Physical and Cognitive Development in Late Adulthood 15

Question 1

What are some biological theories of aging?

Answer 1

evolutionary theory, cellular clock theory, free radical theory, sirtuin theory, the mTOR pathway theory, hormonal stress theory (Santrock, pgs. 373-374)

Question 2

Why does the weight usually drop after the age of 60?

Answer 2

Because of the loss of muscle mass. (Santrock, pg 377)

Question 3

Name three diseases that can impair the vision of older adults?

Answer 3

Cataracts, glaucoma, and macular degeneration (Santrock, pg. 378)

Question 4

Nearly 60% of U.S adults age 65 to 74 die of what two diseases?

Answer 4

Cancer or heart disease. (Santrock, pg.380)

Question 5

What is by far the most common type of dementia?

Answer 5

Alzheimer’s disease (Santrock, pg. 393)