Accession Number:

AD0614708

Title:

SEQUENTIAL INFORMATION SEEKING: EFFECTS OF THE NUMBER OF TERMINAL ACTS AND PRIOR INFORMATION

Descriptive Note:

Technical rept.

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL PSYCHOMETRIC LAB

Personal Author(s):

Report Date:

1964-10-01

Pagination or Media Count:

18.0

Abstract:

An experiment was conducted by means of a digital computer in which 54 human Ss were faced with the task of sampling from a hypothetical binomial universe in which a proportion, p, of all observations were top quality. Ss sampled the universe sequentially, stopping after some number of observations had been made to make a terminal decision by selecting the one of the Ss mutually exclusive and exhaustive subsets of the unit interval which S believed contained p. The four experimental treatments were defined by the four combinations of the two decision partitions of the unit interval, one involving 3 possible terminal acts, the other having 5 alternatives, and the two prior frequency distributions, one a rectangular distribution over 0 - 1, the other being negatively skewed. Analysis of variance of the number of predecision observations taken indicated a significant individual differences b significant S by treatment interactions c differences attributable to the decision partitions with more observations being taken in the 5-act case than in the 3-act case and d no effect of prior frequency distributions, but a tendency to take more observations in the second 16 trials than in the first 16.

Subject Categories:

  • Administration and Management

Distribution Statement:

APPROVED FOR PUBLIC RELEASE