Structurally, the nervous system has ______ major parts

In older adults, a higher level of social support is related to

lower levels of physical activity. a higher probability of being institutionalized. an early cognitive decline. a lower probability of depression.

Adolescents from lower SES families participate in fewer extracurricular activities because

A) they are more likely to be holding after-school jobs and are therefore less able to participate in extracurricular activities. B) only adolescents with more positive self-concepts participate in extracurricular activities. C) participating in extracurricular activities is related to higher levels of self-esteem. D) their communities offer a wider variety of extracurricular activities.