期刊
EXPERIMENTAL PSYCHOLOGY
卷 70, 期 1, 页码 32-39出版社
HOGREFE PUBLISHING CORP
DOI: 10.1027/1618-3169/a000571
关键词
episodic memory; testing effects; acute psychosocial stress; cortisol; Trier Social Stress Test for Groups (TSST-G)
The forward testing effect refers to improved memory for newer information when previously studied information is tested. This study investigated whether the forward testing effect is robust to retrieval stress induced after encoding. Results showed that retrieval stress had a detrimental effect on recall, but did not affect the forward testing effect. The findings contribute to current theories of the forward testing effect.
The forward testing effect refers to the finding that testing of previously studied information improves memory for subsequently studied newer information. Recent research showed that the effect is immune to acute psychosocial encoding/retrieval stress, i.e., stress that is induced before initial encoding. The present study investigated whether the forward testing effect is also robust to acute psychosocial retrieval stress, i.e., stress that is induced after encoding but before retrieval of the critical item list. Participants (N = 128) studied three lists of words in anticipation of a final cumulative recall test. Participants were tested immediately on Lists 1 and 2 (testing condition) or restudied the two lists after initial study (restudy condition). After study of the critical List 3, psychosocial stress was induced in half of the participants (stress group), whereas no stress was induced in the other half (control group). The Trier Social Stress Test for Groups (TSST-G) was used for stress induction. Salivary cortisol, alpha amylase, and subjective stress were repeatedly measured. The results of the criterion test showed a generally detrimental effect of psychosocial retrieval stress on List 3 recall. Importantly, the forward testing effect was unaffected by retrieval stress. The findings are discussed with respect to current theories of the forward testing effect.
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