The ventricles of the brain contain ______.
A. air
B. blood
C. hormones
D. cerebrospinal fluid
Answer: D
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What is the primary concept in operant conditioning?
a. a conditioned stimulus is neutral b. conditioned response leads to extinction c. behavior is determined by its consequences d. negative reinforcement is the same as punishment
The brain is said to be __________ , since often one hemisphere of the brain serves a specialized role as the site of specific cognitive and emotional activities
clueless on this one!
Pleitropic genes, a specific gene or group of genes, affect
A) only one trait. B) more than one trait. C) emotional disposition in individuals. D) cognitive abilities, causing delayed development.
The 23rd pair of chromosomes in males contains the ___chromosome pair
a) XX b) XY c) YX d) YY