What enlarges and becomes less flexible and less transparent, making it more difficult to perceive images in sharp focus and to see in dim light?
a. retina
b. iris
c. cornea
d. lens
Answer: D
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Ritalin and Adderall, two medications prescribed for the treatment of attention deficit hyperactivity disorder (ADHD), act by ____
a. ?decreasing norepinephrine and increasing dopamine activity b. ?increasing norepinephrine and decreasing dopamine activity c. ?decreasing norepinephrine and decreasing dopamine activity d. ?increasing norepinephrine and increasing dopamine activity
A property of measurement in which assigning a score of zero indicates an absence of the variable being measured is _____
a. identity b. magnitude c. equal unit size d. absolute zero
Television programs such as Sesame Street and Dora the Explorer __________
a) have a positive effect on cognitive development. b) have a negative effect on cognitive development. c) have a mixed effect on cognitive development. d) have no effect on cognitive development.
The principal limitation of the information-processing perspective is that
A) it contradicts Piaget's theory of cognitive development. B) its components are difficult to reassemble into a broad, comprehensive theory of development. C) it provides an imprecise account of the mechanisms of cognitive development. D) it does not offer applications for teaching techniques that advance children's thinking.