Accession Number : AD0740381

Title :   Effects of Drive Level upon Differentiation of Response Force.

Descriptive Note : Bachelor's thesis,

Corporate Author : PRINCETON UNIV N J DEPT OF PSYCHOLOGY

Personal Author(s) : Ensminger,W. Douglas

Report Date : APR 1966

Pagination or Media Count : 63

Abstract : Five groups of rats were trained to press an isometric manipulandum and were rewarded with a 20 mg. pellet on responses meeting or exceeding an 8.0 gm. force criterion. All groups were run under 24 hr. food deprivation with different drive levels determined by prefeeding of 0, 3, 6, 9, or 12 gms. The major findings are: (1) mean and median peak force of responding, as well as standard deviation of the mean, are U-shaped functions of amount of prefeeding during acquisition, with the lowest levels occuring at an intermediate drive level; (2) gain is an inverse U-shaped function of amount of prefeeding during acquisition, with the highest value occuring at an intermediate drive level. (Author)

Descriptors :   (*CONDITIONED RESPONSE, *MOTIVATION), FORCE(MECHANICS), REACTION(PSYCHOLOGY), RATS, THESES

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE