Figure 3
Hierarchical cluster results. (a) Dendrogram from hierarchical clustering (Ward’s method, Euclidian distance, SPSS 20.0) showing the sequences of merges and splits of cluster and an optimal solution of 3 clusters, using 10 distance as cutting point (red line). (b) The line graph shows the z-standardized mean of the sum of dominance pair scores and the absolute difference between dominance pair scores for each cluster. (c) This spider graph represents the z-standardized mean of the Sibling Type Questionnaire (STQ) scores for each cluster. (d) This spider graph represents the z-standardized mean of the personality traits scores with significant differences between clusters. Note: LL = both low in dominance, LH = one low in dominance, and one in high dominance, HH = both high in dominance, DoPL = Dominance, Prestige, Leadership scale, Mach-IV = Machiavellianism scale, HCA = Hypercompetitive Attitude scale, RSPQ = Rank Style with Peers Questionnaire, DL = Dominant Leadership, RSA = Ruthless Self-Advancement.
