Although correlations between marital conflict histories and increased reac
tivity by children during conflict exposure are well documented (i.e., sens
itization), questions about causality remain unresolved. This study subject
ed the sensitization hypothesis, which is a critical prediction of several
theories about interparental conflict, to an experimental test. Children in
3 age groups (early childhood, preadolescence, late adolescence) viewed vi
deotapes of an adult couple engaged in a history of (a) 4 hostile, unresolv
ed conflicts (destructive) or (b)4 mild, resolved conflicts (constructive).
Next, all children MI ere interviewed about their responses after witnessi
ng a standard conflict between the same adult couple. Supporting the sensit
ization hypothesis, destructive conflict histories elicited more negative p
atterns of responding across multiple domains; age and gender moderated man
y effects. Results suggested that constructive conflict histories had benig
n effects on children.