Effects Of Stimulus Response Time Interval And Ego Depletion On Cognitive Control

Dual Mechanisms of Control Account thinks that the cognitive control is formed by proactive control and reactive control.The proactive control refers to people make selective attention to stimulus information and enhance processing of clue information before making a behavioral response to conflict,actively maintain this clue information in a certain period of time,and use the clue information to anticipate the next response.Reactive control refers to people quickly resolve conflicts based on the immediate response information before an individual makes behavioral reaction,and reactivate the previous clue information when necessary to correct the reaction tendency.The AX-CPT task paradigm is a classic paradigm for studying cognitive control.It can effectively separate proactive control from reactive control.The AY sequence represents reactive control.If the subject’s reactive control is strengthened,the reaction time or error rate of the AY sequence will be reduced.The BX sequence represents proactive control.If the subject’s proactive control is strengthened,the reaction time or error rate of the BX sequence will be reduced.At present,research on proactive control and reactive control is mainly based on different control mechanisms.Proactive control uses an up-bottom control mechanism,while reactive control uses a bottom-up control mechanism.Existing researches for up-bottom cognitive control use larger time intervals,while researches for bottom-up cognitive control use smaller time intervals.There is no clear conclusion as to how the time interval affects different cognitive control methods.The study systematically explores the effect of stimulus response time interval on cognitive control through 6 time interval variables.Then the study combines a hot issue,ego depletion in psychological research in recent years to study the effect of stimulus response time interval and ego depletion on cognitive control.This study includes a preliminary experiment and two formal experiments.In the preliminary experiment,30 ordinary university students are selected,and the effectiveness of the Chinese version of the E-crossing transcription task as a self-wearing operation was discussed.The experimental results show that the Chinese version of the E-crossing transcription task has a good ego depletion effect.In Experiment 1,31 ordinary college students are selected,and the AX-CPT task is used.The stimulus response time interval is taken as an independent variable to explore the effect of stimulus response time interval on cognitive control.The results show that when the stimulus response time interval increases from 50 ms or 200 ms to 750 ms,the reactive control of subjects is weakened;when the stimulus response time interval increases from 50 ms or 200 ms to 750 ms or 1000 ms,the proactive control of subjects is strengthened,and when the stimulus response time interval increases from 750 ms or 1000 ms to 3000 ms,the proactive control of subjects is weakened.In the Experiment 2,61 ordinary college students are selected.The Experiment 2 uses the Chinese version of the E-crossing transcription task and the AX-CPT task.In the Experiment 1,the stimulus response time intervals with significant effects on cognitive control are 200 ms,750ms,and 3000 ms,which are chosen as variables to explore the effects of stimulus response time interval and ego depletion on cognitive control.It is found that increasing the stimulus response time interval from 200 ms to 750 ms can enhance the subject’s proactive control and the balance of cognitive is biased to proactive control;increasing the stimulus response time interval from 750 ms to 3000 ms will not continue to strengthen the subject’s proactive control,but will weaken the subject’s proactive control and the balance of cognitive is biased to reactive control.Ego depletion has a weakening effect on the subject’s reactive control at three stimulus response time intervals,but has a weakening effect only on the subject’s proactive control at an interval of 750 ms.Based on the above experimental results and related discussions,the study draws the following conclusions:(1)Different stimulus response time intervals have different influence mechanisms on proactive control and reactive control.As the stimulus response time interval increases,the proactive control is strengthened first and then weakened,and the reactive control continues to be weakened.(2)As the stimulus response time interval increases,the balance of cognitive control is first biased to proactive control,then biased to reactive control.(3)Ego depletion can weaken proactive control and reactive control.(4)Under different stimulus response time interval conditions,ego depletion weakens the reactive control,but it can only weaken the proactive control at 750 ms and has no effect on the proactive control at 200 ms and 3000 ms.