Post-learning stress enhances long-term memory and differentially influences memory in females depending on menstrual stage

Phillip R. Zoladz, David M. Peters, Chelsea E. Cadle, Andrea E. Kalchik, Rachael L. Aufdenkampe, Alison M. Dailey, Callie M. Brown, Amanda R. Scharf, McKenna B. Earley, Courtney L. Knippen, Boyd R. Rorabaugh
2015 Acta Psychologica  
Most work has shown that post-learning stress enhances long-term memory; however, there have been recent inconsistencies in this literature. The purpose of the present study was to examine further the effects of post-learning stress on long-term memory and to explore any sex differences that may exist. Male and female participants learned a list of 42 words that varied in emotional valence and arousal level. Following encoding, participants completed a free recall assessment and then submerged
more » ... heir hand into a bath of ice cold (stress) or lukewarm (no stress) water for 3 min. The next day, participants were given free recall and recognition tests. Stressed participants recalled more words than non-stressed participants 24 h after learning. Stress also enhanced female participants' recall of arousing words when they were in the follicular, but not luteal, phase. These findings replicate previous work examining post-learning stress effects on memory and implicate the involvement of sex-related hormones in such effects.
doi:10.1016/j.actpsy.2015.07.008 pmid:26233730 fatcat:wf5mirpexfbanexfps6cxgnnt4