Enjoyment Scale: This scale has been validated for use in the adult population according to Graves et al. (2008). It consists of 18 items that assessed the level of pleasure / enjoyment from levels ranging from "I like" to "I hate" in that the higher the sum of these points, pleasure / enjoyment the activity performed provided. This scale was presented to participants at the beginning of each study session and the same to answer the end of each study session.