This study tested the hypothesis that processing strategy moderates the eff
ect of television viewing on social perceptions (cultivation effect). One h
undred twenty-two male arn fe male students provided estimates of the preva
lence of crime, occupations, affluence, and marital discord under one of th
ree conditions. Some participants were induced to process heuristically (he
uristic group) through instructions to provide their estimates spontaneousl
y with little elaboration. Other participants were induced to process syste
matically (systematic group) through an accuracy motivation/task importance
manipulation. A third (control) group received instructions to simply answ
er the questions. The results indicated that processing strategy moderated
the cultivation effect such that cultivation effects were rioted in the heu
ristic and control groups brit not iii the systematic group. These results
are consistent with the notion that the cultivation effect carl be explaine
d in part as the result of heuristic processing through lack of source disc
ounting, and they provide support for the heuristic processing model of cul
tivation effects.