Research Of Impact Factors On Change Detection Based On Football Scene

Change detection refers to detection of changes in our surroundings. Flick paradigm, spatial cue paradigm and dual task paradigm was adopted in this study to investigate the effects of stimulus property, type of attention, subcomponent of working memory on change detection as well as differences between groups.This research included 3 experiments in total. In Exp1,a three-factor mixed design of 2(group) ×3(type of change) was employed to inquiry the effects of representation on change detection with theresponse time as dependent factor. The results were statistical analyzed by mixed repeated measures analysis of variance and suggested that football players performed better than the common college students.Position changes were the easiest to detect, and color changes were the hardest,indicating that more accumulated information needed for color property. Football players were more sensitive to position changes.In Exp2,a mixed design of 2(group) ×2(type of cue) ×2(validity of cue) was selected to inspect change detection under two types of attentional conditions with theresponse time as dependent factor. The results indicated that the effect of exogenous cue was better than endogenous cue. The response time was faster in valid cue than in invalid cue condition.Cue validity had smaller effect on exogenous cue than endogenous cue, which indicated that exogenous cue could involuntarily trigger attention. Compared with the commoners, football players were affected less interference of cue validity, suggesting their stronger inhibiting capacity to irrelevant information.Based on Exp2,Exp3 investigated the impact of different subcomponent working memory on change detection under exogenous cue by a mixed design of 2(group)×2(type of subcomponent working memory) ×2(validity of cue). The results revealed that when central executive system was occupied, compared to visuospatial sketchpad task, the detection time would increase obviously. The response time was faster in valid cue than in invalid cue condition. Football players performed better than thecommon college students. Difference between groups was not significant under the visuospatial sketchpad task, while football players performed better than common students under the central executive function task, which manifested that football players had stronger executive control ability.This research investigated distinct effects on change detection between common and special population,suggesting that change detection was a flexible mechanism moderated by many cognitive factors; Moreover, simulated football scene was adopted toimproved ecological validity of thisstudy and provide references for football players and coaches.