Chapter 9 Section 4

Extent to which genetic factors can explain traits that vary from person to person

• heritability

• predictability

• validity

• nurture

______________ and ___________ both have some influence over a person's level of intelligence.

• heredity and environment

• height and weight

• age and health

• emotional health and physical health

Kinship studies have shown that the groups with the most similar IQ scores were

• parent and children

• brothers and sisters

• identical twins

• fraternal twins

The home environment and style of parenting

• have no effect on a child's intellectual functioning

• influence the development of a child's intelligence

• are the most important influence on a child's intelligence

• can cause a child's mental retardation

The Seattle Study found that intelligence can be maintained among older adults if they

• have flexible personalities

• attend cultural events

• have an intact family life

• do all of these

Most adoptee studies show that the IQs of adopted children are more like those of their

• biological parents

• adoptive parents

• biological siblings

• adoptive siblings

Graduates of Head Start centers are more likely to

• finish high school

• attend college

• earn high incomes

• all of these

About half of psychologists surveyed believe that the differences in IQ scores among people are the result of both environment and

• cultural bias

• heredity

• environement

• test-retest reliability