Table 3. Means, standard deviation and z-scores for three clusters solution by -means cluster analysis. Cluster Task Ego n M SD z M SD z 1. High-task/Moderate-ego 11 4.39 .29 1.13 3.27 .45 .20 2. Moderate-task/Low-ego 9 3.64 .25 -.46 2.26 .39 -1.27 3. Moderate-task/Moderate-ego 18 3.63 .25 -.44 3.48 .37 .44