Accuracy, confidence, and calibration: how young children and adults assess credibility

Do children and adults use the same cues to judge whether someone is a reliable source of information? In 4 experiments, we investigated whether children (ages 5 and 6) and adults used information regarding accuracy, confidence, and calibration (i.e., how well an informant's confidence predicts the likelihood of being correct) to judge informants' credibility. We found that both children and adults used information about confidence and accuracy to judge credibility; however, only adults used information about informants' calibration. Adults discredited informants who exhibited poor calibration, but children did not. Requiring adult participants to complete a secondary task while evaluating informants' credibility impaired their ability to make use of calibration information. Thus, children and adults may differ in how they infer credibility because of the cognitive demands of using calibration.     

Sleep quality in healthy and mood-disordered persons predicts daily life emotional reactivity

Disordered sleep has been linked to impaired emotional functioning in healthy and depressed individuals. Little is known, however, about how chronic sleep problems influence emotional reactivity in everyday life. Participants with major or minor unipolar depressive disorder (n?=?60) and healthy controls (n?=?35) reported on sleep and emotional responses to daily life events using a computerised Experience Sampling Method. We examined whether impaired sleep quality influenced emotional reactivity to daily events, and if this relationship was altered by unipolar mood disorders. Among healthy individuals, sleep difficulties were associated with enhanced negative affect (NA) to unpleasant events and a dulled response to neutral events. However, among mood-disordered persons, sleep difficulties were associated with higher NA across all types of everyday life events. Impaired sleep quality differentially affects daily life emotional reactions as a function of depression.     

Episodic and semantic memory influences on picture naming in Alzheimer's disease

This study investigated the relationship between semantic and episodic memory as they support lexical access by healthy younger and older adults and individuals with Alzheimer's disease (AD). In particular, we were interested in examining the pattern of semantic and episodic memory declines in AD (i.e., word-finding difficulty and impaired recent memory) vis-à-vis more preserved remote memories. We administered a picture naming task in which the episodic period of the pictures and whether the pictured items were unique to one period or commonly used across periods were varied. Groups of younger adults (N=40), healthy older adults (N=20) and older adults with AD (N=18) were asked to name drawings of objects in four conditions: dated unique, contemporary unique, dated common, and contemporary common. The results indicated that all participants named items that were common to both episodic periods more successfully than items unique to one period. An interaction was observed such that the healthy older and AD groups were more successful in retrieving names of objects presented in the dated compared to contemporary unique conditions, whereas the younger adults showed the reverse pattern. These results indicate that naming ability is affected both by the cumulative frequency of using an item over a lifetime and by when an item was first acquired. The findings support a theoretical stance which proposes an enduring reciprocal link between semantic and episodic memory. This theoretical relationship has practical implications for the development of intervention strategies when interacting with persons who have AD.     

Evaluation in constitutional law: An application to the first amendment

This article argues that program evaluation data may be useful to the courts when they are deciding First Amendment constitutional law disputes. Specifically, we focus on how program evaluation data, quantitative and qualitative, may be dispositive in dealing with two types of First Amendment cases—pornography and commercial speech. The different evaluative approaches that are warranted with each type of case are compared and contrasted. The different possible legal routes that program evaluation data may take to influence the outcome of constitutional law disputes determines the empirical type of approach to be utilized. Where pornography cases lend themselves more to social science data being used in trials, cases of commercial speech are more likely to use data at the appellate level. Social scientists interested in conducting legally relevant research should structure their research accordingly.     

Attitudes Toward Interracial Dating: Effects of Age,Sex, and Race

Attitudes toward interracial dating were investigated by surveying 400 individuals from an integrated community. As predicted, men were more positive than women, the young were more positive than the old, and Caucasian Americans were somewhat more positive than African Americans in their attitudes.     

Listeners' reactions to mild misarticulation of /l/

Adult listeners heard a 98-word recording of a speaker producing either normal speech, speech containing a single instance of a w/l substitution, or speech containing 10 instances of a w/l substitution. They rated the speaker on 13 bipolar scales, representing three dimensions of judgment. Findings suggest that even a single misarticulation of /l/ was sufficient to generate a negative impression on the dimension of evaluation. Speech with only a single misarticulation was rated as no different from normal speech on dimensions of activity and potency.     

Sex-role development and parental expectations among disturbed adolescent males.

Seventeen pre-delinquent, 17 mixed psychiatric, and 17 normal adolescents and their parents were compared for the possession of certain personality traits traditionally classified as masculine or feminine. The parents were also compared in regard to the characteristics they expected their sons to possess. The main findings centered around three personality traits that differentiated the adolescents, and also between the expectations of both the mothers and fathers. In general, the parents of the normal adolescents expected their sons to be more achieving, dominating, and enduring than the parents of the other adolescents, which is consistent in regard to the personality traits that differentiated the adolescents from each other. The results suggest that the possession of certain traits, such as dominance and endurance, appear to be important for adequate functioning in adolescent males.     

Children's performance in simple and successive-reversal concept identification problems

In Experiment I sixth-grade children learned two concept identification (CI) problems, a simple and a successive-reversal problem, either sequentially (Se) or concurrently (Con). Retention tests given during the CI problems indicated no significant differences in stimulus or response retention for any of the conditions. CI performance was poorer in the Con condition than in the Se condition. Contrary to adult data and predictions derived from the Bower and Trabasso (1964) model, there were fewer informed errors in the successive-reversal problem than the simple problem.