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This study examines the relationship among PSA types, PSA-induced mood and the perceived third person message effects. The study design was a 2 PSA types (preventive-oriented health issues and promotion-oriented environmental issues) x 2 PSA-induced mood types (positive and negative) x 2 message effects (on self and on others) mixed repeated-measures design. Overall findings indicate an optimistic bias prevails in evaluating PSAs of various health and environmental issues in different PSA-induced mood conditions. This study also found that positive mood-generating PSAs elicited greater perceived threat about the issues featured in PSAs regardless of PSA types. Implications for policy-making and suggestions for future research are discussed.
Yongick Jeong, Gawon Kim, Chun Yang