Counterfactual syllogistic reasoning in normal 4-year-olds, children with learning disabilities, and children with autism

Instruction encouraging imagery improves logical reasoning with counterfactual premises by normal preschool children. In contrast, children with autism have been reported to reason accurately with counterfactual premises in the absence of such instruction (F. J. Scott, S. Baron-Cohen, & A. M. Leslie, 1999). To investigate this pattern of findings, we compared the performance of children with autism, children with learning disabilities, and normally developing 4-year-olds, who were given reasoning problems both with and without instruction in two separate testing sessions 2 to 3 weeks apart. Overall, instruction to use imagery led to persistent logical performance. However, children with autism displayed a distinctive pattern of responding, performing around chance levels, showing a simple response bias, and rarely justifying their responses by elaborating on the premises. We propose that instruction boosts logical performance by clarifying the experimenter's intention that a false proposition be accepted as a basis for reasoning and that children with autism have difficulty grasping this intention.     

Contextual control over conditioned responding in a latent inhibition paradigm

We used 1-, 2-, and 3-context designs to study the control exerted by contexts over freezing in rats exposed to a conditioned stimulus (CS) in advance of its pairing with a shock unconditioned stimulus. The latent inhibition observed when preexposure, conditioning, and testing occurred in the same context was attenuated if preexposure occurred in a different context to conditioning and testing. Latent inhibition (i.e., attenuated performance) was restored in a CS-specific manner if preexposure and testing occurred in the same context and conditioning in a different one. Latent inhibition was also reduced by a long retention interval but remained specific for a particular context-CS relation. Finally, CS preexposure resulted in contextual control over the expression of excitatory conditioned performance. The results are discussed in terms of memory, associative, and associative-performance models of CS-preexposure effects.     

Cultural orientation, family cohesion, and family support in suicide ideation and depression among African American college students

This study extends previous research by examining the role of communalism, family cohesion, and family support in suicide ideation and depression in African American college students. Participants were 188 African American introductory psychology students (126 female, 61 male) from a historically black college. (1) Results showed that communalism, family cohesion, and family support were positively associated with each other. Higher levels of family cohesion and family support were associated with lower levels of suicide ideation and depression. Linear regression analyses showed a main effect for communalism and family support. Having strong communal values was positively related to suicide ideation and depression. Having strong family support was associated with fewer experiences of suicide ideation and depression. Stepwise regression analyses indicated that family support explained more variance in suicide ideation and depression than family cohesion. Implications of these results for future research and practice are discussed.     

Taking offense: effects of personality and teasing history on behavioral and emotional reactions to teasing

This study investigated how global personality traits and teasing history are related to participants' emotional and behavioral reactions to an actual teasing event. College undergraduates (N = 108) worked on a task with a same-sex confederate. While interacting, the confederate either teased participants about how slowly they were working on the task or made a benign comment about the nature of the task. Analyses revealed that even mild teasing can generate negativity towards the teaser and interaction. More interestingly, however, personality moderated reactions to teasing, as teasing condition interacted with each of the Big Five personality domains in theoretically meaningful ways. Childhood teasing history also moderated reactions to teasing, as frequent victims and frequent teasers responded in different ways.     

Cues to deception

Do people behave differently when they are lying compared with when they are telling the truth? The combined results of 1,338 estimates of 158 cues to deception are reported. Results show that in some ways, liars are less forthcoming than truth tellers, and they tell less compelling tales. They also make a more negative impression and are more tense. Their stories include fewer ordinary imperfections and unusual contents. However, many behaviors showed no discernible links, or only weak links, to deceit. Cues to deception were more pronounced when people were motivated to succeed, especially when the motivations were identity relevant rather than monetary or material. Cues to deception were also stronger when lies were about transgressions.     

Individual differences in children's emotion understanding: effects of age and language

Over the last two decades, it has been established that children's emotion understanding changes as they develop. Recent studies have also begun to address individual differences in children's emotion understanding. The first goal of this study was to examine the development of these individual differences across a wide age range with a test assessing nine different components of emotion understanding. The second goal was to examine the relation between language ability and individual differences in emotion understanding. Eighty children ranging in age from 4 to 11 years were tested. Children displayed a clear improvement with age in both their emotion understanding and language ability. In each age group, there were clear individual differences in emotion understanding and language ability. Age and language ability together explained 72% of emotion understanding variance; 20% of this variance was explained by age alone and 27% by language ability alone. The results are discussed in terms of their theoretical and practical implications.     

Worksite intervention model for facilitating changes in physical activity, fitness, and psychological parameters

The purpose was to examine the effectiveness of a physical activity intervention which combined behavior-change strategies with a variety of physical activities for 30 sedentary adults in a 12-wk. intervention that included behavior-change strategy sessions and supervised physical activity. Before and after the intervention, psychological and physiological variables were measured. Statistically significant changes right after the intervention included (1) an increase in physical activity participation, (2) an increase in muscular endurance, flexibility, and predicted VO2 max, and (3) a decrease in the number of barriers to physical activity. Changes in physical self-perception, a psychological variable often linked to increased physical activity, were not statistically significant, but effect sizes were large. The use of behavior-change strategies in conjunction with a variety of physical activities may be useful in improving physical and psychological well-being in previously sedentary adults. Stability of change requires study.     

Explicit and implicit processes in multicue judgment

In two experiments, a multicue probability learning task was used to train participants in relating judgments to a criterion, on the basis of several cues that could or could not be relevant. The outcome feedback had 25% added noise to simulate real-world experience-based learning. Judgmental strategies acquired were measured by individual multiple linear regression analyses of a test phase (with no feedback) and were compared with self-ratings of cue relevance. In a third experiment, participants were instructed explicitly on cue relevance, with no training phase. The pattern of results suggested that both implicit and explicit cognitive processes influenced judgments and that they may have been sensitive to different task manipulations in the learning phase. On more complex tasks, despite weak explicit learning, explicit processes continued to influence judgments, producing a decrement in performance. These findings explain why studies of expert judgment often show only moderate levels of self-insight, since people have only partial access to the processes determining their judgments.