An SPSS implementation of the nonrecursive outlier deletion procedure with shiftingz score criterion (Van Selst & Jolicoeur, 1994)

Sophisticated univariate outlier screening procedures are not yet available in widely used statistical packages such as SPSS. However, SPSS can accept user-supplied programs for executing these procedures. Failing this, researchers tend to rely on simplistic alternatives that can distort data because they do not adjust to cell-specific characteristics. Despite their popularity, these simple procedures may be especially ill suited for some applications (e.g., data from reaction time experiments). A user friendly SPSS Production Facility implementation of the shifting z score criterion procedure (Van Selst & Jolicoeur, 1994) is presented in an attempt to make it easier to use. In addition to outlier screening, optional syntax modules can be added that will perform tedious database management tasks (e.g., restructuring or computing means).     

Do we know how we cope? Relating daily coping reports to global and time-limited retrospective assessments

The current study examined the concordance among daily, trait (global retrospective), and time-limited retrospective reports of coping. A sample of 93 adults completed the COPE (C. S. Carver, M. F. Scheier, & J. K. Weintraub, 1989) prior to recording coping with the day's most negative event for 30 consecutive days. At the end of daily data collection, participants recalled to what extent they used each of 16 coping strategies over the past 30 days. Whereas findings indicate generally good concordance between daily and time-limited retrospective reports, concordance between global and daily reports was weak. Only limited evidence was found for systematic individual differences in concordance. Time-limited reports appear to be an adequate, though not ideal, method of determining usual patterns of coping with stress.     

Construct validity of the psychological inventory of criminal thinking styles in relationship to the PAI, disciplinary adjustment, and program completion

We evaluated the convergent and discriminant validity of the Psychological Inventory of Criminal Thinking Styles (PICTS; Walters, 1995) in a group of 199 maximum security prisoners. As anticipated, the PICTS Confusion scale correlated with the Personality Assessment Inventory (PAI; Morey, 1991) Negative Impression scale, whereas the PICTS Defensiveness scale paralleled the PAI Positive Impression scale. Also as predicted, a greater portion of the PICTS thinking style scales correlated with the PAI Antisocial Features scale than correlated with the PAI Somatic Complaints, Anxiety, Depression, Mania, Paranoia, and Schizophrenia scales. When the PICTS composite scales were converged onto behavioral indexes, modest statistically significant relationships surfaced between the PICTS Reactive scale and a record of disciplinary infractions and between the PICTS Proactive scale and program completion.     

The cultural grounding of personal relationship: enemyship in North American and West African worlds

Three studies investigated the implicit constructions of reality associated with cultural differences in enemyship (personal relationship of hatred, malice, and sabotage). Results of interview (Study 1; N = 98) and questionnaire (Study 2; N = 166) research indicated that enemyship was more prominent among Ghanaian participants than among U.S. participants. Additional evidence located a potential source of these differences in different constructions of relationship. Responses linked the prominence of enemyship to constructions of relationship as inherent, enduring connection (interdependent models). Responses linked the sense of freedom from enemyship to constructions of relationship as the discretionary product of atomistic selves (independent models). An experiment among Ghanaian participants (Study 3; N = 48) provided evidence that increasing experience of inherent connection can be sufficient to increase accessibility of enemyship. Results help to illuminate the cultural grounding of personal relationship and other phenomena that are typically invisible in mainstream theory and research.     

Local proactive interference in delayed matching to sample: the role of reinforcement

Discriminability in delayed matching to sample was lower when the samples on consecutive trials differed compared with when samples on consecutive trials were the same. This local proactive interference occurred when correct choices on the previous trial were reinforced but not when correct choices on the previous trial were not reinforced. When the choice on the previous trial was incorrect, discriminability was higher on different consecutive trials than on same trials. These effects were amplified by varying the ratio of reinforcers for correct choices, as predicted by a model that attributes local proactive interference to an interaction between control by the sample on the current trial and the influence of reinforcers for correct choices on previous trials.     

Predicting criminal justice outcomes with the Psychopathy Checklist and Lifestyle Criminality Screening Form: a meta-analytic comparison

Studies that have used either the Psychopathy Checklist--Revised (PCL-R) or the Lifestyle Criminality Screening Form (LCSF) to predict criminal justice outcomes (disciplinary adjustment and recidivism) were subjected to meta-analysis and compared. Analogous results were obtained with the PCL-R and LCSF even though the PCL-R takes 2-3 hours and the LCSF 10 minutes to complete. It is concluded that pending further evaluation in which these assessment measures are directly compared, the cost-effectiveness of the LCSF makes it an attractive alternative to the PCL-R in situations where risk of future offender disciplinary maladjustment or recidivism is of principal concern.     

Behavioral and personality characteristics of children with reactive attachment disorder

The authors compared behavioral and personality characteristics of children with reactive attachment disorder (RAD) with non-RAD children. Participants included parents of children with RAD (n = 21), parents of non-RAD children (n = 21), and some of the children (n = 20). The parents completed questionnaires regarding behavioral and personality characteristics of their children. Parents were also given the option of asking their children to participate in the study by completing self-report measures. Several significant findings were obtained. Children with RAD scored lower on empathy but higher on self-monitoring than non-RAD children. These differences were especially pronounced based on parent ratings and suggest that children with RAD may systematically report their personality traits in overly positive ways. Their scores also indicated considerably more behavioral problems than scores of the control children. Previous research has been generally qualitative in nature. The current research represents some of the first quantitative, empirical work documenting specific behaviors associated with the diagnosis of RAD. The findings of this study have implications for better understanding and dealing with reactive attachment disorder.     

Possible olfaction-based mechanisms in human kin recognition and inbreeding avoidance

Three studies explored kin recognition through olfaction. In Study I, adults (N=22) were tested for ability to identify the odors of themselves; their mother; their father; a sister; a brother; a familiar, unrelated individual; and a stranger. Acquaintances were identified as accurately as biological kin, implicating an association mechanism. However, biological kin were often confused, implicating phenotypic matching. Same-sex kin were confused more than opposite-sex kin, but mainly when same-sex kin had odors of similar intensity. Study II implicated phenotypic matching. Mothers (N=18) could identify their biological children but not their stepchildren. The preadolescent children (N=37) identified their full siblings but not half-siblings or stepsiblings. Thus, olfactory cues may help mediate favoritism of blood relatives. In Study III, mutual olfactory aversion occurred only in the father-daughter and brother-sister nuclear family relationships. Recognition occurred between opposite-sex siblings but not same-sex siblings. Thus, olfaction may help mediate the development of incest avoidance during childhood (the Westermarck effect).     

Good pitch memory is widespread

Abstract - Here we show that good pitch memory is widespread among adults with no musical training. We tested unselected college students on their memory for the pitch level of instrumental soundtracks from familiar television programs. Participants heard 5-s excerpts either at the original pitch level or shifted upward or downward by 1 or 2 semitones. They successfully identified the original pitch levels. Other participants who heard comparable excerpts from unfamiliar recordings could not do so. These findings reveal that ordinary listeners retain fine-grained information about pitch level over extended periods. Adults' reportedly poor memory for pitch is likely to be a by-product of their inability to name isolated pitches.