In problem-based learning (PBL) students are encouraged to take responsibility for their own self-regulated learning process. The present study focuses on two self-regulated learning strategies, namely time planning and self-monitoring. Time planning involves time management, scheduling and planning one's study time. Self-monitoring involves setting goals, focusing attention and monitoring study activities. The aim of this study was first, to assess students' time planning and self-monitoring skills and second, to investigate how time planning and self-monitoring skills are related to actual individual study time, (un)prepared participation in the tutorial group and cognitive achievement. 165 first-year psychology students, enrolled in a problem-based curriculum, filled in a questionnaire (response 77%) and their scores on two tests of cognitive achievement were used. Results showed that students who are better time-planners and who have better self-monitoring skills were more efficient in allocating their individual study time (spent less time on individual study), prepared more appropriately for the tutorial group meeting (although not significant [n.s.]) and achieved higher scores on cognitive tests. (Contains 3 figures and 1 table.)