Out of a large number of university students who responded to a questi
onnaire about childhood sexual abuse (CSA), approximately a quarter re
ported that they had an experience in childhood that qualified. The ma
jority of students who reported a CSA experience refused, elsewhere in
the questionnaire, to classify themselves as 'sexually abused'. Moreo
ver, those who claimed lack of understanding of the event at the time
it occurred also reported that they thought about the event less often
in the intervening years and that they conceivably would have not rem
embered the event even if asked directly about it. Lack of understandi
ng at the time of encoding leads to less reported memory. These observ
ations are discussed in terms of possible mechanisms for how genuine s
exual abuse experiences might be temporarily forgotten-even for extend
ed periods-and subsequently remembered.