In a small-scale study, Rados and Cartwright (1982) found that preslee
p thought samples, but not postsleep-elicited significant concerns, co
uld be matched with a night's REM dream content on a cross-participant
basis. We collected either presleep thought samples or significant co
ncerns for later blind judge matching with 8 participants' mentation r
eports from the night's first REM period over 8 nonconsecutive nights
each. Although some persons' first-REM dreams were successfully identi
fied by judges from presleep ideation, both vs. presleep ideation from
the same person on other nights and vs. presleep ideation from other
persons on the same night, there was no overall group pattern suggesti
ng continuity of dream content with presleep ideation. We also did not
replicate the claimed superiority of thought samples vis a vis signif
icant concerns. Reliable content analysis showed a different proportio
nal distribution of life experiences in waking and dream ideation.