Factors associated with traumatic symptoms and internalizing problems among adolescents who experienced a traumatic event

The aim of the present study was to identify factors that are related to the traumatic symptoms and problem behavior among adolescents who experienced the New Years fire in 2001 in Volendam, The Netherlands. Three groups of factors were considered: pre-trauma (personality and coping), trauma-related (physical and emotional proximity to disaster), and post-trauma factors (received social support). Forty-five adolescents completed the questionnaire. Two years after the disaster, these adolescents experienced significant traumatic stress reaction (70% within the clinical range) and showed clinically significant levels of internalizing problems (37%). Pre-trauma, individual factors were identified as the most important predictors of distress, followed by received social support. The indicators of physical and emotional proximity to disaster explained little variance in distress.     

Motivation and memory in zebra finch (<Emphasis Type="Italic">Taeniopygia guttata</Emphasis>) foraging behavior

Remembering combinations of information such as what resources have been seen in which locations could play an important role in enhancing individual survival through increased foraging success. To date, there have been relatively few investigations of avian memory involving more than one category of information. This study explored zebra finches’ (Taeniopygia guttata) capacity to recall two categories in combination, namely food-type and spatial location. Birds were trained to remove variously weighted flaps to find two types of food hidden beneath. Memory for food-types and locations was assessed by pre-feeding the birds to satiety on and devaluing one food-type, and then testing the birds’ efficiency at finding the non-devalued food. When allowed one trial to learn locations of two food rewards that were hidden beneath lightly weighted flaps, birds performed better than chance at locating a food reward. However, they did not preferentially search for the non pre-fed food, suggesting that they were unable to recall both food type and location in combination. Zebra finches made fewer errors when tested on the one-trial task using more heavily weighted flaps than with lightly weighted flaps; there was equivocal evidence that they remembered which food type was hidden where on this task. When given repeated exposures to the locations of the two food rewards, finches located a food reward more accurately than on the one-trial tasks, and were also more likely to recall the locations of the different food types. In this foraging paradigm, experience and motivation may have influenced the birds’ performance.     

Leisure time physical activity motives and smoking in adolescence

ObjectivesThe study aimed to gain a better understanding of the relationship between leisure time physical activity and smoking in adolescence by investigating adolescents' motives for participation in leisure time physical activity.MethodsThe study involved cross-sectional and longitudinal data from a postal survey involving 16–22-year old Danes. The hypothesized associations were examined using hierarchical logistic regression analyses.ResultsAn inverse association between participating in leisure time physical activity and smoking was found. Participation in leisure time physical activity for friendship or competition reasons were conditions that strengthened the inverse association between physical activity and smoking in males. In contrast, participation for the reason of losing weight or gaining self-esteem appeared to weaken the inverse association among females. In addition, the motives enjoyment, health and, in females, friendships and stress relief were associated with less smoking irrespective of participation level, while the motives self-esteem, losing weight and, in males, friendships were unrelated or even positively related to smoking.ConclusionsThe association between adolescents' leisure time physical activity and smoking behavior differs with the underlying motivation for the activity.     

Learning to like or dislike by association: No need for contingency awareness

One way to learn to like or dislike a neutral target stimulus is through associations with positive or negative context stimuli. The present research investigates whether people need to be aware of the association between a target and a context stimulus (i.e., contingency aware) in order for associative learning of likes and dislikes to occur. We predicted that awareness of the association between context and target is necessary when target novelty is low, but not when target novelty is high. We conducted two experiments in which we varied target novelty and measured contingency awareness using a picture-bound recognition task. This allowed us to separately investigate evaluative conditioning for “contingency awareness” and “contingency unawareness” context–target pairs. The results show, as predicted, that awareness of the association between context and target is needed for low-novelty targets but not needed for high-novelty targets.     

The power of regression to the mean: A social norm study revisited

This research follows up on a study by Schultz et al. ( 2007 ), in which the effect of a social norm intervention on energy consumption was examined. The present studies included control groups to examine whether social norm effects would persist beyond regression to the mean. Both studies had a 2 (baseline consumption: below mean versus above mean) × 2 (message condition: no‐message control versus norm message) design . Based on baseline fruit ( Study 1 ) or unhealthy snack ( Study 2 ) consumption, students were classified as above mean or below mean for consumption. One week later, half of the students in the above‐mean and below‐mean groups received normative feedback; control groups did not. Neither study showed an effect of norm messages on behavior relative to control, providing evidence for regression to the mean as an alternative explanation. Findings highlight the importance of control groups to distinguish social norm intervention effects from mere regression to the mean.     

Providing worked examples for learning multiple principles

Worked examples support learning. However, if they introduce easy-to-confuse concepts or principles, specific ways of providing worked examples may influence their effectiveness. Multiple worked examples can be introduced blocked (i.e., several for the same principle) or interleaved (i.e., switching between principles), and can be sequentially or simultaneously presented. Crossing these two factors provides four ways of presenting worked examples: blocked/sequential, interleaved/sequential, blocked/simultaneous, and interleaved/simultaneous. In an experiment with university students (N = 174), we investigated how these two factors influence the acquisition of procedural and conceptual knowledge about different, but closely related (thus, easy-to-confuse) stochastic principles. Additionally, we assessed the ability of students to discriminate between principles with verification tasks. Simultaneous presentation benefitted procedural knowledge whereas, interleaved presentation benefitted conceptual knowledge. No significant differences were found for verification tasks. The results suggest that it is worthwhile to adapt the presentation of the worked examples to the learning goals.     

Modification of Hostile Interpretation Bias in Depression: A Randomized Controlled Trial

Interpretation Bias Modification (IBM) is gaining attention in the literature as an intervention that alters cognitive biases and reduces associated symptoms. Forty, primarily college-aged, non-treatment-seeking adults with major depressive disorder (MDD) were randomly assigned to receive either IBM targeting hostile interpretation bias (IBM-H) or a healthy video control (HVC) condition. Compared to those in HVC, participants in IBM-H reported more benign interpretations and fewer hostile interpretations at posttreatment. No difference in depressive interpretation bias was found between groups at posttreatment. IBM-H led to improved anger control at posttreatment and follow-up compared to HVC, though no effects of condition were found on trait anger or depressive symptoms. The IBM-H group perceived their treatment as less credible than the HVC group. For individuals with high expectancy of treatment success, IBM-H led to lower posttreatment depressive symptoms compared to HVC, while findings trended in the opposite direction for those with low expectancy of success. Overall, these preliminary findings point to boundary conditions for the efficacy of IBM protocols for anger and depression and potential improvements to be made to future IBM protocols.     

Ethical social justice: Do the ends justify the means?

This article offers an ethical decision‐making model, informed by community psychology values, as a means for guiding psychologists when engaging in social justice‐oriented work. The applicability of this model is demonstrated through a case analysis elucidating how America's psychologists individually and collectively arrived at the decision to endorse torture—ostensibly as a means for preventing terrorism. Critics have wondered how the American Psychological Association succumbed to these involvements, and how to prevent such ethical lapses in the future. Unfortunately, the American Psychological Association's ethical codes fail to provide explicit guidance for psychologists' involvement in social justice work that impacts communities and systems. To address this gap, we present a values‐driven, ethical decision‐making framework that may be used to guide psychologists' future practices. This framework infuses fundamental community psychology values (i.e., caring and compassion; health; self‐determination and participation, human diversity, social justice; and critical reflexivity) into a 9‐step model.