According to the textbook, which one of the following conclusions is most true regarding factors that influence brain development?
a. Genetic factors have the strongest influence on brain development, particularly later in life.
b. Environmental factors and people's experiences have the strongest influence on brain development in middle childhood.
c. Together, brain development is shaped by genetic and environmental factors throughout the life span.
d. Environmental factors are particularly influential in abnormal brain development.
Question 2
Three of the following statements are consistent with research findings about factors that influence brain development. Which statement has not been supported by research?
a. Genetic factors predispose some people to learning difficulties or mental illness.
b. High levels of alcohol consumption during pregnancy can lead to mental retardation.
c. High levels of toxic substances (e.g., lead, pesticides) have their greatest negative impact after puberty.
d. Opportunities to learn certain skills may lead to detectable differences in brain structures or patterns of brain activation.
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