At the beginning of an action potential, sodium moves
a. slowly into the cell, because electrical force is offset by diffusion
b. rapidly into the cell, because both electrical force and diffusion operate at the same time.
c. slowly out of the cell, because as a positive ion, sodium remains attracted to the relatively negative intracellular environment.
d. rapidly out of the cell, because the sodium-potassium pumps are very active.
b
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Research on the association between parental behavior and quality of attachment has shown that children are most likely to be securely attached when . . .
a. Parents are consistently sensitive and responsive to the needs of their infants b. Parents ignore their infant’s wants but respond to his or her needs c. Parents consistently adopt a “tough love” approach d. None of the above
A woman has been receiving treatment for depression. The drug she has been prescribed is Fluoxtine. This means the drug will:
a. speed-up serotonin reuptake b. slow-down the reuptake of serotonin c. reduce levels of dopamine in the brain d. increase levels of dopamine in the brain
Which of the following statements is true regarding babbling?
Hearing babies will begin to babble at around 6–9 months of age, while deaf babies begin to babble much earlier. Babbling follows baby talk in the normal sequence of language development for all children. All babies will babble at around 6–9 months of age regardless of native language, hearing, or deafness. Babbling is found primarily in languages that have their roots in Latin. Children of Asian birth do not babble.
In the United States, nearly 80 percent of children grow up __________
A) in low-income households B) in single-parent families C) with at least one sibling D) with two working parents