Sleep affects numerous areas of performance in every conceivable context and that includes working memory. While sleep is implicated in the function of WM, it is unclear whether subjective sleep perception or objective sleep measure is responsible for WM function. The study aims to examine whether subjective sleep perception was a mediator between the correlation of objective sleep measures and working memory performance in college student. Methods: 36 participants were recruited from National Dong Hwa University Campus. All participants were measured the emotional status by use of CBAI and CBDI-II. And participants needed to wear actigraphy for a week, as concurrently recording the sleep information by use of sleep logs at home. Participants then finished CPSQI to assess their self-sleep measures and evaluate their performance of WM by use of 2-back task after a week. Analysis: examining the effect of subjective sleep measures on the objective sleep measures and WM performance via the process. No significant was found the correlation of all variables, except TST and TIB. Conclusion: The finding of the study indicated that subjective sleep perception was not a mediator between objective sleep measures and WM performance in the present study.

Abstract I
Introduction 1
Literature Review 5
Sleep quality 5
The sleep of University students 6
Working memory 7
Sleep and working memory 9
Methods 13
Glossary 13
Participants (inclusion-exclusion criteria) 13
Instruments 14
Procedure 21
Statistical analysis 22
Results 25
Discussion 33
References 37
Appendix A 55

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