Toward a broader view of social stereotyping

Stereotyping effects are typically considered to be assimilative in nature: A member of a group stereotyped as having some attribute is judged to have more of that attribute than a member of some comparison group. This article highlights the fact that stereotyping effects can also occur in the direction of contrast--or even null effects-- depending on the nature and form of the outcome being assessed (from the researcher's perspective, the dependent variable of interest). Relying on theory and research from the shifting standards model (M. Biernat, M. Manis, & T. F. Nelson, 1991), this review highlights the different ways in which and the factors that determine how stereotypes influence judgment and behavior toward individual group members.     

Training play behavior in a 5-year-old boy with developmental disabilities

The purpose of the current study was twofold: (a) to investigate if it was possible to train three different games (both as a leader and as a participant) to a child with developmental disabilities through interaction with 4 typically developing peers, and (b) to examine if correct responding would be maintained after the training was faded. A multiple probe design across three games was used. The results showed that the child learned both skills as a leader and as a participant in all three games, and that skills were maintained for a period of 3 weeks after the training had stopped.     

Increasing safety-belt use in Spanish drivers: a field test of personal prompts

A variation of the ABAB experimental design was used to assess the impact of a verbal prompt on safety-belt use for those traveling by urban roads and highways in Spain. The personal prompt resulted in an increase (29.6%) in safety-belt use among drivers traveling on urban roads. This research shows that the impact of personal prompts can be generalized to cultures outside the United States.     

Psychological measures as predictors of military training performance

The predictive validity of 7 ability tests, the Big Five, and the Rorschach method administered to 71 male applicants at the Naval Special Forces (NSF) of Norway was evaluated based on pass/fail results in training. The findings showed: (a) small correlations between the ability tests, the Big Five scales, and the success criterion; (b) Rorschach variables measuring stress tolerance, reality testing, cognition, and social adjustment correlated significantly (r =.25 to.48) with pass/fail results in training, and (c) logistic regression analysis revealed that 3 of the Rorschach variables accumulated incrementally in the prediction of training completion when entered after the ability tests and the Big Five scales, thus supporting the merit of using Rorschach variables for predicting NSF training performance     

The ethical ideologies of psychologists and physicians: a preliminary comparison

The ethical ideologies of psychologists (who provide health services) and physicians were compared using the Ethics Position Questionnaire. The findings reveal that psychologists tend to be less relativistic than physicians. Further, we explored the degree to which physicians and psychologists report being influenced by a variety of factors (e.g., family views) in their ethical decision making. Psychologists were more influenced by their code of ethics and less influenced by family views, religious background, and peer attitudes than were physicians. We argue that these differences reflect the varied professional cultures in which practitioners are trained and socialized.     

Responding to deviance: target exclusion and differential devaluation

Two studies explored responses to ingroup deviance. Group-defining opinions of prowar Republicans (Study 1) and prolife Christians (Study 2) were challenged by either an ingroup or outgroup deviate. Participants evaluated the deviate and structured the boundaries of their ingroup in counterbalanced order. Of importance, boundary structuring allowed participants to exclude deviates from the ingroup. Consistent with previous research, ingroup deviates were devalued relative to out-group deviates, but only when target evaluation was participants' first response option. Participants excluded deviates from the boundaries of their ingroup irrespective of measure order, and doing so eliminated differential devaluation when exclusion was participants' first response option. Exclusion decreased liking for outgroup deviates in Study 1 and increased liking for ingroup deviates in Study 2. The findings suggest that devaluation is an attempt to exclude deviates from the ingroup and that doing so reduces the threat otherwise experienced.     

Rapid development of feature binding in visual short-term memory

The binding of object identity (color) and location in visual short-term memory (VSTM) was examined in 6.5- to 12.5-month-old infants (N= 144). Although we previously found that by age 6.5 months, infants can represent both color and location in VSTM, in the present study we observed that 6.5-month-old infants could not remember trivially simple color-location combinations across a 300-ms delay. However, 7.5-month-old infants could bind color and location as effectively as 12.5-month-old infants. Control conditions confirmed that the failure of 6.5-month-old infants was not a result of perceptual or attentional limitations. This rapid development of VSTM binding between 6.5 and 7.5 months occurs during a period of rapid increase in VSTM storage capacity and just after a period of dramatic neuroanatomical changes in parietal cortex. Thus, the ability to bind features and the ability to store multiple objects may both depend on a process that is mediated by posterior parietal cortex and is perhaps related to focused attention.     

Endogenous BDNF is required for long-term memory formation in the rat parietal cortex

Information storage in the brain is a temporally graded process involving different memory phases as well as different structures in the mammalian brain. Cortical plasticity seems to be essential to store stable long-term memories, although little information is available at the moment regarding molecular and cellular events supporting memory consolidation in the neocortex. Brain-derived neurotrophic factor (BDNF) modulates both short-term synaptic function and activity-dependent synaptic plasticity in hippocampal and cortical neurons. We have recently demonstrated that endogenous BDNF in the hippocampus is involved in memory formation. Here we examined the role of BDNF in the parietal cortex (PCx) in short-term (STM) and long-term memory (LTM) formation of a one-trial fear-motivated learning task in rats. Bilateral infusions of function-blocking anti-BDNF antibody into the PCx impaired both STM and LTM retention scores and decreased the phosphorylation state of cAMP response element-binding protein (CREB). In contrast, intracortical administration of recombinant human BDNF facilitated LTM and increased CREB activation. Moreover, inhibitory avoidance training is associated with a rapid and transient increase in phospho-CREB/total CREB ratio in the PCx. Thus, our results indicate that endogenous BDNF is required for both STM and LTM formation of inhibitory avoidance learning, possibly involving CREB activation-dependent mechanisms. The present data support the idea that early sensory areas constitute important components of the networks subserving memory formation and that information processing in neocortex plays an important role in memory formation.