Table 1.
Dog breeds.
Figure 1.
Exemplary images for the positive and negative conditions.
The human infant in the figure was not used in the actual study. His guardians gave written informed consent, as outlined in the PLOS consent form, to publication of his photographs.
Table 2.
Lexical and Sublexical Characteristics of Linguistic Stimuli.
Figure 2.
Accuracy and reaction time data from the implicit task.
Both human and dog faces elicited significant priming in accuracy and reaction times. Target words were responded to faster and more accurately when they were affectively congruous, as compared to incongruous, with the preceding prime.
Figure 3.
Interindividual differences in the reaction times of the implicit task.
For both human and dog faces, women, but not men, showed significant priming (top row). For dog faces only, non-dog owners, but not dog owners, showed significant priming (bottom row).
Figure 4.
Rating results of the explicit task for full (left) and cropped (right) faces.
Experimental images were rated as more positive and more negative than respective baseline images regardless of species. This effect was smaller in cropped than in full faces.
Figure 5.
Interindividual differences in the rating results of the explicit task.
Female dog owners were better at differentiating experimental from baseline i mages than female non-dog owners. There was no such difference between male dog and non-dog owners.