A Dual-Process Discrete-Time Survival Analysis Model: Application to the Gateway Drug Hypothesis

The gateway drug model is a popular conceptualization of a progression most substance-users are hypothesized to follow as they try different legal and illegal drugs. Most forms of the gateway hypothesis are that "softer" drugs lead to "harder," illicit drugs. However, the gateway hypothesis has been notably difficult to directly test - i.e., to test as competing hypotheses in a single model that licit drug use might lead to illicit drug use or the reverse. This article presents a novel statistical technique, dual-process discrete-time survival analysis, which enables this comparison. This method uses mixture-modeling software to estimate two concurrent time-to-event processes and their effects on each other. Using this method, support for the gateway hypothesis in the National Longitudinal Survey of Youth 1997 was weak. However, this paper was not designed as a strong test of causal direction but more as a technical demonstration, and suffered from certain technological limitations. Both these limitations and future directions are discussed.     

Play Group Therapy with Psychotic Adolescent Girls

In this paper, by using the perspective of self psychology, we hope to illustrate and explicate (through clinical examples) the positive aspects of the pairing phenomenon in group therapy with the elderly. Traditionally subgrouping or pairing has been viewed as the “Achilles' heel of group therapy,” and usually interpreted as defensive and destructive to group process. In this paper we distinguish between those instances of pairing and subgrouping that are defensive and those that are reparatory of the self system (the latter involving twinship and alter ego selfobject transferences). These reparatory transferences may play a constructive role in establishing group cohesion and allaying primitive somatic anxieties, especially in the elderly patient.     

Alcohol-related problems and risk of suicide among college students: the mediating roles of belongingness and burdensomeness

The relationship among alcohol-related problems, perceived burdensomeness, thwarted belongingness, and suicide proneness in undergraduate college students (N=996) was examined. As hypothesized, alcohol-related problems, perceived burdensomeness, and thwarted belongingness were all significantly and positively correlated with suicide proneness. The relation between experiencing alcohol-related problems and suicide proneness was, in part, accounted for by perceived burdensomeness and thwarted belongingness. Additionally, the mediation via perceived burdensomeness was significantly stronger than the mediation via thwarted belongingness. Results suggest that it would be advisable for clinicians to be aware of students' experiences with alcohol-related problems in conjunction with their levels of burdensomeness and belongingness when assessing for suicide risk.     

Toddler subtraction with large sets: further evidence for an analog-magnitude representation of number

Two experiments were conducted to test the hypothesis that toddlers have access to an analog-magnitude number representation that supports numerical reasoning about relatively large numbers. Three-year-olds were presented with subtraction problems in which initial set size and proportions subtracted were systematically varied. Two sets of cookies were presented and then covered. The experimenter visibly subtracted cookies from the hidden sets, and the children were asked to choose which of the resulting sets had more. In Experiment 1, performance was above chance when high proportions of objects (3 versus 6) were subtracted from large sets (of 9) and for the subset of older participants (older than 3 years, 5 months; n = 15), performance was also above chance when high proportions (10 versus 20) were subtracted from the very large sets (of 30). In Experiment 2, which was conducted exclusively with older 3-year-olds and incorporated an important methodological control, the pattern of results for the subtraction tasks was replicated. In both experiments, success on the tasks was not related to counting ability. The results of these experiments support the hypothesis that young children have access to an analog-magnitude system for representing large approximate quantities, as performance on these subtraction tasks showed a Weber's Law signature, and was independent of conventional number knowledge.     

Assessing posttraumatic stress disorder with the MMPI-2 in a sample of workplace accident victims

In this study, the predictive capacity of the Minnesota Multiphasic Personality Inventory-2 Posttraumatic Stress Disorder-Keane (MMPI-2 PK) scale was examined in a sample of trauma victims who experienced a serious workplace-related accident and subsequent injury. In keeping with a number of previous investigations, the PK scale was largely ineffective in identifying posttraumatic stress disorder (PTSD) beyond overall symptom and functional severity. In contrast, sets of clinical and content scales proved to be significant predictors of PTSD. These findings suggest that the PK scale is not particularly useful in detecting PTSD in civilian trauma samples. Clinicians might be best advised to use the MMPI-2 clinical and content scales in their assessment of PTSD in civilian patients presenting with a history of trauma.     

The Multidimensional Scale of Perceived Social Support: Analyses of Internal Reliability,Measurement Invariance,and Correlates Across Gender

In this study, we examined estimates of internal consistency reliability, measurement invariance, and differential correlates of the Multidimensional Scale of Perceived Social Support (MSPSS; Zimet, Dahlem, Zimet, & Farley, 1988) in samples of undergraduate men (n = 270) and women (n = 340). The MSPSS is designed to assess 3 sources of perceived social support: family, friends, and significant others. The participants ranged in age from 18 to 24 years (M _age = 19.60, SD = 1.4 years). First, composite scale reliability and coefficient omega methods provided adequate estimates of internal consistency reliability for the original MSPSS total and subscale scores. Second, results of multiple-groups invariance confirmatory factor analysis provided support for configural and metric invariance. Partial measurement invariance was attained for scalar and strict measurement invariance across men and women. Additionally, given the high correlations among the first-order factors, we conducted multiple-groups bifactor item response theory (bifactor-IRT) analysis to evaluate further the performances of the individual MSPSS items across gender. Support for the bifactor model was strong. Third, we conducted a series of simultaneous regression analyses to identify potential correlates of the social support construct for women and men.     

Shape and Significance of Feminine Beauty: An Evolutionary Perspective

Evolutionary and feminist perspectives on female beauty are compatible in some respects, such as the oppressive and destructive outcomes for women as a consequence of the importance attached to female beauty. The perspectives tend to differ on the issue of the origins of (some) beauty standards. Evolutionary scientists have proposed that beauty is a reliable cue for women??s health and fertility. However, as the factors regulating health and reproductive capabilities cannot be directly observed, sexual selection has fashioned psychological adaptations to attend to bodily features that are correlated with health and fertility. It is proposed that people resonate to such bodily features and find them attractive. One such bodily feature in women is gynoid body distribution (i.e., female-normative body shape in which fat distribution is concentrated around hips and thighs). Gynoid body fat distribution is measured by the ratio of waist and hips circumferences (WHR). In this paper we summarize empirical evidence showing that WHR is an independent predictor for risks for major diseases, optimal hormonal profile, and reproductive capabilities. Next, we present findings from studies that demonstrate systematic variations in the size of WHR produce systematic changes in judgment of female attractiveness within diverse societies throughout the world. Such widespread appeal of low WHR suggests that people have evolved mental mechanisms to judge body features indicative of good health as attractive, meaning that some standards of beauty are not arbitrary or constructed. We conclude that a better understanding and appreciation of the beauty-health linkage can be empowering to women.     

Improving organizational newcomers’ creative job performance through creative process engagement: The moderating role of a synergy diversity climate

Despite the mounting research demonstrating that employee seniority positively relates to creative job performance, we predict that a synergy diversity climate eliminates the employee seniority–creative job performance relationship by unleashing the creative potential of organizational newcomers. Drawing upon the integration-and-learning perspective for managing diversity, Study 1 finds that a synergy diversity climate moderates the relationship between employee seniority and supervisor-rated creative job performance lending support to our hypothesis. Study 2 provides an extension by showing how creative process engagement mediates this moderating effect on self-rated creative performance. Finally, Study 3 replicates and extends Study 2 by demonstrating the mediating role of creative process engagement but utilizing supervisor-rated creative job performance, while again showing synergy diversity climate to be an important boundary condition. In sum, we find that synergy diversity climate, as opposed to fairness and discrimination diversity climate, interacts with employee seniority by facilitating greater creative process engagement for newcomers subsequently impacting creative job performance. We discuss theoretical and practical implications for how the individual-level creative job performance effects may represent a microfoundation to creative team dynamics that confer a sustainable competitive advantage.