Individual differences and developmental changes in preschoolers' friendships.

Although uniqueness of peer relationships has been demonstrated (e.g., Ross & Lollis, 1989), investigators have not examined the degree to which interaction patterns within peer relationships are stable over time. To examine stability in the qualitative features of preschoolers' friendships, 24 pairs of friends were observed in 2 play sessions scheduled approximately 1 year apart. A multivariate assessment of the friends'interactions was conducted to identify domains of social interaction showing continuity or change. Correlations between Time 1 and Time 2 scores indicated that dyads' scores on measures of positive social orientation, cohesiveness, and control were significantly correlated over time. Paired t tests revealed that coordinated play and positive social orientation were more salient at Time 2