Electrophysiological correlates of observational learning in children

Observational learning is an important mechanism for cognitive and social development. However, the neurophysiological mechanisms underlying observational learning in children are not well understood. In this study, we used a probabilistic reward‐based observational learning paradigm to compare behavioral and electrophysiological markers of individual and observational reinforcement learning in 8‐ to 10‐year‐old children. Specifically, we manipulated the amount of observable information as well as children's similarity in age to the observed person (same‐aged child vs. adult) to examine the effects of similarity in age on the integration of observed information in children. We show that the feedback‐related negativity (FRN) during individual reinforcement learning reflects the valence of outcomes of own actions. Furthermore, we found that the feedback‐related negativity during observational reinforcement learning (oFRN) showed a similar distinction between outcome valences of observed actions. This suggests that the oFRN can serve as a measure of observational learning in middle childhood. Moreover, during observational learning children profited from the additional social information and imitated the choices of their own peers more than those of adults, indicating that children have a tendency to conform more with similar others (e.g. their own peers) compared to dissimilar others (adults). Taken together, our results show that children can benefit from integrating observable information and that oFRN may serve as a measure of observational learning in children.     

Alternative Approaches to Addressing Non-Normal Distributions in the Application of IRT Models to Personality Measures

It is generally assumed that the latent trait is normally distributed in the population when estimating logistic item response theory (IRT) model parameters. This assumption requires that the latent trait be fully continuous and the population homogenous (i.e., not a mixture). When this normality assumption is violated, models are misspecified, and item and person parameter estimates are inaccurate. When normality cannot be assumed, it might be appropriate to consider alternative modeling approaches: (a) a zero-inflated mixture, (b) a log-logistic, (c) a Ramsay curve, or (d) a heteroskedastic-skew model. The first 2 models were developed to address modeling problems associated with so-called quasi-continuous or unipolar constructs, which apply only to a subset of the population, or are meaningful at one end of the continuum only. The second 2 models were developed to address non-normal latent trait distributions and violations of homogeneity of error variance, respectively. To introduce these alternative IRT models and illustrate their strengths and weaknesses, we performed real data application comparing results to those from a graded response model. We review both statistical and theoretical challenges in applying these models and choosing among them. Future applications of these and other alternative models (e.g., unfolding, diffusion) are needed to advance understanding about model choice in particular situations.     

The Mainline Sidelined: The Sociology of Religion Unbound

This paper examines an expanding focus in the content of what members of SSSR study and show how this change is reflected in the publications in the journal. I offer four factors that might effect what we study: changes in the world, changes in who we are, changes in funding sources, and changes in the theoretical frames. I discuss the “cultural turn” as new theoretical frame, which has had important implications for the study of religion. 1 then return to the question of changes in the world. I end with my expectation that we will see greater yet inclusiveness in the future.     

Latino College Student Adjustment: Does an Increased Presence Offset Minority‐Status and Acculturative Stresses?1

This study examined whether minority‐status stresses and acculturative stresses increase the risk of psychological maladjustment of Latino students at a university where Latinos constitute the largest ethnic group. Participants were 338 Latino (228 Mexican American, 110 Central American) college students who responded to a mailed survey. The results of 2 separate hierarchical regression analyses of psychological distress and well‐being, controlling for demographic (gender, socioeconomic status, and ethnicity). sociocultural (level of acculturation), college role (generic college stresses), and personal (academic self‐confidence) influences provided partial support for our hypothesis and demonstrated the incremental predictive validity of acculturative stresses, but not of minority‐status stresses. Results are discussed in terms of the variety of stresses that Latino college students are likely to experience.     

Spillover between mothers' postdivorce relationships: The mediating role of parenting stress

This study examined the differences and associations between divorced mothers' relationships with their ex‐partners and with their children, and investigated whether this association is mediated by mothers' experience of parenting stress. A questionnaire was completed by 117 divorced single mothers and 64 remarried mothers. Results show that the single mothers and the remarried mothers did not differ on postdivorce family relationship quality or on their experience of parenting stress. Furthermore, divorced mothers' relationship with their ex‐partners was found to be associated with the quality of the mother–child relationship, but not when controlling for mothers' experience of parenting stress. The results show that maternal parenting stress mediates the association between conflicts between ex‐partners and the quality of the mother–child relationship.     

Sudden Unexpected Versus Violent Death and PTSD Symptom Development

Changes to posttraumatic stress disorder (PTSD) trauma criterion in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM–5) have been an area of much scrutiny and debate. One of the proposed changes included removing sudden unexpected death (SUD) from the list of potentially traumatic events. This study tested the extent to which unexpected death differed from violent death and other traumas as measured by PTSD symptoms. Our results indicated a significant difference in symptom development between those experiencing sudden violent death and sudden unexpected, but nonviolent, death. Additional analyses at the DSM–IV symptom cluster level, as well as with Simms, Watson, and Doebbeling’s (2002) factor structure of PTSD symptoms, suggested further distinctions between event types and symptom development. The extent to which SUD should be included in the trauma criterion is considered.     

Programming Time as a Function of Response Duration

Reaction time was longer prior to longer-lasting pressing responses for low probability, unanticipated movements. By contrast, reaction time was independent of response duration for high probability, anticipated movements. This replicates and extends previous findings for choice and simple reaction time in the “dit-dah” paradigm. The present results (unanticipated responses) cannot be given a selective anticipation interpretation because the comparison is between responses which are never anticipated. The previous paradigm was open to an alternative interpretation in which selective anticipation of dit rather than dah could have produced the differences in choice reaction time. Confirmation of the finding that variations in required response duration lead to differences in reaction time supports the view that the underlying parameter of “complexity” in the “memory drum theory” may be response duration.     

REARRANGING NATURALLY OCCURRING CONTINGENCIES TO INCREASE DESIRABLE BEHAVIOR IN A TODDLER CLASSROOM

Toddlers often display problem behavior during transitions. We rearranged naturally occurring events in a toddler classroom to promote more desirable classroom behavior during transitions to meals. In the intervention condition, teachers transitioned each child to meals only when that child was seated on a play mat (a requisite for engagement in teacher‐led play activities). In the reversal condition, teachers selected each child to transition when that child was by the barrier to the meal area (a practice commonly observed under natural conditions). The intervention increased the mean percentage of intervals when children were on the play mat and decreased the percentage of intervals when children were by the barrier. Individual child data show positive outcomes for five of six children. Results are discussed in terms of the positive effects of small manipulations to existing contingencies on classroom behavior as well as their potential influence on the adoptability of classroom interventions. Copyright © 2014 John Wiley & Sons, Ltd.     

Is expressive suppression an effective coping strategy? A study of Chinese rescue medical staff following an earthquake

The current study examined the function of expressive suppression among Chinese rescue medical staff following a major earthquake. We administered self‐report questionnaires to (1) a sample of Chinese hospital medical staff (n = 305) who assisted victims of the Sichuan earthquake, and (2) a second sample of Chinese hospital medical staff (n = 149) who had not been exposed to a major stressor. To examine possible interaction effects among differing emotion regulation strategies, we also conducted structured interviews with a subset of rescue medical staff to obtain support for a positive function of expressive suppression and a mediating role of positive reappraisal. Structural equation modelling indicated that expressive suppression was associated with higher levels of job engagement and lower levels of job burnout among the rescue medical staff and that these effects were mediated by positive reappraisal. However, for regular medical staff (not exposed to traumatic stress), expressive suppression was associated with higher levels of both job engagement and job burnout; these effects were mediated by acceptance. These results provide preliminary evidence for the positive role of expressive suppression within Chinese culture.