A two-month-old infant would be able to do all EXCEPT
a. recognize its mother.
b. smile socially.
c. roll from back to side.
d. lift its head and hold it erect and steady.
e. reason abstractly.
e. reason abstractly.
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Which model of basic acquisition predicted that the extinction of the CR that was acquired during Stage 1 of the higher-order conditioning in Exercise 17 will also extinguish the CR that was acquired during Stage 2?
a. S-R, S-R b. S-S, S-S c. S-S, S-R d. Both a and c
The percentage of the human population lost to war today has decreased since the time of the hunter–gatherers. One possible reason is that between-group violence has been reduced by ____
a. ?increasing economic dependencies among nations b. ?evolutionary genetic changes c. ?lower testosterone levels among males d. ?changes in child-rearing practices and values
Researchers assessed the personalities of the children who were adopted at an early age by Julene and Jay. The researchers compared the children's personalities to those of their biological and adoptive parents. Based on the studies described in the text, the children's personalities will be most similar to ____
a. ?Julene's and Jay's personalities. b. ?Julene's, but not Jay's, personality. c. ?their biological parents' personalities d. ?their classmates' personalities
You read a study in a journal. You know that the results of the study can be verified. This is because in science, observations can be:
a. self-correcting. b. verified by anyone. c. theoretically interpreted. d. reviewed through tenacity.