A sex-linked genetic disorder that affects approximately twice as many men as women is __________
a) Huntington's disease.
b) fragile-x syndrome.
c) sickle-cell anemia.
d) Tay-Sachs disease.
b
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Both humans and lower animals appear to be motivated to seek _________ stimulation
Fill in the blank(s) with correct word
What serves as the control for all other factors besides the manipulation of the independent variable?
a. the experimental setting c. the control group b. the experimental group d. all of these
In contrast to high school graduates, adolescents who drop out before they graduate are more likely to be
a. underemployed. b. unemployed. c. employed. d. none of these answers are correct.
Sylvia loves to play with her toy telephone. When she holds the receiver to her face and calls "Hi!" she is engaging in which type of play?
A) Sensorimotor B) First pretend play C) Substitute pretend play D) Rule-governed play