Title: Facial Expressions Source: Abelson and Sermat (1962) Description: Dissimilarities of facial expressions for 13 situations. Abelson and Sermat (1962) asked 30 students to rate each pair of the 13 pictures with facial expressions acted by a woman on a 9-point scale with respect to overall dissimilarity. Dissimilarity was defined as 'a difference in emotional expression or content'. For each subject, 78 proximities resulted, which were then rescaled over individuals by the method of successive intervals (Diederich et al., 1957). The means of these intervals were taken as the proximity data. The facial expressions are: 1 Grief at death of mother 2 Savoring a coke 3 Very pleasant surprise 4 Maternal love-baby in arms 5 Physical exhaustion 6 Something wrong with plane 7 Anger at seeing dog beaten 8 Pulling hard on seat of chair 9 Unexpectedly meets old boy friend 10 Revulsion 11 Extreme pain 12 Knows plane will crash 13 Light sleep