On a Four-Category Simultaneous Discrimination Experiment, Pigeons Demonstrated Their Categorical

Multiple Choice

On a four-category simultaneous discrimination experiment, pigeons demonstrated their categorical knowledge by pecking on

A) each of four pictured examples in the order in which the categories had been learned.
B) one of four available keys that was consistently associated with one of four concepts.
C) a category example different from four shown on each block of four trials.
D) the best example of a category from four shown on each trial.