Figure 1

Average performance in the bodyline task. (A) Mean size judgments given to each of the seven categories of body, which varied from very thin to very overweight. Error bars represent ± 1 s.e.m. The solid line represents the best fitting linear regression (slope 0.68, R² = 0.99). The dotted line represents linear use of the bodyline, without scaling. (B) Average precision thresholds, given by standard deviation of bodyline judgements, as a function of body category. Bars show 95% confidence intervals, almost all of which span the mean, suggesting that precision varied little with body size.