It is difficult to distinguish between colors at night because ______
a) we are seeing primarily with the cones
b) rods do not adapt to the dark
c) we are seeing primarily with the rods
d) we are used to seeing mostly with the fovea
ANS: C, Rods are insensitive to color and thus when they are active you can only detect black and white shades.
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Angela is a proponent of "comprehensive sexuality education." Angela most likely agrees with what statement?
a. Abstinence is the best method of contraception. b. Sex education should not begin until late adolescence. c. Sex education should begin at an early age. d. Sex education leads to promiscuity.
What type of design follows the same group of people over time and data are collected on two or more occasions?
a. survey method b. longitudinal method c. cross-sectional method d. correlational method