Factor structure of the basic personality inventory with incarcerated offenders

The item and scale factor structure of the Basic Personality Inventory (BPI) was examined in a sample of 486 offenders incarcerated for violent and sexual crimes. Separate principal-component analyses of the items for each of the 11 clinical scales, critical item scale, and social desirability scale indicated a one-dimensional factor solution for all scales except Depression and Persecutory Ideation. The Depression scale's two factors were Hopelessness and Depressive Affect and the Persecutory Ideation scale's two factors were General Paranoia and Perception of External Control. Although the factors for these two scales may assist in interpretation, the correlations between the factors and the total score of their respective scale were high. Confirmatory factor analysis of the 220 items from the 11 clinical scales supported the factorial logic of the scoring key. Analysis of the 11 clinical scales resulted in two factors: General Psychopathology/Adjustment and Antisocial Orientation. The results suggest that all but two scales can be viewed as unidimensional thereby allowing for a straightforward clinical interpretation. These analyses support the internal structure of the BPI and lend credence to external validity work with forensic populations.     

Factor structure of the MCMI basic personality scales and common-item artifact

The eight basic personality scales of the Millon Clinical Multiaxial Inventory (MCMI) were derived from Millon's theory of personality, but the adequacy of the MCMI for measuring Millon's personality constructs has never been assessed. One major problem with using factor analysis to illuminate the structure of the MCMI personality scales is that artifactual structure may result from item overlap among the scales. To analyze this, item-overlap coefficients were factored and compared to the factor structures of five subject samples. For the eight basic personality scales, three factors emerged for the overlap matrix and each of the five sample matrices: Aloof-Social, Aggressive-Submissive, and Lability-Restraint. It was concluded that these three factors are inconsistent with Millon's theory and that they will be found artifactually across a wide variety of populations due to overlapping items.     

Factor analysis and personality theory

This article deals with the factor analytic approach to personality. More specifically, it deals with problems in factor analyses of personality questionnaires which contribute to factorial confusion. It is stated that in fact the factorial results make better sense than is usually admitted. The apparent disparity of results can be accounted for by technical defects in the chosen factor analytic method. Furthermore, it is shown that another source of disagreement lies in the interpretation of what are essentially the same factors.     

Factor structure of the psychopathic personality inventory: validity and implications for clinical assessment

Psychopathy is a personality disorder characterized by impulsive antisocial deviance in the context of emotional and interpersonal detachment. A factor analysis of the subscales of the Psychopathic Personality Inventory (PPI) yielded evidence for 2 factors. One factor showed relations with external criteria mirroring those of the emotional-interpersonal facet of psychopathy, including high dominance, low anxiety, and venturesomeness. The other factor showed relations paralleling those of the social deviance facet of psychopathy, including positive correlations with antisocial behavior and substance abuse, negative correlations with socioeconomic status and verbal ability, and personality characteristics including high negative emotionally and low behavioral constraint. Findings support using the PPI to assess these facets of psychopathy in community samples and to explore their behavioral correlates and genetic-neurobiological underpinnings.     

Factor structure and measurement invariance of a short measure of the Big Five personality traits

The main purpose of this study is to assess the factor structure and the measurement invariance of the Mini-International Personality Item Pool (Mini-IPIP; Donnellan, Oswald, Baird, & Lucas, 2006). The Mini-IPIP is a brief instrument evaluating personality traits according to the Big Five models. Two samples were collected comprising nearly 800 participants. Confirmatory factor analyzes revealed a five-factor solution consistent with the Big Five model. Measurement invariance analyses showed that the Mini-IPIP was reasonably invariant across samples, genders and age groups. Overall, results pointed to a satisfactory factorial structure and an adequate invariance of the measure.     

Factor structure of items from the personality Adjective Check List in a sample of normal adolescents

We present the results of a principal-components analysis of the Personality Adjective Check List (PACL) at the item level, rather than at the scale level. The PACL was constructed by Strack (1987) to evaluate the personality scales proposed by Millon (1981). Data were obtained from a sample of normal adolescents. A scree test was applied to determine the number of factors to be extracted, and the retained factors were then rotated using a varimax procedure. Using the data from this second analysis, congruence coefficients were calculated by correlating the factor weights from the two analyses of men and women. Results reveal the existence in the whole sample of five unipolar personality factors, which we have called: Aggressive, Conscientious, Inhibited, Impulsive and Gregarious. These are not similar to those obtained from a sample of normal adults.     

Psychodiagnosis of personality structure: psychotic personality organization.

Recent developments in Rorschach psychology, including nomothetic approaches focused on scores, ratios, and indices and idiographic approaches focused on content emerging from psychoanalytic theory, offer the Rorschach clinician a rich and potent interpretive methodology. This article examines the structural diagnosis of personality organization with a focus on psychotic personality structure. Rorschach approaches to the differential diagnosis of psychotic personality organization are presented. The Rorschach is viewed as indispensible in the differential diagnosis of personality organization, especially in the so-called "borderline" cases.     

Factor analytic approaches to personality item-level data

Factor analysis models have played a central role in formulating conceptual models in personality and personality assessment, as well as in empirical examinations of personality measurement instruments. Yet, the use of item-level data presents special problems for factor analysis, applications. In this article, we review recent developments in factor analysis that are appropriate for the type of item-level data often collected in personality. Included in this review are discussions of how these developments have been addressed in the context of two different (but formally related) statistical models item response theory (IRT: Hambleton, Swaminathan, & Rogers, 1991) and structural, equation modeling (Bollen 1989) for item-level data. We also discuss the relevance of item scaling in the context of these models. Using the restandardization data for the Minnesota Multiphasic Personality Inventory-2 Scale (cf. Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989), we show brief examples of the utility of these approaches to address basic questions about responses to personality scale items regarding: (a) scale, dimensionality and general item properties, (b) the "appropriateness" of the observed responses, and (c) differential item functioning across subsamples. implications for analyses of personality item-level data in the IRT and factor analytic traditions are discussed.     

Suicidal behaviors and personality structure

In this paper we suggest the potential clinical usefulness of two projective tests (Rorschach and Object Relation Technique) and of a clinical interview focused on the pathway to suicide, life events, and major life difficulties to better define subtypes of patients attempting suicide. Thirty-three hospitalized subjects who had attempted suicide in the previous 6 months were examined using an in-depth assessment of the pathway to suicide. The aims of this study were: (1) to compare, within a clinical sample of suicidal attempters, the psychopathological, personality, and psychosocial characteristics of subjects with mood disorders alone, personality disorders and dysfunctional personality alone, and mood disorders with personality disorders and/or dysfunctional personality; and (2) to analyze the relationship between the method chosen and the clinical characteristics of the subgroups.     

A conceptual dismantling of the Five Factor Form: Lexical support for the bipolarity of maladaptive personality structure

The Five Factor Form (FFF) assesses adaptive and maladaptive variants for both poles of the five-factor model (FFM), consistent with the hypothesis that there are indeed maladaptive variants for all 10 poles of the FFM. The current study dismantled the 30 FFF items. It was hypothesized that for each FFF item, the two maladaptive and adaptive components occupying the same side would be rated as similar in meaning, whereas components occupying opposite sides would be dissimilar (opposite) in meaning. The results supported the FFF scoring for four domains with mixed support for openness. The findings support not only the validity of the FFF but as well the perspective that there are maladaptive variants of all ten poles of the FFM.     

On the biological determination of personality structure

The controversy surrounding two particular problems has stymied the development of a consensus view concerning the structure of personality. First, there has been disagreement concerning the ‘independence’ of introversion-extraversion and measures of neuroticism. The other problem concerns the ‘duality’ of introversion-extraversion and whether it is even useful to retain this concept when it may only represent a ‘shotgun wedding’ of ‘sociability’ and ‘impulsivity’. Recent findings are discussed which relate to the neurophysiological underpinnings of personality. It is suggested that these findings, and the associated model, lie outside the circulus vitiosus of factor analysis and therefore that they provide a basis for resolving the independence and duality issues. It is argued that the tendency for introversion-extraversion to correlate with neuroticism only reflects a degree of coincidence and not equivalence. The psychological coincidence is conceived as resulting from the anatomical linkage of different neurophysiological subsystems which provide the substrata for the two personality dimensions. It is also argued that the ‘sociability’ and ‘impulsivity’ duality relates to distinct ‘sensitivity’ and ‘synergistic’ aspects of thalamocortical arousability. These distinct arousability dimensions nevertheless both contribute to the effectiveness of descending inhibitory projections that act on the brain-stem reticular formation and hence determine introversion-extraversion differences. In this scheme of things the three psychological dimensions are different but again there are anatomical linkage correlations reflecting coincidence rather than equivalence.     

Towards a refined structure of personality traits

In this article we pursue two goals. The first is a further articulation of the dimensionality of the Dutch trait domain. The second is a detailed mapping of the factorial trait structure, one which includes intelligible and proper niches for various nuances of the trait language and for different interpretations of the main factors of personality language. In realizing these goals, we discuss the reliance on theory in structuring and modelling the domain in question, the type of model to be used, and the comprehensiveness versus the economy of domain representation. The advantages and disadvantages of the simple structure model and the circumplex model are commented upon, and a new framework that integrates these two models is presented. The present results provide confirmation of the existence of five major dimensions that cover the trait domain: (I) Extraversion or Surgency, (II) Agreeableness, (III) Conscientiousness, (IV) Emotional Stability, and (V) Intellect or Openness to Experience. The newly developed representational model, revealing a refined structure of personality characteristics, not only clarifies some of the problems faced in interpreting the Big Five factors, but also forms a starting point for applications.     

Reproductive behavior and personality traits of the Five Factor Model

We examined associations between Five Factor Model personality traits and various outcomes of reproductive behavior in a sample of 15 729 women and men from the Wisconsin Longitudinal Study (WLS) and Midlife Development in the United States (MIDUS) survey. Personality and reproductive history was self‐reported in adulthood (mean age: 53 years). High extraversion, high openness to experience, and low neuroticism were associated with larger number of children in both sexes, while high agreeableness and low conscientiousness correlated with larger offspring number in women only. These associations were independent of marital status. There were also more specific associations between personality and timing of childbearing. The findings demonstrate that personality traits of the Five Factor Model are systematically associated with multiple reproductive outcomes. Copyright © 2011 John Wiley & Sons, Ltd.