Results
Studies Included in the Sample
Forty-three cases were identified that tested the influence of an inoculation treatment
in comparison with a no-message control on attitudes. Twenty cases tested the
influence of an inoculation treatment on attitudes in comparison with a supportive
message, and 10 cases examined the influence of a supportive message in comparison
with a no-message control condition. A majority of the cases in the sample used
undergraduate, high school, or grammar school students as participants. The topics
294 J. A. Banas & S. A. Rains
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addressed in the cases ranged from politics (k8) and corporate advertising or
public relations (k14) to social issues (k14) (e.g., the legalization of marijuana)
and automobile safety (k2). Details for all cases included in the analyses are
reported in Table 1.