Test of the current knowledge (no learning prior to testing)
Learning situation
Learning situation (e.g., artificial grammar). Material presented during a learning phase. At the end of the learning phase, learning tested.
Repeated measures
Longitudinal study. Same data collected at different points in time.
Comparative Approaches
> Checking for Universality of principles
A comparative approach takes at least two forms, where language is concerned: the first involves the linguistic capacities of non-human primates, and the second involves cross-linguistic studies.