Newsome Et Al

Newsome et al.(1989) ,using the coherence of motion technique to study monkeys' perception of motion,found that

A) with a coherence level of 12.8% the monkeys' judgments of the direction of motion were correct less than 20% of the time.
B) with a coherence level of 12.8% the monkeys' judgments of the direction of motion were correct about 95% of the time.
C) with a coherence level of 3.2% the monkeys' judgments of the direction of motion were cor- rect about 95% of the time.