The number of ‘healthy’ and the number of ‘sick’ judgments made by 62 subjects shown the 32 individual photographs (16 infected with the lps virus and 16 injected with a placebo saline solution) one at a time. The data are from Axelsson et al. (2018). The frequencies are aggregated across all subjects.
Rating Placebo (s0) Virus (s1)
healthy 1028 702
sick 440 775