Baby Michael has normal hearing, but both of his parents are deaf and use sign language to communicate. During Michael's first year of life, they enroll him in day care in order for Michael to hear normal speech
a. because the first year is a sensitive period for learning to develop peer relationships.
b. because the first year is a sensitive period for language development.
c. because there is no sensitive period for language development, but a child must be exposed to normal speech at all times.
d. for none of these reasons.
B
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Drugs like Aricept and Namenda that are currently used to treat Alzheimer's disease tend to
a. have little measurable impact on behavioral or cognitive abilities. b. positively impact cognitive functioning and reduce behavioral problems, but not slow the progression of the disease. c. positively impact behavioral problems, but show little impact on cognitive functioning. d. positively impact cognitive functioning, reduce behavioral problems, and slow the progression of the disease in some individuals.
The most frequently reported nicotine withdrawal symptom is __________
a. insomnia b. anxiety c. irritability d. nicotine craving
Low sperm count is the most common infertility problem in men
Indicate whether the statement is true or false
Given the variation in magnitude of epigenetic change across the lifespan, when would the introduction of a toxin be most likely to produce lasting genetic effect?
A. Before birth B. Adolescence C. Adulthood D. Old age