Effects of apparent pain in others on observer's reaction time.

Abstract
The reaction time (RT) of 4 groups of 25 Ss each was measured under the following conditions: Group SM (shock-movement) was told that an electric shock was being delivered to another person (performer) who responded with jerky arm movements; Group SNM (shock-no movement) received the same instructions but the performer made no arm movement; Groups NSM (no shock-movement) and NSNM (no shock-no movement) received the same treatment as Groups SM and SNM, respectively, with the omission of the shock instructions. The RT of Group SM was significantly faster than the other 3 groups which performed at approximately the same level. The results are interpreted as supporting the notion that exposure to emotional manifestations of other people has activating effects on the O's RT. (PsycINFO Database Record (c) 2016 APA, all rights reserved)

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