In terms of height and weight gains during early childhood:
a. boys and girls increase their amount of "baby fat."
b. boys and girls become more slender and lose some baby fat.
c. girls become heavier and taller than boys.
d. the growth rate speeds up compared to growth in infancy.
B
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When a response is strengthened because it is followed by the presentation of a rewarding stimulus, it is called
a. punishment. b. negative reinforcement. c. positive reinforcement. d. primary reinforcement.
Individual differences in the initial sensitivity to a drug's effects are thought to be determined by __________
a. classical conditioning b. expectancies c. genetics d. none of these
Steinhauser, Maier, and Hubner (2007) found an interaction between stress levels and cue-stimulus interval on a reaction time task
Indicate whether the statement is true or false
Which of the following is true of gene transfer?
A. Genes cannot be transferred into embryos. B. Transgenic animals cannot be created using embryos. C. Inserting a gene into an embryo will result in new genes in all the cells of the body. D. It is the process that creates a transgenic animal.