Dm. Wegner et al., MEMORIES OUT OF ORDER - THOUGHT SUPPRESSION AND THE DISTURBANCE OF SEQUENCE MEMORY, Journal of personality and social psychology, 71(4), 1996, pp. 680-691
Participants in 2 experiments watched a filmed story and then left the
lab-with instructions not to think about the film, with instructions
to think about the film, or with no instructions. Memories of the film
, assessed on participants' return to the lab some 5 hr later, showed
reliable effects of thought suppression on memory for the sequence of
events in the him. Participants who suppressed thoughts of the film we
re less able to retrieve the order of events by several measures than
were those in the other groups, even though their retrieval of the eve
nts themselves as assessed by recognition, free recall, and cued recal
l was not generally impaired.