Ethology, a biological theory, has its roots in theories of evolution and the concept of natural selection
Indicate whether the statement is true or false
TRUE
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Oblivia and her sister Deliria take the same classes. In the past, teachers praised Oblivia every time she spoke in class, but they praised Deliria only occasionally. This year, teachers never praise either one. What will happen? a. Obivia will give up more quickly
b. Deliria will give up more quickly. c. Both will give up equally fast. d. Whoever is the younger one will give up more quickly.
In boys, the physical growth spurt begins at about ____ years old.
A. 10-11 B. 11-12 C. 13-14 D. 15-16
Between-subjects designs allow the researcher to:
a. compare subjects at different points in time. b. factor out changes within subjects. c. compare between different groups of subjects. d. control threats to external validity.
One way that neonates' sleep is distinctive is that they spend a high proportion of their sleep in ____
a. alpha stage sleep b. a coma-like sleep c. a position that is face down d. rapid eye movement (REM) sleep