Author Question: About _____ percent of adults over age 90 have lost all functional vision. a. 7 b. 17 c. 27 d. ... (Read 18 times)

sammy · **on:** Jun 22, 2018

About _____ percent of adults over age 90 have lost all functional vision.

a. 7
b. 17
c. 27
d. 37

Question 2

A study finds that 100 percent of 20-year-olds, 70 percent of 40-year-olds, and only 40 percent of 60-year-olds are able to detect the scent of a single rotten egg in a 10- by 10-foot room. A developmental psychologist would most likely explain this change in terms of a(n)

a. Decrease in olfactory sensory threshold
b. Increase in olfactory sensory threshold
c. Decrease in cross-modality perception
d. Increase in cross-modality perception