Accession Number : AD0625324

Title :   RESPONSE DURATION AND INTERRESPONSE TIME UNDER FR5 AND VR5 SCHEDULES AND SUBSEQUENT EXTINCTION,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AEROSPACE MEDICAL RESEARCH DEPT

Personal Author(s) : Herrick,Robert M.

Report Date : 08 NOV 1965

Pagination or Media Count : 19

Abstract : With respect to press duration, t, and interresponse time, i, rats under FR5 and VR5 schedules and subsequent extinction behaved similarly. During acquisition days, mean t and mean i decreased, and mean response rate increased. Compared with acquisition, in extinction (a) the relative frequency of short t's decreased, (b) either the relative frequency of short is decreased or the relative frequencies of both short and long is increased. Variations in several central tendency and variability measures of t and i within the first extinction day were greater than variations within the last acquisition day. Median duration of the first press or of the first interresponse time following water-dipper operation was relatively long ('postreinforcement pause'). Thereafter, both median t and median i, as function of ordinal number following dipper operation, tended to remain relatively constant. Within an FR5 or VR5 cycle, response rate changed abruptly from zero to a constant rate. During extinction, periods of responding at a normal or slightly subnormal rate alternated with periods of little or no responding. (Author)

Descriptors :   (*BEHAVIOR, CONDITIONED RESPONSE), (*CONDITIONED RESPONSE, LEARNING), REACTION(PSYCHOLOGY), REFLEXES, RATS

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE