All 12 images clearly depicted either a dominant or a submissive body language
as verified by two independent raters. For the associated attribute discrimination,
two independent soccer experts (both in possession of the second highest UEFA
coaching license) rated a list of adjectives as being associated with a good soccer
player or with a bad soccer player. Following the expert ratings, we produced a list
of 12 attributes, of which 6 were associated with a good soccer player and 6 with
a bad soccer player (see third column of the last row in Figure 2).