The present study used observational data on preschool friends and cluster
analysis to derive friendship types. Friend pairs were videotaped in a 1-ho
ur free play session, and observers rated several qualities of the interact
ion. Cluster analysis suggested that both 3- and 5-cluster solutions produc
ed meaningful groupings. For both solutions. the largest cluster included f
riend pairs that were harmonious, responsive, and interactive during play.
A second type of friendship was characterized by harmony but relatively ind
ependent play. A disjointed friendship type, in which friends were low on m
easures of coordinated interaction and positive interaction. was the most s
table over a 1-year period and tended to contain at least one insecurely at
tached child. Discussion focuses on how an analysis of friendship type can
be used to extend our understanding of the nature and socialization functio
ns of friendship.