References in periodicals archive ?
1957; Hicks, 1970; Page, 1971; Rosenthal, 1966), findings from this study yielded evidence for experimenter effects on performance on the sorts of tasks commonly employed in mental stress testing.
The experimenter effect is, despite Mcock's objections to its use in parapsychology, firmly established in psychology.
From this perspective, the experimenter effect perhaps signifies that in close relationships psi is more usefully conceptualized as a joint expression of the intentions or needs of both participants (Reed, 1994; see also White, 1976a, 1976b).
The answer was positive, but no firm conclusions about the cause of the effect could be drawn, as it was not clear whether the induction per se or the difference in hypnotic abilities or even an experimenter effect might have caused the differences in performance.
This looks like an experimenter effect (see Wiseman & Schlitz 1997), although it is important to note that the difference between the scores for each agent was nonsignificant.
However, such challenges may overstretch the abilities of the researchers: The scope of experimenter effects became clear in the 1970s, and this resulted in a crisis in process-oriented research because any experimental result could be due to the preferences of the experimenter instead of the subjects taking part in the experiment.
Palmer does not discuss the lack of correlation between sample size and z score as a possible manifestation of experimenter psi even though that is the most obvious explanation and may provide some of the clearest evidence for paranormal experimenter effects.