Effects of pretraining intrastriatal administration of p-chloroamphetamine on inhibitory avoidance

Pretraining systemic administration of p-chloroamphetamine (PCA) consistently produces retention deficits of inhibitory avoidance. This drug causes a widespread acute release of serotonin from cerebral neuronal terminals, but it is not known where in the brain PCA exerts its disruptive cognitive effects. The present experiment was aimed at determining whether the striatum is a site of action of this drug. PCA (5 microg) was infused, bilaterally, into the striatum of rats at 30, 15, or 5 min before training of inhibitory avoidance, and retention of the task was measured 24 h later. An inversely related time-dependent deficit was found. Together with the results from appropriate control groups, this result strongly suggest that systemic PCA produces its reported cognitive effects, at least in part, through its pharmacological action within the striatum.     

Visual encoding of patterns is subject to dual-task interference

Two stimuli were presented at varying stimulus onset asynchronies (SOAs), with each stimulus associated with a distinct task. The first stimulus was a tone at one of either two or three frequencies. In two conditions, the task associated with a tone was either a speeded two-alternative discrimination (2AD), or a speeded three-alternative discrimination (3AD) based on the pitch of the tone. In a third condition, subjects were told to ignore the tone. The second stimulus was a briefly exposed study matrix of red and black squares followed by a mask. After a fixed delay, the mask was replaced by a test matrix that was either the same or different from the study matrix. The task associated with the matrices was to indicate, with no speed pressure, whether the study matrix and the test matrix were the same or different. Results from each speeded AD condition showed that subject's accuracy in the matrix task decreased as the SOA between the tone and the study matrix decreased. This effect was larger for the 3AD tone task than with a 2AD tone task. In addition, within each speeded AD condition, longer RTs in the tone task were associated with lower accuracy in the matrix task. None of these effects was evident when the subjects were told to ignore the tone. These results suggest that encoding visual information can be subject to significant capacity limitations imposed by cross-modal multitasking.     

A 32-society investigation of the influence of perceived economic inequality on social class stereotyping

There is a growing body of work suggesting that social class stereotypes are amplified when people perceive higher levels of economic inequality—that is, the wealthy are perceived as more competent and assertive and the poor as more incompetent and unassertive. The present study tested this prediction in 32 societies and also examines the role of wealth-based categorization in explaining this relationship. We found that people who perceived higher economic inequality were indeed more likely to consider wealth as a meaningful basis for categorization. Unexpectedly, however, higher levels of perceived inequality were associated with perceiving the wealthy as less competent and assertive and the poor as more competent and assertive. Unpacking this further, exploratory analyses showed that the observed tendency to stereotype the wealthy negatively only emerged in societies with lower social mobility and democracy and higher corruption. This points to the importance of understanding how socio-structural features that co-occur with economic inequality may shape perceptions of the wealthy and the poor.     

Error monitoring is related to processing internal affective states

Detecting behavioral errors is critical for optimizing performance. Here, we tested whether error monitoring is enhanced in emotional task contexts, and whether this enhancement depends on processing internal affective states. Event-related potentials were recorded in individuals with low and high levels of alexithymia—that is, individuals with difficulties identifying and describing their feelings. We administered a face word Stroop paradigm (Egner, Etkin, Gale, & Hirsch, 2008) in which the task was to classify emotional faces either with respect to their expression (happy or fearful; emotional task set) or with respect to their gender (female or male; neutral task set). The error-related negativity, a marker of rapid error monitoring, was enhanced in individuals with low alexithymia when they adopted the emotional task set. By contrast, individuals with high alexithymia did not show such an enhancement. Moreover, in the high-alexithymia group, the difference in the error-related negativities between the emotional and neutral task sets correlated negatively with difficulties identifying their own feelings, as measured by the Toronto Alexithymia Scale. These results show that error-monitoring activity is stronger in emotional task contexts and that this enhancement depends on processing internal affective states.     

Superstitious behavior in sport: A literature review

The objective of this first literature review, in this area, is to unveil the current status of knowledge on superstition in sport. Its outcome reveals that superstitious behaviors vary with the type of sport, athletic level, as well as athletic role. In agreement with past theories, they increase with the level of challenge, as reflected by the importance of the competition, as well as with the level of uncertainty. Cultural factors, in conjunction with the education level, as well as gender, have a strong influence on superstitious behaviors in sports. Based on current thoughts, religiosity and superstition are different psychological constructs used as psychological aids by several athletes. Personality factors appear to mediate the manifestation of the behavior. Elite athletes are clearly more superstitious than non‐elite athletes, An interaction between athletic skill and task‐difficulty emerges to be another strong predictor of superstition in sport. It is evident that a set of complex personal and situational factors interact in the manifestation of superstitious behavior in sport that is used for the regulation of emotions in a quest for optimal performance. It is concluded that the objective benefits (i.e., success) of superstition in sport may be ascribed to the placebo effect that yields an increased sense of control and mental reassurance in unpredictable contest situations.     

Exploring the Structure of Adolescent Problem Behaviors and the Associated Adult Outcomes

This study expands on previous research on adolescent problem behaviors by examining whether different constellations of problem behavior in adolescence differentially impact outcomes during emerging adulthood. Data from the in-home interviews of waves 2 and 3 of the National Longitudinal Study of Adolescent Health (Add Health) were used to examine these relationships. Latent class analysis, using nineteen problem behaviors measured at wave 2, identified three classes of adolescents representing “low risk, abstainers,” “sexually-active, experimenters,” and a “high risk, diverse behavior” group. Multivariate logistic regression analyses were then used to identify class differences (measured at wave 3) in social stability, general health and service utilization, and criminal justice system involvement during emerging adulthood. Important class differences in the likelihood of negative outcomes during early adulthood were identified. The implications of these findings and suggestions for future research are discussed.     

Teaching and Cultural Otherness

This work focuses on the relational dimension of the encounter between teacher and students meant as a structural element for teaching practice. By using theoretical group-analytical and anthropo-analytical coordinates, the authors psychodynamically problematize some relational conditions that may influence learning. This research concentrates on the circumstances that limit and allow the birth of a group arrangement capable to learn from experience, rather than on a perspective to teach-learn in a perfect agreement with planning. Intercultural education is pointed out and located as a horizon and ideal term to guide educational practice.     

Tiger salamanders’ (<Emphasis Type="Italic">Ambystoma tigrinum</Emphasis>) response learning and usage of visual cues

We explored tiger salamanders’ (Ambystoma tigrinum) learning to execute a response within a maze as proximal visual cue conditions varied. In Experiment 1, salamanders learned to turn consistently in a T-maze for reinforcement before the maze was rotated. All learned the initial task and executed the trained turn during test, suggesting that they learned to demonstrate the reinforced response during training and continued to perform it during test. In a second experiment utilizing a similar procedure, two visual cues were placed consistently at the maze junction. Salamanders were reinforced for turning towards one cue. Cue placement was reversed during test. All learned the initial task, but executed the trained turn rather than turning towards the visual cue during test, evidencing response learning. In Experiment 3, we investigated whether a compound visual cue could control salamanders’ behaviour when it was the only cue predictive of reinforcement in a cross-maze by varying start position and cue placement. All learned to turn in the direction indicated by the compound visual cue, indicating that visual cues can come to control their behaviour. Following training, testing revealed that salamanders attended to stimuli foreground over background features. Overall, these results suggest that salamanders learn to execute responses over learning to use visual cues but can use visual cues if required. Our success with this paradigm offers the potential in future studies to explore salamanders’ cognition further, as well as to shed light on how features of the tiger salamanders’ life history (e.g. hibernation and metamorphosis) impact cognition.     

A Short Form of the Portuguese Version of the Youth Self-Report

The youth self-report (YSR), which is theoretically based in the field of developmental psychopathology and follows a dimensional approach, is an important instrument to assess the behavioral and emotional problems and the psychosocial competencies of adolescents between the ages of 11 and 18 years in both clinical and research contexts. Our main aims were to propose a short form of the YSR, conduct a first validation study, and compare the short-form YSR with the full version of the Portuguese YSR. We conducted the first study (Study 1) in a sample of 1,266 Portuguese community adolescents between the ages of 11 and 21 years to analyze the factor structure of the YSR. We conducted the second study (Study 2) in a sample of 302 community adolescents between the ages of 11 and 21 years to validate the factor structure of the short form of the YSR, which consisted of 33 items that focused on the dimensions of internalization-depression, internalization-anxiety, externalization-destructiveness and externalization-exhibitionism. Our findings confirmed that the YSR-SF provides a good fit to the data, explains similarly the variance on several criteria compared with the longer version, and is sensitive to sex and age differences.     

New Voices for Expressive Pragmatism: Bridging the Divide between Pragmatism and Perfectionism

This article explores the theme of moral rationality by examining two distinct philosophical approaches, those of perfectionism and pragmatism broadly construed. It does this by comparing Cora Diamond's reading of J. M. Coetzee's novel The Lives of Animals with an imaginary reading of the same novel tuned to a moral sensibility closer to Deweyan pragmatism. By comparing a real account with an imaginary one, the article intends to press Diamond's perfectionist understanding of problematic moral experience into confrontation with a pragmatist account of the same phenomenon. This reading becomes the starting point for a broader confrontation between two larger philosophical conceptions: perfectionism and pragmatism. By this comparison, the article means to extend a dialogue begun more than a century ago, showing in particular that integrating both perspectives within a common moral epistemology provides new insights into our understanding of moral experience. The general claim is that their differences notwithstanding, perfectionism and pragmatism share a common moral sensibility, although they part ways on some decisive issues that the article makes explicit.