Home visits to economically disadvantaged families increased maternal involvement with infants and secure attachment. The home visitors helped mothers
a. stop planning ahead for their fetuses.
b. accurately interpret infant cues.
c. encourage their children to play alone to avoid dependence.
d. know how to promote good nutrition and eating habits.
b
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Elvia and Britton are four years old and attend preschool together. Elvia is Latina and Britton is African American. Contact theory would predict Elvia and Britton to be less prejudiced under which of the following conditions? If their teacher ____.?
a. ?arranges activities so that Elvia and Britton do not directly compete b. ?frequently points out how exceptional Elvia and Britton are c. ?structures lots of activities in which Elvia and Britton must work together d. ?does nothing, because Elvia and Britton are young and their participation in an integrated environment is sufficient
Scientific hypotheses must be __________, while pseudoscientific hypotheses tend to be __________
a. testable; testable b. testable; untestable c..untestable; testable d. untestable; untestable
The various stages of sleep are easily distinguished by
a. visible changes in respiration. b. changes in motor movements involving speech. c. changes in the electrical activity of the brain. d. changes in consciousness. e. the quality and quantity of dreams.
Heterozygous genes cannot be expressed as:
A) a blend of the two alleles B) a combination of the two alleles C) the dominant allele D) the expression of the recessive allele