A good theory is _____
a. empirically testable c. specific to only one behavior
b. still disorganized in some way d. all of these
A
A good theory is empirically testable, organized, and applicable to a variety of behaviors.
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When Jason is watching the Thanksgiving Parade, he perceives more distant objects as farther away because the lenses in his eyes change shape to focus on those objects. This cue for depth perception is called
A. accommodation. B. retinal disparity. C. eye convergence. D. motion parallax.
According to the "random events" theory, as spontaneous or externally caused mutations accumulate, __________.
a. cell repair becomes more efficient b. telomeres lengthen, protecting the aging cell c. cell replacement becomes more efficient d. abnormal cancerous cells are often produced
Which of the following is true regarding fertility awareness methods?
A) ?The large majority of American Catholics use these as their primary method of birth control. B) ?Other than the standard days method, fertility awareness methods are considerably less effective than most other forms of birth control. C) ?All four of the major fertility awareness methods are highly effective at preventing pregnancy. D) ?Fertility awareness methods are generally easier to use than other forms of family planning.
Which of the following is not a characteristic of friendship in middle-adulthood?
a. Nearly 95% of middle-aged adults report having friends. b. Most friends in midlife are old friends. c. Friendships improve with age. d. Middle-aged adults have more friends in midlife than in young adulthood.