Working harder with the out-group: The impact of social category diversity on motivation gains

This paper examines the influence that social category diversity (i.e., working with an in-group or out-group member) has on individual levels of motivation. The results of two experiments provide evidence that individuals increase their effort more when being outperformed by an out-group instead of an in-group member (Experiment 1), but only when the potential for social comparison is present (Experiment 2). We discuss the implications of this research for understanding how and why social category diversity may impact individual levels of motivation.     

A THEORY OF OBJECTIVE CHANCE

Abstract: Objective probability, or objective chance, is the probability of some event occurring in the future independent of what anyone thinks. This paper presents and defends a theory of objective chance. I develop an informal analysis of objective chance, taking the common sense picture underlying our talk about the likelihood of future events as our starting point. A formal semantics is introduced, and I argue that the theory presented satisfies certain criteria of adequacy for a theory of probability.     

Profiles of psychological well‐being in a sample of Australian university students

The present study identified psychological well‐being profiles in a sample of Australian university students (N = 207, Mean age = 30.16 years; SD = 11.90). Respondents completed two measures: Ryff's (1989) Psychological Well‐Being (PWB) scale and Lovibond and Lovibond's (2002) Depression, Anxiety and Stress Scales‐21 (DASS‐21) assessing their levels of PWB and depression. Latent profile analysis was applied to six indices of positive functioning derived from PWB scale: self‐acceptance, purpose in life, environmental mastery, positive relations with others, personal growth and autonomy. An optimal 5‐profile solution, reflecting significant incremental shifts from very low to very high PWB, was interpreted. As predicted, profile membership distinguished participants on depression. Importantly, profiles indicating moderate to very high PWB, particularly with the presence of above average autonomy, reported significantly lower levels of depression. Our results suggest prevention of, and treatment efficacy for, mental health problems may be improved by incorporating strategies that address positive functioning attributes, particularly associated with a sense of autonomy.     

Sympathy for the Error Theorist: Parfit and Mackie

Derek Parfit claims that “Williams and Mackie…do not use the normative concepts that I and other Non-Naturalists use.” Whatever we think of Parfit’s interpretation of Williams, his interpretation of Mackie should be rejected. For understandable historical reasons, Mackie’s texts are ambiguous. But if we apply to the interpretation of Mackie the same principle of charity Parfit employs in interpreting Williams, we find decisive reason to interpret Mackie as using the same normative concepts as Non-Naturalists.     

A Systematic Review and Psychometric Evaluation of Adaptive Behavior Scales and Recommendations for Practice

Adaptive behavior scales are vital in assessing children and adolescents who experience a range of disabling conditions in school settings. This article presents the results of an evaluation of the design characteristics, norming, scale characteristics, reliability and validity evidence, and bias identification studies supporting 14 norm-referenced, informant-based interviews and rating scales designed to measure adaptive behaviors. To derive these results, the manuals for each of these scales were reviewed using a standardized coding procedure, and information about each scale was double-coded by reviewers. Findings reveal that several evidence-based adaptive behavior scales are available to school psychologists. Concluding recommendations address selection and use of adaptive behavior scales as part of a comprehensive assessment, using the optimal methods of administration of adaptive behavior scales, and interpreting resultant scores that have demonstrated the highest levels of reliability and the largest body of validity evidence.