Learning to categorize perceptually similar stimuli can result in people becoming more sensitive to differences along perceptual dimensions that are relevant to category membership and/or less sensitive to equivalent differences along irrelevant perceptual dimensions. These effects of acquired distinctiveness and acquired equivalence may be caused…

Feedback is highly contingent on behavior if it eventually becomes easy to predict, and weakly contingent on behavior if it remains difficult or impossible to predict even after learning is complete. Many studies have demonstrated that humans and nonhuman animals are highly sensitive to feedback contingency, but no known studies have examined how…

Three source-memory experiments were conducted with Spanish-English bilinguals and monolingual English speakers matched on age, education, nonverbal cognitive ability and socioeconomic status. Bilingual language proficiency and dominance were assessed using standardized objective measures. In Experiment 1, source was manipulated visuo-spatially,…

The fact that a significant amount of release from proactive interference was obtained with subjects in this study by shifting between differentially arousing categories of words suggested that rated word arousal is an encoding dimension in short-term memory. (CM)

Free associations to double-entendre sexual and asexual words were elicited from college males under conditions of sexual stimulation and no stimulation (control). Results indicated significant interaction between stimulation and guilt and sexuality-asexuality of words might be factor in recall errors of high-and low-sex-guilt Ss. (Author)

A new paradigm is presented for investigating how intervening concepts are learned. Results of four experiments involving 85 college students provide converging evidence for the acquisition of intervening concepts. A simple associative learning mechanism is proposed to account for the results. The new paradigm uses a stimulus-response-feedback…