The purpose of this investigation is to explore the differences of athletes' preferred for coaches' leadership behavior in gender and age in Taiwan. To the athletes, task dependence and task variability-which are discussed in the significance of the findings-show that males are significantly more competitive than females (in relation to the Multidimensional Model of Leadership, Chelladurai & Salah, 1980). In this research, 323(91%) athletes' (199 males, 124 females) data were obtained using the Leadership Scale for Sport (Chelladurai & Salah, 1980). Through the use of comparisons of the independent samples t-test and One-way ANOVA performed on the preference scores among the variables of gender and age, the findings were able to show indications that athletes' preferred significant autocratic behavior proved effective in athletes; thus, the means of males are higher than females in social support, positive feedback, training and instruction, democratic behavior, and athletes' ages that prefer significant social support-indications that males are more effective athletes.