Experimental evaluation of the influence of the team members' personalities on the team performance

This report deals with the result of the experiment that testees' teams had coped with abnormal events on power plant simulator. 8 teams were AAA1, AAA2, ACD1, ACD2, CCC1, CCC2, DDD1 and DDD2 consist of 3 members. Members of teams were intentionally united by his personality with the results examined by Yatabe-Guilford personality test (A: Average type, C: Calm type, D: Director type). Each team coped with 8 abnormal events (leak from the pipe after the condensate booster pump-A and feedwater control system failure, vacuum pump-A failure, etc.). Teams' behaviors were evaluated and calculated the evaluated values about 3 team's functions: (1) direction and orientation (11 items), (2) recovery (13 items) and (3) maintenance of cooperation (13 items). The order of the evaluated values were almost AAAs≤ACDs≤CCCs<DDDs with each function. And the results on multiple comparison of the evaluated values are as follows: (a) There are remarkable significances between DDDs and other combinations of personalities (32 cases per 36 cases). (b) Some cases are significant among 2 teams of same combination of personalities (4 cases per 12 cases). Also the results on analysis of utterances of team member are as follows: (c) There is good correspondence of the number of utterances to the evaluated values. (d) With AAAs, the number of 'Instruction' is very small. (e) With CCCs, utterances related to maintenance of cooperation are relatively few. On these results, the author is convinced that combination of personalities in not matured team certainly relates team performance and utterances among the members. (author)