Abstract: This experiment studied how member status differences (equal group (4--4--4), conditional group (3--4--5), outstanding group (3--3--5) and excellent group (3--5--5))and task type (mystery problem, person selec- tion, resource arrangement and risky decision) influenced group consens- us in decision-making in small group. It predicted five decision making models: truth model, power model, majority model, and teh weaker's coalit- ion model. The results show that the truth model best fits mystery pro- blems, while the power model fits the oustanding group (3--3--5). These patterns correspond to some Western results and are also representative of some Chinese people's decision making in small groups.

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