The purpose of the present study was, first, to examine the preference patterns of different types of decision strategies — additive (ADD), additive difference (ADD-DIF), conjunctive (CONJ), lexicographic (LEX)— in the decision task with different numbers of alternatives and attributes, and secondly, to investigate the relationships between the preferences of decision strategies and the indexes of the decision making process. The subjects were sixty-seven female and male university students. The main results were as follows: (1) Although there were interrelationships among the preferences of decision strategies, the preference pattern of each strategy was consistent among the different decision task situations. (2) The preference of each decision strategies was more determined by perceived optimizing potential of the strategy than perceived simplifying potential in the decision making process.