Here we present a protocol for familiarization-test paradigms which provide a direct test of infant categorization and help to define the role of language in early category learning.
LaTourrette, A., Waxman, S. R. Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms. J. Vis. Exp. (144), e59291, doi:10.3791/59291 (2019).