st have some motivation to imitate model's behavior
             Insight learning is marked by sudden solution to problem, "ah-ha" experience
             Chimp, Sultan, put in room with banana hanging from ceiling out of his reach
             After trying unsuccessfully to reach banana, he paced restlessly
             Then, he moved box under banana, climbed onto it, and grabbed banana
             Similar experiment done later with Sultan given several sticks, none of which was long enough to reach banana
             Tried but could not reach food, gave up
             Suddenly put two sticks together, then knocked banana down within reach
             Developing insight aided by previous experience
             PSY 2301 - MODULE 7: CONSCIOUSNESS, SLEEP & DREAMS
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