Figure 4. Self-reported difficulty and accuracy ratings according to experience with dogs.

A) Difficulty ratings and B) accuracy ratings for interpretations of happy and fearful examples by experience group. Difficulty ratings: 1 = very easy, 9 = very difficult. Accuracy ratings: 1 = very inaccurate; 9 = very accurate. Error bars represent standard errors of the means. Model-fitted values account for effects of participant’s sex, participant’s age, and individual videos. Sig. pairwise comparisons (Sidak-corrected): Difficulty - Happy: All Others<Low-Exp; Fearful: Prof10+ = Prof<10< Own<Low-Exp. Accuracy - Happy: Low-Exp< Own = Prof10+; Fearful: Low-Exp< Own <Prof<10 = Prof10+.