Looking good but tweeting bad? The social perception of orthodontic-related posts on Twitter and Instagram.

However, when entered into our regression models, this predictor had no significant effect on either perceived arousal (F (1, 217.67) = 0.79, p = .38) or dominance (F (1, 218.79) = 0.59, p = .44) and only achieved marginal significance with regard to perceived valence (F (1, 218.43) = 3.32, p = .07), indicating that female posters (EMM = 3.62, SE = 0.16) tended to be perceived as feeling slightly more positive than male posters (EMM = 3.43, SE = 0.18), albeit not within a conventional level of significance.

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Finally, neither posts containing a selfie with ( p = .09) nor without visible braces ( p = .85) had a conventionally significant effect on the odds of “feeling sad” rather than “feeling okay” as compared to posts containing no selfie at all, with the former however suggesting a marginally significant decrease (Exp(B) = 0.33; Table 4 ).

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