When Keller and Marian Breland, two psychologists who became animal trainers, decided that it would be cute to have a pig drop a big wooden coin into a box, they found that
a. food was not an effective reinforcer for the pig and so learning didn't occur.
b. when given edible roots as reinforcers, the pig learned the task in less than ten trials.
c. the pig displayed instinctive drift by dropping the coin and pushing it around with its nose.
d. the pig showed intrinsic interest in the task and so reinforcement was unnecessary.
e. the pig would demonstrate learned helplessness.
c. the pig displayed instinctive drift by dropping the coin and pushing it around with its nose.
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The destructive beliefs and attitudes held by a society that are ascribed to groups considered different in some manner, such as people with mental illness are called
a) disorders b) stigmas. c) preconceived notions. d) discriminative categories.
Answer the following statements true (T) or false (F)
1 Invertebrates have a more hierarchically structured central nervous system than do vertebrates 2 A mouse has a larger cerebral cortex than does a snake 3 Evidence suggests that the human brain stopped evolving approximately 200,000 years ago when the first Homo sapiens appeared 4 Genes are made up of chromosomes 5 Genes are sections of strands of DNA that code for specific traits