Costly exploration produces stereotypes with dimensions of warmth and competence.

Traditional explanations for stereotypes assume that they result from deficits in humans (ingroup-favoring motives, cognitive biases) or their environments (majority advantages, real group differences). An alternative explanation recently proposed that stereotypes can emerge when exploration is costly. Even optimal decision makers in an ideal environment can inadvertently form incorrect impressions from arbitrary encounters.

Validating a brief measure of four facets of social evaluation.

Five studies (N = 7972) validated a brief measure and model of four facets of social evaluation (friendliness and morality as horizontal facets; ability and assertiveness as vertical facets). Perceivers expressed their personal impressions or estimated society's impression of different types of targets (i.e.

Long-Term Effect of a Tablet-Based Cognitive Behavioral Group Intervention on Step Count, Fatigue, Self-Efficacy, and Quality of Life in Older Adults With Arthritis: A Pilot Study.

Purpose: To evaluate the long-term effect of a tablet-based, cognitive-behavioral group intervention (Tab-G) to improve daily walking for older adults with arthritis.

Method: Using an experimental pretest/posttest repeated measure design, long-term effects on step count, fatigue, self-efficacy, and quality of life (QOL) were investigated.

Results: Results of repeated measures analysis of variance showed significant improvement in step counts (F[1, 37] = 4.