Accession Number : AD0696985

Title :   FACTORS AFFECTING RETRIEVAL OF TASK-TIME DATA FROM HUMAN STORE,

Corporate Author : CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Bongers,Lael

Report Date : AUG 1969

Pagination or Media Count : 52

Abstract : A methodology for obtaining time estimates from human subjects was developed which was consistent with current theory and the empirical data. The methodology was tested on 20 subjects, experienced and inexperienced workers who were currently performing the same task at the Long Beach Naval Shipyard. Subjects were asked to estimate task completion times based on their total past experience and to assign a probability of occurrence to each time value. The end products were probability distributions of task completion times, which were then compared with actual task time measurements made by Methods and Standards personnel at the shipyard. Estimated times from experienced workers were within satisfactory range when a 'learning curve' correction was made. Some variables affecting human judgment of time duration were investigated. The need for further research was discussed and proposals were outlined. (Author)

Descriptors :   (*TIME STUDIES, PREDICTIONS), PROBABILITY, DECISION MAKING, FACTOR ANALYSIS, MATHEMATICAL PREDICTION

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE