Accession Number:

AD0691728

Title:

PROCESSING OF SEQUENTIALLY PRESENTED SIGNALS IN INFORMATION-COMBINING TASKS,

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR DEPT OF PHYSIOLOGY

Personal Author(s):

Report Date:

1969-06-01

Pagination or Media Count:

63.0

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

Subject Categories:

  • Psychology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE