Evidence suggests that many neurons die during development because
A) they are genetically programmed to die.
B) of their inability to compete successfully for their target's life-preserving chemicals.
C) of failures of regeneration.
D) both A and B
E) both B and C
Answer: D
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Which of the following is an accurate statement about the opponent-process explanation of drug addiction?
a. An increase in positive feelings will be followed by an increase in negative feelings. b. An increase in negative feelings will be followed by an increase in positive feelings. c. Both of these d. Neither of these
Adults who were securely attached as infants are more likely to
A) develop positive social biases. B) develop negative social biases. C) expect disapproval in social situations. D) withdraw from social situations.
By what age are babies first able to prominently open a hand and grasp a rattle?
A. 6 months B. 10 months C. 3 months D. at birth
Briefly explain cephalocaudal development in neonates.
What will be an ideal response?