Dimensional models of psychopathology: research agenda and clinical utility

This commentary emphasizes the implications for a mental health research agenda that stem from the papers in this special section on dimensional models of psychopathology. These include the need to extend dimensional models to a wider range of psychopathology; the relationship of the dimensions described in these papers, largely based on symptom and self-report measures, to findings from current research in genetics, neuroimaging, and other domains of neuroscience; the need for new scales that can assess the entire range of relevant dimensions with modern psychometric techniques; and ways to employ these dimensions in applied clinical situations. It is concluded that hierarchical dimensional models offer powerful ways of organizing our thinking about psychopathology and will serve to guide many promising avenues of future research.     

Assessment of adult psychopathology: meta-analyses and implications of cross-informant correlations

Assessment of adult psychopathology relies heavily on self-reports. To determine how well self-reports agree with reports by "informants" who know the person being assessed, the authors examined 51,000 articles published over 10 years in 52 peer-reviewed journals for correlations between self-reports and "informants" reports. Qualifying correlations were found in 108 (0.2%) of the articles. When self-reports and informant reports were obtained with parallel instruments, mean cross-informant correlations were .681 for substance use, .428 for internalizing, and .438 for externalizing problems. When based on different instruments, the mean cross-informant correlation was .304. The moderate sizes of the correlations argue for systematically obtaining multi-informant data. National survey findings were used to illustrate practical ways to obtain and use such data.     

Dimensional,similarity, and configurai classification of integral and separable stimuli

Subjects classified sets of two-dimensional stimuli into two or three groups in any way they wished. For integral stimuli, classification was based on numerical balance and the similarity structure. For separable stimuli, classification was based on the dimensional structure and the configurai properties of the stimulus set. These results replicate and extend those of Handel and Imai (1972). In addition, they suggest that no closed set of stimulus concepts is possible.     

Effects of nutritional supplements on aggression,rule‐breaking,and psychopathology among young adult prisoners

Objective: In an earlier study, improvement of dietary status with food supplements led to a reduction in antisocial behavior among prisoners. Based on these earlier findings, a study of the effects of food supplements on aggression, rule‐breaking, and psychopathology was conducted among young Dutch prisoners. Methods: Two hundred and twenty‐one young adult prisoners (mean age=21.0, range 18–25 years) received nutritional supplements containing vitamins, minerals, and essential fatty acids or placebos, over a period of 1–3 months. Results: As in the earlier (British) study, reported incidents were significantly reduced (P=.017, one‐tailed) in the active condition (n=115), as compared with placebo (n=106). Other assessments, however, revealed no significant reductions in aggressiveness or psychiatric symptoms. Conclusion: As the incidents reported concerned aggressive and rule‐breaking behavior as observed by the prison staff, the results are considered to be promising. However, as no significant improvements were found in a number of other (self‐reported) outcome measures, the results should be interpreted with caution. Aggr. Behav. 36:117–126, 2010. © 2009 Wiley‐Liss, Inc.     

Compliant in a moment: a commentary on nevin

Nevin's scholarly and timely discussion attempts to maintain the precarious union of the experimentally derived theory of behavioral momentum with applications of the behavioral momentum construct to human subjects in applied settings. Nevin's discussion adds much-needed clarification to a process that at times has proven to be awkward for applied researchers. In this commentary, we will address three general questions: (a) Can the applications of behavioral momentum be derived from the theory as conceptualized by Nevin? (b) Could those applications have been developed had the theory not been formulated? (c) Does behavioral momentum theory add significantly to the compliance literature?     

"False recall of critical lures in students with diagnosed learning disabilities": a historical correction and a brief commentary

Referring to a popular procedure for examining false recall, in 2007 Branch, et al. stated that its two acronyms ("DRM" and "DRMRS") reflected variations in the procedure at the time of testing. However, the acronyms primarily reflect variations in the people to whom the basic procedure should be attributed. A calculation error in their paper is also corrected, and it is observed that magnitudes of both false recall and correct recall obtained by their young adolescents with no learning difficulties are similar to those with adults. Theoretical implications are discussed.     

Movement in social orientations: a commentary on Kelley

After reviewing some classic contributions to the truly social social–psychological literature (Lewin, Horney, Festinger), this commentary outlines how and why Kelley's analysis extends and complements more traditional approaches to interdependence. Three strengths are emphasized, suggesting that Kelley's analysis (a) offers a much-needed situation-based taxonomy for different social orientations and interpersonal phenomena, (b) serves the ecological validity of social orientations, and (c) potentially helps us understand why classical dimensions of person judgment include not only goodness versus badness, but also movement-related orientations such as dominance versus submission, strength versus weakness, or activity versus passivity. Kelley's analysis can be extended by developing further domain-specific theory and methodology for examining the temporal and sequential aspects of social orientations, and by applying a means–end analysis to differing social orientations identified in Kelley's analysis. Finally, following Chuck McClintock (1972), it is argued that the field should reserve the concept of social value orientation to define allocational preferences relevant to valuing outcomes for self and others. This basic orientation should meaningfully ‘drive’ the ways in which we approach interdependent others, solve interdependence problems, and utilize interdependence opportunities. © 1997 John Wiley & Sons, Ltd.     

Dimensional structure and psychopathology correlates of the fear survey schedule (FSS-III) in a phobic population: A factorial definition of agoraphobia

The responses of 703 non-institutionalized phobics to the Fear Survey Schedule (FSS-III) were factor-analyzed utilizing a principal components procedure. Factors previously identified in student, adolescent and ‘non-phobic patient’ populations—(I) Social Anxiety, (III) Fears related to Bodily Injury, Death and Illness. (IV) Fear of Display to Sexual and Aggressive Scenes, (V) Small Animal Fears—were replicated. Additionally, an Agoraphobia (II) factor, corroborating recent findings by Hallam and Hafner (1978), and pointing to the specificity of this fear, emerged. Due to substantially high intercorrelations found, the Social Inadequacy dimension of the Symptom Checklist (SCL-90) and the Social Anxiety scale (I), on the one hand, and the Agoraphobic dimension of the SCL-90 and the Agoraphobia scale (II), on the other, could be used interchangeably with phobic populations. A higher-order factor analysis run on psychopathology scales employed, including factored FSS scales, yielded three components, (1) Neuroticism, (2) Phobia and (3) Agoraphobia. Opportunity was taken to define the Agoraphobic Syndrome empirically. A specific Somatization dimension was as highly related to Neuroticism, as to the higher-order Agoraphobic cluster, clearly supporting clinical observations with regard to the Agoraphobic syndrome. Some interesting findings are focused upon and discussed.     

Underreporting of psychopathology on the MMPI-2: a meta-analytic review

Meta-analytic techniques were applied to studies of the MMPI-2 in which participants given standard instructions were compared with participants instructed or believed to have been underreporting. Traditional and supplementary indices of underreporting yielded a mean effect size of 1.25, suggesting that underreporting respondents differ from those responding honestly by a little more than 1 standard deviation, on the average, on these scales. Analyses of classification accuracy suggested that several scales are moderately effective in detecting underreporting, although accuracy decreases if participants have been coached about validity scales. Base rates of defensive responding in relevant populations are reviewed, and methodological issues, including research designs, coaching, and incremental validity of supplementary underreporting scales, are discussed.