In an earlier study it was found that a pretest
containing positive statements counteracted the
development of negative feelings toward a treatment.
The present experiment sought both to replicate
the earlier study and to answer an additional
question: Is the biasing effect general or is it restricted
to pretest content? Again, it appeared that
a positive pretest acts as a device to counteract the
development of negative sentiments. The effect size,
small in the original experiment, was even smaller
in the present experiment. Moreover, it was found
that the sensitization effect operated only when the
pretest and the posttest were identical. Using dissimilar
pretest and posttest measures eliminated the
Hoogstraten, Joh. (1980). The reactive effect of pretesting in attitude change research: General or specific? Applied Psychological Measurement, 4, 39-42. doi:10.1177/014662168000400105
The reactive effect of pretesting in attitude change research: General or specific?.
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