Race categorization task in which participants are asked to respond 'black' or 'white' to faces presented for750 ms. The stimuli set comprises 16 face models (8 female; 8 male). Each model is presented in 11 racial morphing levels, totaling 176 trials +20 training trials. Response rate can be adjusted in an appropriate funcion (e.g., logistic) to calculate categorization threshold and slope. Developed by 'Grupo de Pesquisa em Percepção Visual' at University of Brasília, Brazil.