Post-event misinformation effects in a language-trained chimpanzee (Pan troglodytes)

Animal Cognition - Errors of source monitoring are widespread human memory challenges, and our memories are subject to distortion upon the presentation of subsequent misinformation. Less is known...     

Most People are Pretty Happy,but There is Cultural Variation: The Inughuit,The Amish,and The Maasai

Diener and Diener (1996; Psychological Science 7: 181–185) suggested that most people are happy, and offered support for this claim from surveys in industrialized societies. We extend their findings to include people who lead materially simple lives and live in cultures far removed from those of typical survey respondents. We found that the Kenyan Maasai, the United States Amish, and the Greenlandic Inughuit, all reported positive levels of life satisfaction, domain satisfaction, and affect balance (more frequent positive emotions than negative ones). Across satisfaction and affect measures, including methods in addition to global self-reports, our 358 respondents from these cultures were one average, positive on all 54 scales, and significantly above neutral on 53 of them. Across all measures and samples 84% of participants scored above neutral. However, nobody was perfectly happy and satisfied, and the groups reported unique configurations of satisfaction and affect. Although all three groups were high in satisfaction with so cial domains, the Amish reported lower satisfaction with self-related domains, and the Maasai and Inughuit were relatively lower in satisfaction with material domains. All three groups reported frequent positive emotions, but only the Maasai reported frequent feelings of pride. Thus, the fact that most people tend to be moderately happy does not mean that they are ecstatic, or that there is no variation across cultures in happiness.     

An evaluation of a three-component model of occupational commitment: dimensionality and consequences among United Kingdom human resource management specialists

This study evaluated the J. P. Meyer, N. J. Allen, and C. A. Smith (1993) model of occupational commitment using a sample of 678 United Kingdom human resource management specialists. Support was found for the 3-component model, and findings suggest that the consequences of the affective, normative, and continuance components differ. Affective and continuance commitment were negatively related to occupational withdrawal cognitions, whereas normative commitment was negatively related to withdrawal cognitions only when continuance commitment was low. Affective and, to a lesser extent. normative commitment were related to intention to participate in professional activities. Continuance commitment had no significant relationship with intention to participate in professional activities.     

Psychopathy scores predict adolescent inpatient aggression

This prospective study found that psychopathy scores predicted aggressive behavior among 72 adolescent psychiatric inpatients, even after controlling for age, sex, socioeconomic status, length of hospital stay, and independent self-report measures of impulsivity and conduct problems. Psychopathy was assessed within 3 days of hospital admission by clinical raters trained in the use of Hare's Psychopathy Checklist-Revised. Aggressive behavior was recorded by clinical staff members who were unaware of psychopathy ratings. Adolescents rated higher in psychopathy exhibited higher frequencies of both reactive and instrumental aggressive behavior than adolescents rated lower in psychopathy. Post hoc regression analyses revealed that psychopathy had incremental validity in predicting aggression beyond the contribution of clinical diagnosis or scores on the Millon Adolescent Clinical Inventory.     

Falsifying mental models: Testing the predictions of theories of syllogistic reasoning

Four experiments are reported that tested the claim, drawn from mental models theory, that reasoners attempt to construct alternative representations of problems that might falsify preliminary conclusions they have drawn. In Experiment 1, participants were asked to indicate which alternative conclusion(s) they had considered in a syllogistic reasoning task. In Experiments 2-4, participants were asked to draw diagrams consistent with the premises, on the assumption that these diagrams would provide insights into the mental representation being used. In none of the experiments was there any evidence that people constructed more models for multiple-model than for single-model syllogisms, nor was there any correlation between number of models constructed and overall accuracy. The results are interpreted as showing that falsification of the kind proposed by mental models theory may not routinely occur in reasoning.     

Teaching peer reinforcement and grocery words: An investigation of observational learning and instructive feedback

A multiple probe across behaviors design, replicated across participants, assessed the effectiveness of constant time delay in teaching appropriate peer reinforcement and grocery words to 3 elementary students with moderate intellectual disabilities. Additionally, pretests and posttests assessed the acquisition of the participants' observational learning (acquisition of peers' grocery words) and instructive feedback (related information supplied by the teacher in the consequent event). Results indicate that the participants learned (a) how to appropriately reinforce peers, (b) to read their grocery words, (c) some of the targeted stimuli of their peers, and (d) much of the instructive feedback that was associated with each of the grocery words. Maintenance data indicate that the participants maintained their target grocery words at high levels of accuracy.