Studies have hypothesized conflicting results regarding the effect of
actors' interpersonal attachment on commitment to the encompassing lar
ge group. The cohesion approach hypothesizes that interpersonal attach
ment among actors will enhance group cohesiveness, which produces more
commitment to the large group. In contrast, the subgroup approach pre
dicts that interpersonal attachment among actors will contribute more
to subgroup fragmentation which sets up barriers to actors' commitment
to the large group. We derive hypotheses from these opposing approach
es and test the hypotheses over a sample of 1621 employees drawn from
62 work organizations in Korea. The empirical tests indicate the follo
wing: (1) Interpersonal attachment among employees in local work units
is shown to have a positive effect on commitment to the work organiza
tion encompassing the work units. (2) Interpersonal attachment between
dissimilar positions in the same work units is shown to have a more p
ositive effect on commitment than that between similar positions. Impl
ications of these findings on the two theories are discussed.