Impact of Prior Sets Given Experimenters and Subjects on the Experimenter Expectancy Effect

Sociometry ◽  
1973 ◽  
Vol 36 (1) ◽  
pp. 113 ◽  
Author(s):  
Nancy E. Adler
Keyword(s):  
Expectancy Effect ◽  
Experimenter Expectancy

Personality Moderators of the Experimenter Expectancy Effect: A Reexamination of Five Hypotheses

1991 ◽  
Vol 17 (5) ◽  
pp. 569-579 ◽  
Author(s):  
Pamela J. Hazelrigg ◽  
Harris Cooper ◽  
Alan J. Strathman
Keyword(s):  
Expectancy Effect ◽  
Experimenter Expectancy

Task Variations in Studies of Experimenter Expectancy Effects

1969 ◽  
Vol 29 (1) ◽  
pp. 9-10 ◽  
Author(s):  
Robert Rosenthal
Keyword(s):  
Person Perception ◽  
Expectancy Effects ◽  
Perception Task ◽  
Expectancy Effect ◽  
Experimenter Expectancy

Although most studies of E-expectancy effect have employed a person-perception task, over 40 studies have been conducted employing other tasks. In general, tasks other than the person-perception task tend to show greater effects of E expectancy.

Group Cohesion, Task Performance, and the Experimenter Expectancy Effect

1978 ◽  
Vol 31 (11) ◽  
pp. 939-956 ◽  
Author(s):  
Johan Hoogstraten ◽  
Harrie C. M. Vorst
Keyword(s):  
Task Performance ◽  
Group Cohesion ◽  
Expectancy Effect ◽  
Experimenter Expectancy

Effects of Monetary Incentives on Task Switching

2012 ◽  
Vol 59 (4) ◽  
pp. 216-226 ◽  
Author(s):  
Thomas Kleinsorge ◽  
Gerhard Rinkenauer
Keyword(s):  
Task Switching ◽  
Temporal Dynamics ◽  
Reward Processing ◽  
General Level ◽  
Monetary Incentives ◽  
Switch Costs ◽  
Expectancy Effect ◽  
Reward Expectancy ◽  
Trial Basis

In two experiments, effects of incentives on task switching were investigated. Incentives were provided as a monetary bonus. In both experiments, the availability of a bonus varied on a trial-to-trial basis. The main difference between the experiments relates to the association of incentives to individual tasks. In Experiment 1, the association of incentives to individual tasks was fixed. Under these conditions, the effect of incentives was largely due to reward expectancy. Switch costs were reduced to statistical insignificance. This was true even with the task that was not associated with a bonus. In Experiment 2, there was a variable association of incentives to individual tasks. Under these conditions, the reward expectancy effect was bound to conditions with a well-established bonus-task association. In conditions in which the bonus-task association was not established in advance, enhanced performance of the bonus task was accompanied by performance decrements with the task that was not associated with a bonus. Reward expectancy affected mainly the general level of performance. The outcome of this study may also inform recently suggested neurobiological accounts about the temporal dynamics of reward processing.

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