Perceptions of insanity based on occupation of defendant and seriousness of crime

The purpose was to estimate the relationship between a defendant's stated intelligence on perceptions of his sanity and responsibility. This analog study was a 2 (occupation of defendant) x 2 (seriousness of outcome) between-subjects design. A scenario involving an insanity defense was read by 190 college students who then answered a 12-item questionnaire. The hypothesis that participants would attribute less responsibility to less intelligent defendants than to more intelligent ones was partially supported. Belief in a Just World moderated these evaluations. Seriousness of outcome influenced men's perceptions of the defendant's insanity, responsibility, and sentence, but not women's. Participants seemed to be more willing to accept the possibility that the defendant was insane if the outcome of his crime was not serious.     

The effect of monetary incentives on backward digit span performance

In order to determine if monetary-incentive effects, particularly the detrimental effects of such incentives on human learning and performance, might be mediated by anxiety, 52 college students were administered six backward digit trials in a preexperimental, baseline phase and six trials in an experimental, test phase. Of the 52 subjects, 26 were paid 50 cents following each correct recitation of a backward digit series during the test phase. The remaining 26 were unpaid control subjects. Results showed that the rationale for the study was correct because state anxiety was indeed negatively related to backward digit span performance as previous research had shown, but the offer of reward did not elevate state anxiety scores and, more importantly, the offer of reward led to a significant improvement in backward digit span performance—an effect which is the opposite of what would be predicted by the anxiety hypothesis. The reward effects of theoretical interest in planning this research were those facilitating and detrimental effects that are produced by offering elementary, high school, or college students small amounts of money (typically from $1 to $3) as a superfluous inducement to participate in a study of human learning or performance. The results of this study discredit any explanation of such reward effects which attributes the effects to reward-induced anxiety.     

Contributions of the Cognitive Approach to Political Psychology

The social cognition tradition has had a strong impact on political psychology scholarship in the last part of the 20th century. The purpose of this essay is to review the contributions of the cognitive approach in helping political psychologists to better understand how citizens think about the world of politics. I consider research concerned with both the mental structure or representation of information about the political world and research concerned with specifying the cognitive processes that produce political judgments and opinion, and conclude that political cognition scholarship has begun to live up to its promise. In the second part of the essay, I suggest a research agenda for the future, pointing to ten directions for extending the political cognition paradigm.     

Relationship Between Psychological Skill Profiles and Soldier Physical Fitness Performance

We examine the structure of soldier's psychological skills and assess the relationship between psychological skills profiles and physical performance with data from 427 soldiers from a Stryker Brigade. Exploratory factor analyses results provided empirical support for a three-factor structure that included foundation skills, psychosomatic skills, and cognitive skills. Cluster analysis revealed three emergent psychological skills profile groups: (a) strong skills, (b) weak skills, and (c) fearful focus clusters. Soldiers in the strong psychological skill profile group performed better than their peers in the other profile groups on the Army Physical Fitness Test (APFT) performance measure. We discuss the implications of our findings for theory, research, and practice.     

Further evidence for mixed emotions

Emotion theorists have long debated whether valence, which ranges from pleasant to unpleasant states, is an irreducible aspect of the experience of emotion or whether positivity and negativity are separable in experience. If valence is irreducible, it follows that people cannot feel happy and sad at the same time. Conversely, if positivity and negativity are separable, people may be able to experience such mixed emotions. The authors tested several alternative interpretations for prior evidence that happiness and sadness can co-occur in bittersweet situations (i.e., those containing both pleasant and unpleasant aspects). One possibility is that subjects who reported mixed emotions merely vacillated between happiness and sadness. The authors tested this hypothesis in Studies 1-3 by asking subjects to complete online continuous measures of happiness and sadness. Subjects reported more simultaneously mixed emotions during a bittersweet film clip than during a control clip. Another possibility is that subjects in earlier studies reported mixed emotions only because they were explicitly asked whether they felt happy and sad. The authors tested this hypothesis in Studies 4-6 with open-ended measures of emotion. Subjects were more likely to report mixed emotions after the bittersweet clip than the control clip. Both patterns occurred even when subjects were told that they were not expected to report mixed emotions (Studies 2 and 5) and among subjects who did not previously believe that people could simultaneously feel happy and sad (Studies 3 and 6). These results provide further evidence that positivity and negativity are separable in experience.     

Evidence of a detrimental effect of extrinsic incentives on breaking a mental set

College students were either rewarded ($1.50) or not for solving a series of 10 water-jar problems. The first 9 of these were designed to establish a set for a relatively complicated, three-jar solution (B ? A ? 2C). The 10th problem was a set breaker which required that subjects discover a simple (A-C) solution. The mental activities needed to produce a solution to the two types of problems (Problems 1 to 9 and Problem 10) were, therefore, different and one interest was in seeing whether reward would be detrimental for performance on both types of problems. It was not. Poorer reward group performance was obtained only on Problem 10. This result was not due to between-group differences in mathematical ability, and explanations in terms of differences in time taken to check answers or concern over quality of performance were considered and discounted. Measures of intrinsic interest (subject evaluations of the task and a measure of willingness to volunteer for future research) failed to support the belief that interest differences account for performance differences.     

不同年龄被試思維活动(心算)对脑电图的影响

就人类脑电图研究言,思維(心算)与脑电图的相关一直是許多研究者注意的一个問題。从生理心理(或精神生理)角度来看,有关大脑輸入(感觉)或輸出(运动)的知識比較丰富,但中枢过程的知識事实上尚頗空虛。例如思維等复杂意識活动的机能定位問題,自勃洛卡(Broca)后百年間始終意見分歧,截止目前仍然是一个国际間热烈爭論     

Taboo Trade‐Offs,Relational Framing,and the Acceptability of Exchanges

This article reports 4 experiments demonstrating the power of social‐relational framing to complicate superficially straightforward economic exchanges of goods and services. Drawing from Alan Fiske's theoretical framework as well as Tetlock's sacred value protection model, the experiments demonstrate (a) pricing distortions and refusals to answer certain questions when people contemplate buying or selling objects endowed with special relational significance; (b) moral outrage and cognitive confusion when people are asked whether they would allow market‐pricing norms to influence decisions that fall under the normative purview of communal‐sharing, authority‐ranking, and equality‐matching relationships; and (c) elements of tactical flexibility in how people respond to breaches of relational boundaries (a willingness to turn a blind eye to taboo trade‐offs when it is in their interest to do so). An agenda for future work is offered that explores how pragmatic, economic interests are balanced against the desire to be (or appear to be) the type of person who honors social–relational constraints on what should be considered fungible.     

Chromatic masking revealed by the standing wave of invisibility illusion

We have used the standing wave of invisibility illusion (Macknik and Livingstone, 1998 Nature Neuroscience 1 144-149) to examine the masking effects produced by a range of stimuli of varying chromatic and luminance contrast content. The pattern of masking was highly selective. Maximum effects were always obtained when the target and mask were identical in terms of their chromatic and/or luminance contrast composition, but were reduced as the angular separation in colour space between them was increased. Masking was of a monopolar nature, indicating the operation of rectified mechanisms selective for different combinations of colour and luminance contrast.     

The affective costs of overconfidence

Positive illusions, though often beneficial (Taylor & Brown, 1988 ), can diminish the pleasure of outcomes. This prediction follows from decision affect theory. We investigated this prediction by measuring the confidence that recreational basketball players felt while making shots and the pleasure they felt with subsequent outcomes. Results showed that most players were overconfident. Those who were more overconfident tended to experience less enjoyment with their outcomes. Using individual parameter estimates from decision affect theory, we estimated how each player would have felt if their self assessments had been accurate. For the vast majority, better calibration would have led to greater pleasure. In a second study, we randomly assigned players to a debiasing treatment condition or a control condition. Relative to the control players, debiased players were better calibrated and derived greater average pleasure from the task. Copyright © 2004 John Wiley & Sons, Ltd.