Factor structure of the self-construal scale in a Vietnamese-American adolescent sample

This study investigated the factor structure of the Self-construal Scale, an important measure of interdependent and independent self-construal. An exploratory factor analysis with the principal component method and varimax rotation supported Singelis' original two-factor model (1994) for a sample of 152 Vietnamese-American high school adolescents recruited from Little Saigon in Orange County, California. Implications for the conceptualization of self-construal and issues in research are discussed.     

Factor structure of the perfectionistic self-presentation scale in Korea

This study explored the factor structure of the Korean version of the Perfectionistic Self-Presentation Scale, originally developed by Hewitt and colleagues in 2003 with three factors (Perfectionistic Self-promotion, Non-display of Imperfection, and Non-disclosure of Imperfection). In Study 1, a confirmatory factor analysis was performed on the Korean version with 27 items for 151 Korean college students, but the model fit was poor. Subsequently, an exploratory factor analysis was conducted, and the results yielded three factors as found in Hewitt, et al., yet with 20 items rather than the original 27 items. This new version had good internal consistency (Cronbach's alpha =.88); convergent validity estimate was established with a measure of self-presentation motivation. In Study 2, to support the structural validity of the Korean version, another confirmatory factor analysis was conducted with 203 Korean college students. The model fit was good, but a few amendments were made.     

Factor structure and construct validity of the Vando reducer-augmenter scale

Factor analysis of 262 college students' responses to Vando's (1970, 1974) Reducer-Augmenter Scale (RAS) yielded three factors interpreted as Musical Reducing-Augmenting, General Lifestyle Reducing-Augmenting and Physical Thrill Seeking. Responses by 175 other students and by 238 male correctional inmates showed very similar solutions on target rotation. Subscale scores based on the three factors were correlated against the Eysenck Personality Inventory, the Sensation Seeking Scale, the Novelty-experiencing Scale, the Arousal-Seeking-Tendency Scale, hours of sleep, absolute auditory threshold and personally set volume for listening to stereo music. Some major findings were as follows: (1) The General Lifestyle subscale correlates substantially with measures of arousal and sensation seeking; (2) the Physical Thrill Seeking subscale correlates substantially with other measures of physical thrill seeking; (3) the Musical subscale correlates substantially with preferred stereo volume [r(73) = 0.51, P < 0.01], but not with absolute auditory threshold [r(40) = 0.08, NS]. Implications for the construct validity of the RAS and possible future refinement of the scale are discussed.     

Factor structure and correlates of the dissociative experiences scale in a large offender sample

The authors examined the psychometric properties, factor structure, and construct validity of the Dissociative Experiences Scale (DES) in a large offender sample (N = 1,515). Although the DES is widely used with community and clinical samples, minimal work has examined offender samples. Participants were administered self-report and interview measures, and a subsample was followed longitudinally to determine criminal and violent recidivism. The DES exhibited good psychometric properties, but an identified three-factor structure was of questionable replicability. Moreover, the DES factors displayed no evidence of differential correlates. DES total scores were correlated with trauma-related variables even after controlling for negative affectivity. Total scores were related to measures of antisocial behavior and aggression but did not predict recidivism. These findings support the reliability and construct validity of the DES in offenders but raise questions regarding the clinical utility of the DES factor scores above and beyond that of the total score.     

Factor structure of the private self-consciousness scale: role of item wording

In 3 studies, I have tested the structure of different phrasing versions of the Private Self-Consciousness Scale (PrSC; Fenigstein, Scheier, & Buss, 1975) using exploratory and confirmatory factor-analytic methods and examined their predictive validity. For the original version of the PrSC, a 2-factorial model similar to Nystedt and Ljungberg's (2002) solution was found to best fit the data. When all scale items included extreme rate of occurrence words such as always, a single-factor solution emerged. Finally, when all words reflecting rate of occurrence were removed, again a 2-factor structure emerged, although different in item composition from that of the original version. In addition, different patterns of association emerged between the PrSC factors and depression and self-esteem for the extreme and neutral versions. I discuss the importance of reconceptualizing self-consciousness and the need for a new, theoretically based scale for self-consciousness.     

The revised conners parent rating scale: Factor structure replication with a diversified clinical sample

The Revised Conners Teacher Rating Scale was completed as part of a comprehensive evaluation of 135 consecutive new patients seen in the Pediatric Neurology Learning Disability Clinic at the Medical College of Georgia. The questionnaires were subjected to principal components analysis with varimax rotation. Item analysis was conducted on the obtained subscales, and convergent validity was determined by correlation with the Revised Behavior Problem Checklist (Quay & Peterson, 1987). Finally, comparisons of the diagnostic groups were carried out across the subscales.I would like to thank Harry Davis, Office of Research Computing and Statistics, Medical College of Georgia, for his invaluable help in carrying out the computer analysis of the data.     

Factor structure of an Arabic translation of the scale, preference for numerical information

An Arabic translation of Viswanathan's 1993 scale, Preference for Numerical Information, was administered to 157 tenth-grade students (M age = 16.1 yr.) in the United Arab Emirates. Analysis showed that the scale was homogeneous as the factor solution was comparable to that reported in the original study and item scores were moderately correlated with total scores when used in a different cultural setting.     

Factor validation of the addiction severity index scale structure in persons with concurrent disorders

Confirmatory factor analysis was used to test the scale structure of the Addiction Severity Index (ASI) in a sample of 1,802 substance abusers (43% alcohol dependent) with a concurrent psychiatric disorder (46% with mood disorders). The fit of the original composite score model based on the work of P. L. McGahan, J. A. Griffith, R. Parente, and A. T. McLellan (1990) was compared with the evaluation indices (EIs) developed by A. I. Alterman et al. (1998). The 5-dimensional model based on the EIs was an overall better fit to the data. Internal consistency (Cronbach's alpha) for the EIs ranged from.66 (family domain) to.75 (legal domain). The 5 EIs were moderately correlated (rs =.42-.72) with the interviewer severity ratings from the ASI. Evaluation studies involving concurrent disordered substance abusers should use the EIs as summary measures of change.     

Factor analysis and scale revision

This article reviews methodological issues that arise in the application of exploratory factor analysis (EFA) to scale revision and refinement. The authors begin by discussing how the appropriate use of EFA in scale revision is influenced by both the hierarchical nature of psychological constructs and the motivations underlying the revision. Then they specifically address (a) important issues that arise prior to data collection (e.g., selecting an appropriate sample), (b) technical aspects of factor analysis (e.g., determining the number of factors to retain), and (c) procedures used to evaluate the outcome of the scale revision (e.g., determining whether the new measure functions equivalently for different populations).     

Factor analysis of the interpersonal trust scale with a noncollege population

This study tested the invariance of the factorial structure of Rotter's Interpersonal Trust Scale (ITS) in a noncollege population. Exploratory factor analysis of the responses of 214 volunteers yielded three factors interpreted as Exploitation, Sincerity, and Institutional Trust. This factor solution was cross-validated in a confirmation sample of 196 volunteers. Cosines between corresponding factors were high across samples and across sex. The similarity was pointed out between the present factor structure and the results of earlier studies with college students. Implications for possible refinement of the ITS were discussed.     

Factor structure and use of the hospital anxiety and depression scale in the homeless and socially marginalized

The homeless have been identified as a group at risk of significant anxiety and depression and screening is therefore highly desirable to identify those needing psychological and psychiatric support. However, the psychometric properties of routine screening instruments have yet to be established in this group. This study sought to determine the psychometric properties of the widely used Hospital Anxiety and Depression Scale in this group. Using a cross-sectional design, 314 clients presenting at homelessness units (shelters) supported by The Salvation Army were administered the HADS. Confirmatory factor analysis revealed three-factor models offered the best fit to the data (best-fit model CFI = .98, RMSEA = .06, WRMR = .87). This investigation confirms contemporary research findings that the HADS comprises an underlying tri-dimensional factor structure. However, the internal consistency of the HADS anxiety (alpha = .81) and depression (alpha = .90) sub-scales was excellent. The findings of the current study suggest that the HADS is a suitable screening tool in this group.     

Factor structure of the new environmental paradigm scale: evidence from an urban sample in southern California

This study examined the factor structure of the New Environmental Paradigm Scale using responses from 261 urban subjects from southern California. The analysis yielded findings inconsistent with many previous studies of the original scale. This study supported an 8-item two-factor model of the scale rather than the one-factor and three-factor models proposed earlier. A subsequent validation study provides evidence for this short form's validity, as the two factors were predictive of commitment to preservation of nature.     

Factor structure and item analysis of the yale food addiction scale in obese candidates for bariatric surgery

Converging research suggests phenomenological and neurobiological similarities between excessive food consumption and addictive behaviour in substance dependence. Recently, the Yale Food Addiction Scale (YFAS) has been proposed for the assessment of addictive eating behaviour. The German version of the YFAS was administered to obese individuals seeking bariatric surgery (N?=?96). Factor structure, internal consistency, and item statistics were analysed. Forty participants (41.70%) received a food addiction diagnosis. The one-factorial structure of the YFAS, which has been found in non-clinical samples, could be confirmed. All but three items had factor loadings >.50. Internal consistency was α?=?.82. Item analysis revealed that items related to unsuccessful attempts to cut down and consumption despite physical and emotional problems were endorsed by the majority of participants. Findings support the use of the YFAS in clinical populations, while applicability of some items differs between clinical and non-clinical samples. Copyright ? 2012 John Wiley & Sons, Ltd and Eating Disorders Association.     

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.     

Factor dimensions of the child Nowicki-Strickland internal-external scale

Previous factor analyses of the Nowicki Internal-External Scales have not yielded consistent results. The present study, factoring the Child Nowicki-Strickland Internal-External Scale (CNS-IE), and employing 871 male adolescents, discovered 4 clear factor dimensions that were labelled ‘Autonomy-Restriction’, ‘Reinforcement Endowed-Reinforcement Deprived‘, ‘Internal Determinism-External Determinism’ and ‘Social Competence-Social Impotence’. An alternative scoring procedure is suggested for item No. 38 and a 20-item short version of the CNS-IE Scale is also proposed.     

The structure of childhood disruptive behaviors

Attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) frequently co-occur. Comorbidity of these 2 childhood disruptive behavior domains has not been satisfactorily explained at either a structural or etiological level. The current study evaluated a bifactor model, which allows for a "g" factor in addition to distinct component factors, in relation to other models to improve understanding of the structural relationship between ADHD and ODD. Participants were 548 children (321 boys, 227 girls) between the ages of 6 years and 18 years who participated in a comprehensive diagnostic assessment incorporating parent and teacher ratings of symptoms. Of these 548 children, 153 children were diagnosed with ADHD (without ODD), 114 children were diagnosed with ADHD + ODD, 26 children were diagnosed with ODD (without ADHD), and 239 children were classified as non-ADHD/ODD comparison children (including subthreshold cases). ADHD symptoms were assessed via parent report on a diagnostic interview and via parent and teacher report on the ADHD Rating Scale. ODD symptoms were assessed via teacher report. A bifactor model of disruptive behavior, comprising a "g" factor and the specific factors of ADHD and ODD, exhibited best fit, compared to 1-factor, 2-factor, 3-factor, and 2nd-order factor models of disruptive behaviors. It is concluded that a bifactor model of childhood disruptive behaviors is superior to existing models and may help explain common patterns of comorbidity between ADHD and ODD.