Serial position curve shouldn't exist. Nonsense syllables had meaning. Incomplete figures are filled in. Information is added through interpretation.
Lights appear to move when they flash.
Interpretation of the world changes through assimilation and accommodation. New behavior often appears spontaneously after what appears to be a planning stage. Subjects show surprise at outcomes, as if they expected something different. It couldn't be explained by simple S-R associations. There appear to be cognitive processes that are the basis for behavior.