The purpose of the study is to investigate the relationships among personality factors and life satisfaction in high school students. High school students ( N = 625) completed self-report measures of personality characteristics (namely, extraversion, neuroticism, openness, conscientiousness, and agreeableness) and global life satisfaction. Results include the specific contribution of each of these personality dimensions as they relate to life satisfaction, gender differences, and the role of perceived classmate support in relationships between personality factors and life satisfaction. Specifically, findings revealed that about 45% of the variance in adolescents‟ life satisfaction scores was accounted for by their self-reported measures of personality factors. Neuroticism emerged as the strongest predictor of life satisfaction. Further, results demonstrated that openness, conscientiousness, and extraversion were significant and unique predictors of life satisfaction. Gender differences were found in the link between agreeableness and life satisfaction such that a higher level of agreeableness was related to higher life satisfaction for girls, but not for boys. Finally, results of the structural equation model that analyzed the role of perceived classmate support in the link between personality factors and life satisfaction revealed significant paths between four personality factors (excluding openness) and perceived classmate support. Further, the path from extraversion to perceived classmate support showed the strongest standardized path coefficient (.42); suggesting that a higher score on extraversion was associated with a higher level of perceived classmate support which, in turn, predicted higher levels of life satisfaction. Neuroticism demonstrated the strongest, albeit inverse, direct path to life satisfaction, further supporting the finding that higher levels of neuroticism were related to lower levels of life satisfaction. Findings provide school psychologists with a better understanding of the demographic (i.e., gender), stable (i.e., personality) and interpersonal characteristics (i.e., perceptions of classmate support) that place students at-risk for negative outcomes via low life satisfaction or, conversely, facilitate optimal wellness via high life satisfaction.

The National Institute of Mental Health’s (NIMH) Research Domain Criteria (RDoC; Insel et al., 2010; Sanislow et al., 2010) were established in an effort to explore underlying dimensions that cut across many existing disorders as well as to provide an alternative to the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders (DSM-5; APA, 2013). The present dissertation aimed to study one major component of the RDoC model, negative valence, as compared to other models hypothesized to be closely related, as well as its relationship to a key component of psychopathology, affective instability. Participants were adult community residents (N=90) currently in mental health treatment. Participants received self-report measures of RDoC negative valence, five-factor model (FFM) neuroticism, and DSM-5 Section 3 negative affectivity, along with measures of affective instability, borderline personality disorder, and social-occupational impairment. Through this investigation, a better understanding and potential expansion of this new model of diagnosis for clinicians and researchers is provided. In particular, it is suggested that RDoC negative valence is commensurate with FFM neuroticism and DSM-5 negative affectivity, and it would be beneficial if it was expanded to include affective instability.

There is relatively little research based on the Big Five personality dimensions and job satisfaction and the relationship thereof. Job satisfaction of employees is a good indication of organisational effectiveness and is influenced by organisational and dispositional factors. The fundamental nature of the dispositional approach is that individuals have stable traits that significantly influence their affective and behavioural reactions to organisational settings. Job satisfaction can be considered a general feeling of well-being experienced by any employee about the work he or she does or as a related collection of attitudes about various aspects of the job. Employees, who perform at higher levels, will most likely make a greater contribution in the organisation. These individual's are more likely to achieve greater status; thus the importance of having satisfied employees in any organisation. The general objective of this study was to determine the relationship between personality dimensions and job satisfaction of engineers in a petro-chemical organisation. A cross-sectional survey design was used in the empirical study. The sample consisted of 89 junior to middle level engineers within a petro-chemical organisation. The Minnesota Job Satisfaction Questionnaire (MSQ) and the Personality Characteristics Inventory (PCI) were administered. Descriptive statistics were used to analyse the data. Cronbach alpha coefficients, inter-item correlation coefficients and confirmatory factor analysis were used to assess the reliability and validity of the measuring instruments. Pearson and Spearman correlation coefficients were used to specify the relationships between the variables. Multiple regression analysis was used to determine which personality dimensions were the best predictors of job satisfaction. The current research found that employees who are more stable and introverted tend to be more satisfied with achievement, independence as well as human and technical supervision at the work place. It was also established that extraverted and sociable individuals in the organization are less satisfied with human supervision. The findings of this research showed that some personality dimensions are related to aspects of job satisfaction However, overall personality dimensions explained relatively small percentages in the variance of job satisfaction. Because of this, the situational frame of reference, which is most common at present within the workplace, as well as the frame of reference that most supports this research, job satisfaction/dissatisfaction, is alleged to result from the nature of the job or h m the conditions at work. This basically epitomizes the effects of situational forces on workers' job attitudes. The results showed that subscales predicted job satisfaction to a greater extent than personality dimensions. Recommendations for future research were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2004.

Earlier quantitative entrepreneurial studies with a focus on poverty rate has centred their arguments and analyses entirely on income differences which has resulted in a high poverty rate among self-employed. Their results shows that variables such as age, gender, hours of labour and structure of the household significantly affect the poverty rate among self-employed. In this study we aim the focus on material living standards instead of income differences, thus using a more representative approach while studying entrepreneurial poverty. The purpose of the study was to examine how personality traits (big five) affect the material living standards among the self-employed in Sweden, using a group of employed as a control group. Variables earlier known to affect the poverty risk among self-employed where used as control variables together with education and household income. With this new aspect on entrepreneurial research, we found that four out of five personality traits affect the material living standard among self-employed. Two out of the five personality traits, openness and extraversion, where found uniquely on self-employed. Among the control variables only gender and household income seemed to affect the material living standard, thus excluding the effect of age, hours of labour, education and household structure. This indicates that personality traits should be considered using while studying poverty among the self-employed.

The ability to control one’s behaviour is a fundamental cognitive function subserved by the prefrontal cortex (PFC). Whereas the neural basis of inhibitory control is reasonably well-established, the possible influence of individual differences in personality on cortical activity associated with this ability remains largely unexplored. The present study obtained self-report ratings of Five-Factor Model personality traits from 42 healthy adults while hemodynamic oxygenation in the PFC was recorded during a Go/No-Go task. Results indicated that Neuroticism, Agreeableness and Openness to Experience were associated with attenuated activity in the lateral PFC, a region critical for emotion regulation and behavioural control, whereas Extraversion and Conscientiousness were associated with greater activation in these regions. Activity within the medial PFC, an area linked to task engagement and self-monitoring, shared a positive association with Agreeableness. These findings provide important insights into how neural systems supporting inhibitory control may be affected by individual differences in personality.

The ability to control one’s behaviour is a fundamental cognitive function subserved by the prefrontal cortex (PFC). Whereas the neural basis of inhibitory control is reasonably well-established, the possible influence of individual differences in personality on cortical activity associated with this ability remains largely unexplored. The present study obtained self-report ratings of Five-Factor Model personality traits from 42 healthy adults while hemodynamic oxygenation in the PFC was recorded during a Go/No-Go task. Results indicated that Neuroticism, Agreeableness and Openness to Experience were associated with attenuated activity in the lateral PFC, a region critical for emotion regulation and behavioural control, whereas Extraversion and Conscientiousness were associated with greater activation in these regions. Activity within the medial PFC, an area linked to task engagement and self-monitoring, shared a positive association with Agreeableness. These findings provide important insights into how neural systems supporting inhibitory control may be affected by individual differences in personality.

Very little research has examined the role of personality in important life outcomes and support needs of adults with intellectual disabilities. This exploratory study includes a sample of 102 community-dwelling adults with intellectual and developmental disabilities, and begins to evaluate the relative contributions of general personality and personality disorder as it they concern their adaptive functioning, Axis I psychopathology symptoms, and residential and vocational supports. Observer ratings of personality disorder and Five Factor Model and Reiss Profile general personality functioning were obtained from direct service providers who knew the participants well, and archival file data (e.g., IQ, adaptive functioning scores, medications prescribed, and diagnoses) were collected after informed consent and assent were obtained from the participants. The results suggest that both personality and personality disorder, relate the intensity of supports required, the number of psychiatric medications prescribed, maladaptive behavior, and the amount of Axis I psychopathology exhibited by the participants. Results of the study are discussed with reference to implications for service delivery and planning and future research.

The current study provides convergent, discriminant, and incremental validity data for a measure of schizotypia from the perspective of the Five-Factor Model (FFM) of general personality structure. Nine schizotypia facet scales were constructed as maladaptive variants of respective facets of the FFM (e.g., Aberrant Ideas as a maladaptive variant of FFM Openness to Ideas). On the basis of data from 143 undergraduates the convergent validity of these nine facet scales was tested with respect to 11 established measures of schizotypia and the respective facets of the FFM. Discriminant validity was tested with respect to other personality disorders and facets from other FFM domains. Incremental validity was tested with respect to the ability of the FFM schizotypia facet scales to account for variance in two established measures of schizotypia, after variance accounted for by respective FFM facets and other established measures of schizotypia were first removed. The findings support the validity of these new facet scales as measures of schizotypia and as maladaptive variants of the FFM.

The current thesis tests empirically the relationship of the dimensional trait model proposed for the fifth edition of the American Psychiatric Association’s (APA) Diagnostic and Statistical Manual of Mental Disorders with five-factor models (FFM) of personality disorder (PD). The DSM-5 Personality and Personality Disorders Work Group proposes to diagnose the disorders largely in terms of a 25 trait dimensional model organized within five broad domains (i.e., negative affectivity, detachment, antagonism, disinhibition, and psychoticism). Consistent with the authors of DSM-5, it was predicted that negative affectivity would align with FFM neuroticism, detachment with FFM introversion, antagonism with FFM antagonism, disinhibition with low FFM conscientiousness and, contrary to the authors of DSM-5, psychoticism would align with FFM openness. Suggested changes in trait placements according to FFM of PD research were also tested. Four measures of five factor models of general personality were administered to 445 undergraduates along with the Personality Inventory for DSM-5. The results of the present study provided support for the hypothesis that all five domains of the DSM-5 dimensional trait model are maladaptive variants of general personality structure, including the domain of psychoticism; however, the findings provided mixed support for suggested trait placement changes in the DSM-5 model.

The Five Factor Obsessive Compulsive Inventory (FFOCI) was developed in part to facilitate a shift from the categorical classification of personality disorder to a dimensional model; more specifically, the five-factor model. Questions though have been raised as to whether obsessive-compulsive personality disorder can be understood as a maladaptive variant of FFM conscientiousness. The purpose of the present study was to provide a further validation of the FFOCI, as well as to compare and contrast alternative measures and models of OCPD. A total of 380 participants, including 146 oversampled for OCPD traits, were recruited from introductory psychology courses at the University of Kentucky. Administered were the FFOCI, measures of general personality (e.g.,, International Item Pool, 5-Dimensional Personality Test), trait scales associated with OCPD (e.g.,, workaholism, compulsivity, propriety), and alternative measures of obsessive compulsive personality disorder. All measures were administered via SurveyMonkey, a secure online survey service. Results supported the validity of the FFOCI, but also demonstrated substantive differences among the alternative measures of OCPD, particularly with respect to their relationship with FFM conscientiousness, antagonism, and introversion.