Stereotype validation and intellectual performance: Negative implications for future achievement

Previous research has found that activating negative stereotypes after completion of a task can lead people to feel more certain that they performed poorly (i.e., stereotype validation). The current research examined the implications that stereotype validation may hold for future performance. In two studies, the accessibility of gender stereotypes was manipulated after participants completed an initial test on a topic. After reporting perceptions of their performance, participants completed a follow-up test on the same subject. Consistent with hypotheses, activating negative stereotypes after the initial test was found to increase certainty in negative performance evaluations among stigmatized participants. Importantly, this higher certainty – triggered by stereotypes – predicted decreased performance on the later, follow-up test.     

Peers influence adolescent reward processing,but not response inhibition

Most adolescent risk taking occurs in the presence of peers. Prior research suggests that peers alter adolescents’ decision making by increasing reward sensitivity and the engagement of regions involved in the processing of rewards, primarily the striatum. However, the potential influence of peers on the capacity for impulse control, and the associated recruitment of the brain’s control circuitry, has not yet been adequately examined. In the current study, adolescents underwent functional neuroimaging while they completed interleaved rounds of risk-taking and response-inhibition tasks. Social context was manipulated such that the participants believed they were either playing alone and unobserved, or watched by an anonymous peer. Compared to those who completed the tasks alone, adolescents in the peer condition took more risks during the risk-taking task and exhibited relatively heightened activation of the striatum. Activity within this striatal region also predicted individual differences in overall risk taking. In contrast, the presence of peers had no effect on behavioral response inhibition and had minimal impact on the engagement of typical cognitive control regions. In a subregion of the anterior insula engaged mutually by both tasks, activity was again found to be sensitive to social context during the risk-taking task, but not during the response-inhibition task. These findings extend the evidence that the presence of peers biases adolescents towards risk taking by increasing reward sensitivity rather than disrupting cognitive control.     

Cognitive load effects on early visual perceptual processing

Contrast-based early visual processing has largely been considered to involve autonomous processes that do not need the support of cognitive resources. However, as spatial attention is known to modulate early visual perceptual processing, we explored whether cognitive load could similarly impact contrast-based perception. We used a dual-task paradigm to assess the impact of a concurrent working memory task on the performance of three different early visual tasks. The results from Experiment 1 suggest that cognitive load can modulate early visual processing. No effects of cognitive load were seen in Experiments 2 or 3. Together, the findings provide evidence that under some circumstances cognitive load effects can penetrate the early stages of visual processing and that higher cognitive function and early perceptual processing may not be as independent as was once thought.     

Indexing space and time in film understanding

We investigated the extent to which understanders monitor shifts in time and space during film comprehension. Participants viewed a feature‐length film and identified those points in the film in which they perceived a change in situation. We performed an a priori analysis of the films to identify the shifts in time, the movement of characters, and region. The relationship between the theoretical analysis of the films and the participants judgements of situational change was assessed. The results provide support for the Event Indexing Model and suggest that situation models for filmed events are indexed along multiple dimensions of situational continuity. Furthermore, the pattern of results was similar for narrative film as they are for narrative text. This finding suggest that there are general mechanisms for event understanding that operate independently of medium or mode of experience. Copyright © 2001 John Wiley & Sons, Ltd.     

Eliminating invalid self-report survey data.

A sample of 6,370 students in Grades 6 to 8 completed a questionnaire on their attitudes and use of alcohol, tobacco, and other drugs. A subsample showed questionable data based on three criteria: missing responses, invalid responses, and inconsistent responses. Analysis indicated that this subsample was significantly different from the main group on demographic variables and self-reported life-time tobacco use. Results support efforts to identify and eliminate invalid data.     

The Effect of Self‐Identified Sexual Orientation on Helping Behavior in a British Sample: Are Lesbians and Gay Men Treated Differently?

In a British sample, the wrong-number technique was used to examine levels of helping behavior shown toward lesbians and gay men. A wrong-number telephone call, from either a man who self-identified as gay or heterosexual, or a woman who self-identified as either lesbian or heterosexual, was made to 232 men and women. The caller requested help by asking the respondent to relay a message to his or her partner by telephone. As predicted, lesbians and gay men were less likely to be given help than were their same-gender heterosexual counterparts. However, lesbians were given a similar amount of help as were heterosexual men. Male participants were less likely to give help to gay men than to lesbians, but female participants were no less likely to help lesbians than gay men. The results suggest that, although lesbians and gay men meet discrimination in everyday life, the level of discrimination may differ.     

When time stands still: fear-specific modulation of temporal bias due to threat

The current study was designed to test the fear-specific nature of temporal bias due to threat. A temporal bisection procedure was used in which participants (N = 46) were initially trained to recognize short (400 ms) and long (1,600 ms) standard durations. In the test phase, participants were asked to judge whether the duration of computer-generated faces drawn to appear threatening, fearful, and neutral, was closer to either the short or long duration they had learnt earlier. Past research was replicated-the durations of the arousing facial expressions were overestimated relative to a low arousal (neutral) expression. Overestimation for threat was positively correlated with individual differences in fearfulness, trait anxiety, and distress. Multiple regression analyses were carried out to test the hypothesis was that individual differences in anxiety and fearfulness but not other traits would uniquely predict temporal overestimation due to threat. The results showed that fearfulness but not other traits (trait anxiety, anger, distress, activity, and sociability) was a unique and strong (partial r = .47) predictor of increased overestimation for both threatening and fearful expressions. The findings support the hypothesis that threat-related expressions activate a fear-specific system (?hman & Mineka, 2001) or fear representations (Beck & Clark, 1997) in fearful individuals.