So far we have considered the strengthening or weakening of single identifiable responses. Although me of these responses complex, they are still identifiable as unitary acts. But much of our learning consists of acquiring patterns or sequences of behaviours, as in learning athletic skills or in memorizing a poem.
These patterns illustrate multiple-response learning, a kind of learning involving ore than one identifiable act, with the order of events usually fixed by the demand of the situation. To study this kind of learning psychologists have designed such laboratory tasks as mirror drawing, target tracking, and the last is largely verbal.