Studies on the effects of adoption on a child's emotional development suggest that separating a child from a biological parent
a. will have less of an emotional impact if the child is adopted at three months of age or younger.
b. is unlikely to produce emotional difficulties if the child is adopted before one year of age.
c. is unlikely to produce emotional difficulties in the child regardless of the age at which the separation occurs.
d. will have less of an emotional impact if the child is adopted at eight months of age or older.
A
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Which research strategy is correctly matched with the type of validity it is aimed at minimizing?
A. using a double-blind design--internal validity B. replicating a study--internal validity C. using a representative sample--internal validity D. using a placebo--external validity
In order to compute a one-sample t test we must ______.
A. collect data from a sample of at least 100 B. measure our variable on an interval or ratio scale C. randomly select our sample D. compute the expected frequency of our sample
The loudness of a sound is determined by the __________ of sound waves
a. frequency c. consonance b. amplitude d. dissonance
Briefly discuss Freud's idea of the unconscious.
What will be an ideal response?