aim

sample

what was Alex already familiar with?

operational definition: response

categorical labels

why was Alex required to choose from 3 categories instead of 2?

controls used in the task

questions asked to prevent fatigue effects

results for familiar objects

results for novel objects

why might Alex have performed better on the novel trials?

why was Alex trained despite his considerable vocabulary?

frequency & duration of
training sessions

training method

what questions was Alex asked during trials?

procedure: trial

correction procedure