Infant clothing: Sex labeling for strangers

Labeling an infant as a boy or girl affects behavior toward the infant. While intimates know a baby's sex label and behave consistently to the baby, strangers cannot unless given a cue. Forty-eight infants and their caretakers were observed in suburban malls to see if clothing normally provides such cues; 90% of the infants were dressed in sex-typed clothes. Girls wore or carried pink (75%), yellow, ruffles, puffed sleeves, and/or dresses. Boys wore blue (79%) and/or red. Observers were able to correctly guess the sex of “labeled” infants only. Surprisingly, simultaneous caretaker interviews revealed that parents do not spontaneously mention sex as a factor in clothing choice, nor do they feel they would be very bothered by strangers' mistaking the infant's sex.     

Sex differences in the genetic and environmental influences on childhood conduct disorder and adult antisocial behavior

Sex differences in the genetic and environmental influences on childhood conduct disorder and adult antisocial behavior were examined in a large community sample of 6,383 adult male, female, and opposite-sex twins. Retrospective reports of childhood conduct disorder (prior to 18 years of age) were obtained when participants were approximately 30 years old, and lifetime reports of adult antisocial behavior (antisocial behavior after 17 years of age) were obtained 8 years later. Results revealed that either the genetic or the shared environmental factors influencing childhood conduct disorder differed for males and females (i.e., a qualitative sex difference), but by adulthood, these sex-specific influences on antisocial behavior were no longer apparent. Further, genetic and environmental influences accounted for proportionally the same amount of variance in antisocial behavior for males and females in childhood and adulthood (i.e., there were no quantitative sex differences). Additionally, the stability of antisocial behavior from childhood to adulthood was slightly greater for males than females. Though familial factors accounted for more of the stability of antisocial behavior for males than females, genetic factors accounted for the majority of the covariation between childhood conduct disorder and adult antisocial behavior for both sexes. The genetic influences on adult antisocial behavior overlapped completely with the genetic influences on childhood conduct disorder for both males and females. Implications for future twin and molecular genetic studies are discussed.     

Reacting to reactance: An Interpersonal interpretation of the need for freedom

This study was designed to investigate the conditions under which the negative consequences of social influence attempts can be mitigated by freedom-affirming interventions. Eighty-eight high school girls received an influence message, presumably written by a co-worker, containing either a threat or a promise. In addition, subjects were or were not given a choice option as to mode of compliance, if they chose to comply with the message. In half the cases, the Interpersonal condition, subjects received their choice/no choice option from their co-worker; in the other half of the cases, the Noninterpersonal condition, subjects were assigned the choice/no choice option by a random event unknown to the influencing agent. As anticipated, in the Interpersonal as compared to the Noninterpersonal condition, (a) threats produced greater compliance when a choice was offered than when it was not, and (b) promises and threats were more equivalent in gaining compliance when a choice was offered than when it was not. These results, which suggest that in a social setting individuals' concerns about freedom are interpersonally motivated, are discussed in terms of their relation to and implications for reactance theory.     

Effects of teaching an introductory psychology laboratory using a computerized research tool

In the introductory psychology laboratory at Drexel University, we employ courseware modules that transform the computer into various pieces of psychological research equipment. Students enrolled in this course use the courseware modules in a series of experiments that investigate motor learning, perception, memory, and other psychological phenomena. In choosing this form of computerization, we have encountered challenges to our methods of instruction, both in the laboratory and in the lecture hall. Opportunities, in the form of financial and programming assistance, have also resulted from our computerization efforts.     

Differentiating overreporting and extreme distress: MMPI-2 use with compensation-seeking veterans with PTSD

This purpose of this study was to examine overreporting on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2; Butcher, Dahlstrom, Graham, Tellegen, & Kaemmer, 1989) in compensation-seeking veterans with posttraumatic stress disorder (PTSD). A sample of veterans tested during a V.A. hospital compensation and pension exam were given the MMPI-2 and measures of PTSD, depression, and combat exposure. Veteran's MMPI-2s were only included in the analyses if their profile was extremely exaggerated, as measured by an F scale T score above 80, did not elevate the MMPI-2 VRIN and TRIN scales, and had a primary diagnosis of PTSD (n = 127). Using the Infrequency-Psychopathology, F(p), scale to distinguish overreporting from distress, it was found that 98 veterans elevated profiles due to distress, whereas 29 elevated due to overreporting, F(p) below and above 7, respectively. Differences between groups on MMPI-2 clinical scales and the other measures were assessed. Implications of these findings for assessing veteran response style and using the MMPI-2 with a PTSD population are discussed.     

Benchmarking Treatment Response in Tourette’s Disorder: A Psychometric Evaluation and Signal Detection Analysis of the Parent Tic Questionnaire

This study assessed the psychometric properties of a parent-reported tic severity measure, the Parent Tic Questionnaire (PTQ), and used the scale to establish guidelines for delineating clinically significant tic treatment response. Participants were 126 children ages 9 to 17 who participated in a randomized controlled trial of Comprehensive Behavioral Intervention for Tics (CBIT). Tic severity was assessed using the Yale Global Tic Severity Scale (YGTSS), Hopkins Motor/Vocal Tic Scale (HMVTS) and PTQ; positive treatment response was defined by a score of 1 (very much improved) or 2 (much improved) on the Clinical Global Impressions – Improvement (CGI-I) scale. Cronbach’s alpha and intraclass correlations (ICC) assessed internal consistency and test-retest reliability, with correlations evaluating validity. Receiver- and Quality-Receiver Operating Characteristic analyses assessed the efficiency of percent and raw-reduction cutoffs associated with positive treatment response. The PTQ demonstrated good internal consistency (α = 0.80 to 0.86), excellent test-retest reliability (ICC = .84 to .89), good convergent validity with the YGTSS and HM/VTS, and good discriminant validity from hyperactive, obsessive-compulsive, and externalizing (i.e., aggression and rule-breaking) symptoms. A 55% reduction and 10-point decrease in PTQ Total score were optimal for defining positive treatment response. Findings help standardize tic assessment and provide clinicians with greater clarity in determining clinically meaningful tic symptom change during treatment.     

Effects of headings and familiarity with a text on strategies for searching a text

College students were videotaped while they searched chapter-length texts for answers to specific questions. The texts either did not contain headings or contained one of three types of headings that varied in the information that they provided about text organization and content. Familiarity with the text was varied by manipulating (1) the number of prior searches of the text and (2) whether or not the text was read before searching. Measures were taken of the time spent examining each page and of the sequence of examination of pages. Cluster analyses of the search measures revealed that familiarity with the text influenced a searcher's strategy for selecting which pages to examine. Once a page was selected for examination, both headings and familiarity influenced how the page was inspected.