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Social and Behavioral Sciences Commons™
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Articles 1 - 3 of 3
Full-Text Articles in Social and Behavioral Sciences
The Control Of Posture In Newly Standing Infants Is Task-Dependent, Laura J. Claxton, Dawn Melzer, Jyoong Hyun Ryu, Jeffrey M. Haddad
The Control Of Posture In Newly Standing Infants Is Task-Dependent, Laura J. Claxton, Dawn Melzer, Jyoong Hyun Ryu, Jeffrey M. Haddad
Psychology Faculty Publications
The postural sway patterns of newly standing infants were compared under two conditions: standing while either holding or not holding a toy. Infants exhibited a lower magnitude of postural sway and more complex sway patterns when holding the toy. These changes suggest infants adapt postural sway in a manner that facilitates visually fixating on and stabilizing the toy in their hand. When simply standing, infants exhibited postural sway patterns that appeared to be more exploratory in nature. Exploratory sway patterns may allow infants to learn the affordances of their new standing posture. These results demonstrate newly standing infants are capable …
Stress Alters The Discriminative Stimulus And Response Rate Effects Of Cocaine Differentially In Lewis And Fischer Inbred Rats, Therese A. Kosten, Mindy Miserendino
Stress Alters The Discriminative Stimulus And Response Rate Effects Of Cocaine Differentially In Lewis And Fischer Inbred Rats, Therese A. Kosten, Mindy Miserendino
Psychology Faculty Publications
Stress enhances the behavioral effects of cocaine, perhaps via hypothalamic-pituitary-adrenal (HPA) axis activity. Yet, compared to Fischer 344 (F344) rats, Lewis rats have hyporesponsive HPA axis function and more readily acquire cocaine self-administration. We hypothesized that stress would differentially affect cocaine behaviors in these strains. The effects of three stressors on the discriminative stimulus and response rate effects of cocaine were investigated. Rats of both strains were trained to discriminate cocaine (10 mg/kg) from saline using a two-lever, food-reinforced (FR10) procedure. Immediately prior to cumulative dose (1, 3, 10 mg/kg cocaine) test sessions, rats were restrained for 15-min, had 15-min …
How Selective Is Social Learning In Dolphins?, Stan A. Kuczaj Ii, Deirdre Yeater, Lauren Highfill
How Selective Is Social Learning In Dolphins?, Stan A. Kuczaj Ii, Deirdre Yeater, Lauren Highfill
Psychology Faculty Publications
Social learning is an important aspect of dolphin social life and dolphin behavioral development. In addition to vocal social learning, dolphins discover behaviors for foraging, play, and social interactions by observing other members of their social group. But dolphins neither indiscriminately observe nor mindlessly mimic other dolphins. To the contrary, dolphin calves are quite selective in their choices of who to observe and/or imitate. Calves are most likely to learn foraging behaviors from their mothers, but they are more likely to watch and reproduce the play behaviors of other calves than the play behaviors of adult dolphins (including their mothers). …