Which of the following are two reasons why mothers have historically been the primary caretakers of infants and toddlers?
A. racism and discrimination
B. biological and cultural bias
C. gender oppression and social laws
D. genetics and family expectations
Answer: B
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Which of the following is the best conclusion to draw from the massing versus spacing experiment discussed in the textbook?
A) Massing is better than spacing for all types of learning. B) Massing is better than spacing for studying vocabulary. C) Spacing is better than massing for all types of learning. D) Spacing is better than massing for studying vocabulary.
Reflexes:
a. disappear within six months after birth. c. have survival value. b. are unnecessary but exist anyway. d. never disappear.
In a myelinated axon, action potentials are produced
A. only at the axon hillock. B. only at the axon hillock and at the nodes of Ranvier. C. along the entire length of the axon membrane. D. only under segments of myelin.
The number of divisions a species will undergo before reaching replicative senescence is known as its_______
a. resistance limit b. telomere limit c. oxidative limit d. Hayflick limit