Bristow, Hogg, and Johnson (2010) investigated the effects of various messages on perceptions of potentially catastrophic events - in particular, climate change. Participants were randomly assigned to watch either a video supporting hypotheses about humanity's role in climate change, or a video that was skeptical about our role. Next, participants were asked to rate their likelihood of engaging in environmentally-friendly behaviors. As predicted, reported behavioral intentions showed differences across video message conditions (i.e., lower intentions to engage in environmentally-friendly behaviors in the skeptical message). If testing hypotheses about the effects of video message condition on behaviors, it would be most appropriate to calculate a 1)Independent samples t-test 2)Paired- samples t-test 3)One sample t-test 4)Z-test
Bristow, Hogg, and Johnson (2010) investigated the effects of various messages on perceptions
of potentially catastrophic
assigned to watch either a video supporting hypotheses about humanity's role in climate change,
or a video that was skeptical about our role. Next, participants were asked to rate their likelihood
of engaging in environmentally-friendly behaviors. As predicted, reported behavioral intentions
showed differences across video message conditions (i.e., lower intentions to engage in
environmentally-friendly behaviors in the skeptical message).
If testing hypotheses about the effects of video message condition on behaviors, it would be
most appropriate to calculate a
1)Independent samples t-test
2)Paired- samples t-test
3)One sample t-test
4)Z-test
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