[1Win4] Poster session 1

[1Win4-103] Effects of Speech Acts on Movements in Reaction to Irregular Stimulus Presentation

Focusing on Reaction Time and Kinesthetic Impressions in Perceptual Reaction Test

〇Masatoshi Yamada¹, Ryosuke Takata² (1.Tokoha University, 2.University of Tokyo)

2Win5-106で発表

Keywords:skill, word usage, cognitive speech, reaction time, color discrimination

n many sports situations, it is recommended that players make a sound while performing skills, but there is a risk that movement will be delayed or tense if words are involved. The purpose of this study is to verify the effect of color discrimination on reaction to irregular stimulus presentation through laboratory experiments from the perspective of cognitive science. The method was to instruct 33 subjects to take a perceptual reaction test in which the time until a circle was displayed was irregular. In control task (hereafter, CT), the subjects were asked to say “yes (hai)” when either a red or blue circle was displayed. And in target task (hereafter, TT), the subjects were asked to say “red (aka)” when a red circle was displayed and “blue (ao)” when a blue circle was displayed. The subjects were instructed to click the space key as quickly as possible only when a red circle was displayed. It was also checked the kinesthetic impressions of the difficulty of speech and the speed of clicking. The results showed that the reaction time in TT was significantly slower. Regarding the kinesthetic impression, while there was no difference in the speed of clicking, the results about speech showed that TT was significantly more difficult. The discussion suggests that, even though the reaction is actually delayed due to speech during movement, there is a possibility of making a wrong recognition without noticing delay.