Social and Behavioral Sciences Commons^™

Experimenter Bias Effect At Varying Levels Of Motivation, Leslie Marie Slade Gray

All Master's Theses

This study examined the effects of experimenter motivation upon the experimenter bias effect on a person perception task. It was hypothesized that the experimenter bias effect would decrease as reward and threat of punishment increased.

Thirty-five experimenters were randomly assigned to five treatment groups including a control group, two reward groups, and two punishment conditions. Each experimenter administered the photo task to two subjects. The results failed to support the experimental hypotheses.

The Effects Of Motivation Level And Task Difficulty On Performance On A Vigilance Task, Donald C. Johnston

All Master's Theses

Although many variables affecting vigilance behavior have been identified, there has not been substantial agreement on the importance of these variables as contributors either to performance decrements often found in laboratory research or to performance levels in industrial inspection tasks. Two variables of presumed importance are level of motivation and task difficulty. The purpose of the present experiment was to assess the main and interactive effects of these variables on performance on a task which approximated more closely an industrial inspection task than have the bulk of traditional vigilance studies.