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Table 3 Mean correct response time (RT) and accuracy for all the combinations of social condition and difficulty level (alpha value) in Experiments 2a and 2b

From: A new measure of group decision-making efficiency

Experiment 2a 0.81 0.85 0.865 0.885 0.9 Average
RT (seconds)
 Worse observer 0.809 (0.097) 0.963 (0.115) 1.049 (0.157) 1.124 (0.159) 1.205 (0.184) 1.030 (0.197)
 Better observer 0.753 (0.077) 0.825 (0.081) 0.909 (0.103) 0.978 (0.124) 1.008 (0.159) 0.895 (0.145)
 Collaboration 0.782 (0.075) 0.896 (0.089) 0.978 (0.121) 1.054 (0.135) 1.104 (0.165) 0.963 (0.165)
 average 0.781 (0.085) 0.895 (0.109) 0.979 (0.138) 1.052 (0.149) 1.106 (0.184)  
Accuracy
 Worse observer 0.91 (0.06) 0.72 (0.13) 0.61 (0.08) 0.46 (0.13) 0.36 (0.19) 0.61 (0.22)
 Better observer 0.96 (0.02) 0.85 (0.07) 0.77 (0.07) 0.61 (0.07) 0.48 (0.08) 0.73 (0.18)
 Collaboration 0.99 (0.02) 0.95 (0.06) 0.87 (0.12) 0.72 (0.14) 0.57 (0.12) 0.82 (0.18)
 average 0.95 (0.05) 0.84 (0.13) 0.75 (0.14) 0.60 (0.16) 0.47 (0.13)  
Experiment 2b 0.69 0.77 0.83 0.87 0.9 average
RT (seconds)
 Worse observer 0.900 (0.222) 0.935 (0.193) 1.082 (0.297) 1.170 (0.300) 1.275 (0.463) 1.072 (0.329)
 Better observer 0.748 (0.121) 0.836 (0.189) 1.025 (0.259) 1.165 (0.287) 1.271 (0.470) 1.009 (0.341)
 Collaboration 0.823 (0.137) 0.880 (0.147) 1.049 (0.269) 1.170 (0.290) 1.296 (0.451) 1.044 (0.324)
 average 0.824 (0.172) 0.884 (0.176) 1.052 (0.267) 1.168 (0.282) 1.281 (0.445)  
Accuracy
 Worse observer 0.89 (0.12) 0.77 (0.16) 0.60 (0.13) 0.48 (0.16) 0.38 (0.18) 0.63 (0.24)
 Better observer 0.99 (0.01) 0.97 (0.03) 0.87 (0.11) 0.61 (0.14) 0.37 (0.18) 0.76 (0.27)
 Collaboration 0.97 (0.03) 0.92 (0.09) 0.84 (0.12) 0.67 (0.17) 0.45 (0.15) 0.77 (0.22)
 average 0.95 (0.08) 0.89 (0.14) 0.77 (0.17) 0.59 (0.17) 0.40 (0.17)  
  1. Values in parentheses represent standard deviation