Exploratory study on the daily curve of cognitive fatigue of college students

Objective To develop a measure for cognitive fatigue and to assess cognitive fatigue among college students with different intelligence quotient (IQ) and Temperament.Methods Intelligence and temperament was tested among 33 college students who are preparing for the postgraduate entrance examination.Cognitive fatigue at 10 different time points in one day was assessed respectively.Results During morning (7:30 to 11:20),cognitive fatigue gradually decreased,while during afternoon (14:20 to 18:20),initial decrease of cognitive fatigue was followed by significant increase.Cognitive fatigue among college students with high IQ was higher than college students with low IQ.Chronic fatigue scores higher in each time points among college students in choleric temperament group,compared with other three groups.Variation of chronic fatigue was smallest among students in plethora group,highest in despondent group.Conclusion The college students' cognitive fatigue is affected by time points,IQ and temperaments.