Graphics in the form of video have been shown to be useful in presenting information to students. When designing graphic videos to optimize student learning, designers must take into consideration which elements will enhance student learning and which ones will hinder the process. In this study, the researcher presented two groups of engineering…

Two studies examined whether infants' category discrimination in an object-examination task was based solely on an ad hoc analysis of perceptual similarities among the experimental stimuli. Findings indicated that 10- to 11-month- olds' responses varied systematically only with the presence of a category change, but not with the degree of…