DEPRESSIVE DEFICITS IN TIME-BASED PROSPECTIVE MEMORY
 
Misaki, S., Tokai Women's College and Ohira, H., Nagoya University, Japan
 
Prospective memory is the memory about one's planned actions in the future. This study examined differential time-monitoring performance in a time- based prospective memory task between mild depressed participants and non- depressed counterparts. Each of the participants were requested to perform an action that he or her clicked the 'Enter' button in the screen per 5 min (fixed interval) and per 3, 5 and 7 min (varied interval) during performing a cover task. The subjects were told that whenever they wanted to know the passing time they could click the 'F1' button in the screen. The cover task was either a recognition test (low load) or a general knowledge test (high load). Performance of prospective memory task and total number of time- monitoring were subjected to a 2 ?~ 2 (group ?~ interval) mixed ANOVA. The analyses showed a significant main effect of interval under the high load in prospective memory performances and a marginal significant main effect of depression under the high road in monitoring responses. These results suggested that each group could divide the resource to the prospective memory task and to the cover task in the low load condition. Also, it suggested that depressed participants varied widely in the time perception.