This study examined the longitudinal reciprocal effects between leader
effectiveness and follower effectiveness (leaders lower in the hierar
chy and groups of soldiers). The effectiveness of 60 groups of soldier
s and their commanders up to platoon level was measured at 3 points in
time. The results show that platoon commanders have an effect on the
performance of their groups but not on the groups' cohesion or attitud
es. In rum, commander effectiveness is influenced by the attitudes of
the groups of soldiers and of the deputy group commanders. The results
suggest that groups perform better when they are more open to leaders
hip.