The experiments with rats living in highly crowded cages suggest that
A) ?overcrowding leads to differences in the social interactions among rats.
B) ?overcrowding causes short life spans for most rats in crowded conditions.
C) ?rats become more fertile, hence leading to even more crowded conditions.
D) ?crowding eventually reduces the population to about 1/10 of its original size.
A
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According to the article PPll lease Pass the Vegetabll lesabout egocentricity in small children, Piaget's classic demonstration of egocentricity was called the:
(a) teddy bear in the cave task (b) three mountain problem (c) four stick dilemma (d) water-jar enigma
A key motor function of the reticular formation is to
a. directly excite spinal cord alpha motor neurons. b. facilitate movements through inhibition of the internal division of the globus pallidus. c. excite noradrenergic neurons within the substantia nigra. d. control muscle tone through the gamma motor system. e. control the activity of the cerebellum.