Two effects that can influence the creation of false memories were investigated. First, the classic effect of imagination inflation was investigated. Second, the effect of exposure to modified premature cognitive commitment procedure, in which subjects apply bias correction in order to be opposed to suggested information. 24 subjects were asked to perform, imagine or hear simple action statements. Then half of the subjects imagined performing some other actions. One week later half of the subjects were exposed to false information that they have the tendency to underestimate the quantity of many occurrences in everyday life. The surprising finding was that imagination inflation effect had not emerged. Nevertheless, the exposure to information about fictitious deficit led to bias correction and to source monitoring errors in which actions that had not been presented were recollected as having been imagined or heard.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.