Accession Number : AD0691728

Title :   PROCESSING OF SEQUENTIALLY PRESENTED SIGNALS IN INFORMATION-COMBINING TASKS,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF PHYSIOLOGY

Personal Author(s) : Kamlet,Arthur S.

Report Date : JUN 1969

Pagination or Media Count : 63

Abstract : Human performance theory has relied heavily upon an experimental paradigm in which speeded performance, or reaction time, is measured as a function of the time intervening between two successive stimuli. The study examined a special form of the two-signal paradigm in which the first stimulus provided the 'rule' or 'operator' for defining the appropriate response to the second stimulus. This form of the two-signal experimental paradigm is called an information-combining task. The aim of the present series of experiments was to examine temporal factors in an information-combining task in order to discriminate among alternative human performance theories. Specifically, the number of alternative operators and the number of alternative second signals were independently varied over a range of intervals between the operator and the second signal. In some tests the interstimulus interval was held constant from trial to trial; in other tests the interstimulus interval varied between successive trials. The findings rejected single-channel theories of information processing in favor of a flexible, capacity-sharing model. The results also suggested that subjects performed sophisticated strategy adjustments to take advantage of subtle features of these information-combining tasks. (Author)

Descriptors :   (*PERFORMANCE(HUMAN), REFLEXES), (*REACTION(PSYCHOLOGY), *REFLEXES), TIME, STATISTICAL ANALYSIS

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE