. Our results contribute to a better understanding of SLI in French-speaking children.