Understanding that development is shaped by biological, psychological, sociocultural, and life-cycle forces defines which feature of the life-span perspective?

Cultural variations are evident in whether people let their hair turn gray or whether they

Personality and intelligence, which are characteristics that are unique to each individual, are the result of:

__________ declines steadily starting at the age of 20 and rapidly after the age of 60.

Arthritis is an example of a(n)

______________ is the concept that the brain can reorganize its structure and function over time as it responds to environmental changes. 

Okinawans eat 40% less than the Japanese. Okinawa has 40 times as many people over the age of 100 than Japan. This provides evidence for which biological theory of aging?

Which of the following is not an additional change the coloring of light-skinned people undergoes with age?

Dalton and colleagues found that people with moderate to severe hearing loss were ___________________ to have functional impairments with tasks of daily life.

The research of Baltes and others suggest that life-span development consists of the dynamic interaction among which of the following? Select ALL that apply!