The purpose of this study was to examine the association between pater
nal alcohol use and the mother-infant relationship. A related goal was
to investigate the role of maternal depression and marital satisfacti
on in moderating this relationship. Subjects were 55 mother-infant dya
ds (12-24-month-old infants) who were observed in the Strange Situatio
n paradigm to assess infant attachment and in structured play interact
ions. There were 23 families with heavy drinking fathers and 32 with l
ight drinking fathers. As predicted, infants of heavy drinking fathers
were more likely to be insecurely attached compared to infants of lig
ht drinking fathers. Contrary to expectations, neither maternal depres
sion nor marital interaction mediated the relationship between paterna
l alcohol use and mother-infant interactions. However, maternal depres
sion did interact with paternal alcohol use to predict infant attachme
nt security and maternal sensitivity. There was also an interactive ef
fect of marital satisfaction and paternal alcohol use on maternal sens
itivity. The results suggest that paternal alcohol use may influence f
amily functioning and the mother-child relationship as early as infanc
y and suggest one possible pathway toward maladjustment among infants
of heavy drinking fathers. However, in addition to investigating the i
mpact of paternal alcohol use on the father-infant relationship, the i
nfluence of various familial factors associated with paternal alcohol
use need to be more closely examined from a longitudinal perspective.