Performance at training on unrelated and related paired-associates in the 24 hour groups (24 hr am, “Delayed sleep”; 24 hr pm, “Immediate sleep”).

<p><i>Note:</i> Values are means with SEM in parentheses. Note that across all three experiments, training in the morning (<i>Wake, 30 min am and 24 hr am groups</i>) did not differ from training in the evening (<i>Sleep, 30 min pm and 24 hr pm groups</i>) on the number of trials it took to reach the 60% criterion or % correct responses on the final (i.e. criterion) training trial.