This article reviews empirical research on memories for negative perso
nal experiences among adults. It examines basic concepts (including ne
ural underpinnings), theoretical models of the affect-memory relations
hip, and data from three sources: victims or witnesses to crimes and a
trocities, ''flashbulb memories'' for traumatic events, and laboratory
simulations of shocking experiences. Evidence suggests that memories
for traumatic experiences contain more central than peripheral detail,
are reasonably accurate and well-retained for very long periods, but
are not completely indelible. Assertions of eyewitness memory's vulner
ability to change through suggestion have overstated the evidence. For
ensic and clinical implications are discussed and a plea issued for mo
re study of the memory phenomena that characterize posttraumatic stres
s disorder (PTSD) and are the focus of trauma survivors' treatment.