In his study of thinking, Duncker found that the second step in problem-solving based on understanding is to
a. propose a number of functional solutions.
b. determine the general properties of a correct solution.
c. enumerate all the implicit actions for solving the problem.
d. approach solutions using a trial-and-error method.
A
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After Les touches a hot iron, he pulls his hand away almost instantaneously. The command from the brain that instructed Les's muscles to pull his arm away so quickly was passed along by the ____.?
a. ?glia b. ?spinal cord c. ?pain neurons d. ?corpus callosum
As children watched, Dr. Vallance poured the same amount of juice into two identical glasses. Then she poured the juice from one of those glasses into a taller, narrower glass. When asked which glass now has more juice, children in the concrete operational stage say that:
A) the tall glass has more. B) both glasses have the same amount. C) they don't know. D) the tall glass has less.
Recent research has shown that some girls tend to go through puberty earlier than others. What scenario most likely creates early onset of puberty?
a. Damini, whose mother was only 17 years old when she had Damini b. Brandi, who lives with only her father and shares a room with her younger sister c. Elizabeth, who lives with her mom and her step-father but doesn't see her dad at all d. Beverly, who has an eating disorder and has been severely underweight for three years.
The increase in single parenthood in the U.S. in recent decades is largely accounted for by the increase in the proportion of children born to cohabiting couples.
a. true b. false