In terms of the influence of PGS on memory, it seems that subjects remember well the events that caused +ve PGS (M=7.8, SD=2.1), better than causes for -ve PGS (M=5.7, SD= 3.3). Once excluded the subjects that never experience -ve PGS, A Wilcoxon Signed-Ranks Test indicated that +ve PGS causes are statistically better memorized than –ve PGS causes (Z=27, p=.03).