Subjective ratings of dog optimism from owners (n = 11) and trainers (n = 11).

<p>Data rating refers to optimism category assigned based on the dog's variance score. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0107794#pone-0107794-t003" target="_blank">Table 3</a> for descriptions of ratings. Ratings are an ordinal scale ranging from 1 = optimistic to 5 = pessimistic.</p><p>Subjective ratings of dog optimism from owners (n = 11) and trainers (n = 11).