Hans and Franz lift weights at their local gym. When their trainer adds a twopound weight to Hans's normal 50 pound load, Hans immediately notices. However, when the same twopound weight is added to Franz's normal 200 pound load, he isn't aware of the extra weight. The difference in Hans's and Franz's experience is consistent with
a. absolute threshold theory.
b. difference threshold theory. c. Weber's Law.
d. signal-detection theory.
e. Gestalt laws of perceptual organization.
c
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An animal who has been reinforced on a variable-interval schedule of reinforcement will
respond a. rapidly, receive the reinforcer, pause a little, and respond again. b. more rapidly with each succeeding reinforcement. c. at a slow, steady rate. d. faster than it would on a variable-ratio schedule. e. highly erratically.
Marquita and Monette are fraternal twin sisters who just turned 75. Their families threw a big birthday party for them, and the sisters spoke on the phone with each other the next day. Marquita was still feeling elated about their special day. She talked with Monette about how, looking back at her life, she feels like even though she's just one little person she has had purpose and made a difference in people's lives. Monette is feeling the opposite. She feels bitter about the way her life has turned out, with failed marriages and ungrateful children and grandchildren. She is more depressed than ever because the party reminded her how unhappy she is. What psychosocial stage does this represent?
A. identity versus role confusion B. ego integrity C. industry over inferiority D. initiative versus guilt
By age 6, the average child has a vocabulary of around ___________ words
a) 12,000 b) 10,000 c) 8,000 d) 14,000
For a male Betta splendens, the sight of another male can act as a
A) ?releasing stimulus. B) ?positive reinforcer. C) ?Both a and b are correct. D) ?Neither a nor b is correct.