An external stimulus that prompts goal-directed behavior is a(n) ______
a. drive c. motive
b. incentive d. set point
B
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Which of the following is true about cones?
A. They are responsible for night vision. B. They are responsible for seeing fine details. C. They operate mainly at low light levels. D. They are responsible for seeing only black, white, and shades of gray.
Which of the following students best describes the conclusions about parents taking care of children?
a. Mike: "A father's gender-role orientation is not related to his tendency to take care of his children.". b. Carol: "In the past three decades fathers have increased their child-care responsibilities, but mothers still perform between 60% and 90% of child-care tasks.". c. Miles: "Canadian fathers perform a much higher proportion of child-care tasks than US fathers.". d. Selina: "Children show greater cognitive and social skills when mothers (rather than fathers) provide a high proportion of the child care.".
Rascalia is taking a drug that causes bizarre hallucinations and also has a stimulating effect. Though not a very addicting drug, it has nasty side effects that include panic attacks and permanent brain damage. Rascalia is most likely taking ____
a. ?LSD b. ?an amphetamine c. ?MDMA d. ?heroin
The characteristics of a(n) ________ allele are usually not reflected in a person's phenotype unless that person is homozygous for that trait
a. dominant c. alternate b. recessive d. enzymatic