What percentage of adults over the age of 80 years has impairments in taste and smell?

Which of the following statements about individual differences in cognitive declines is true?

A) Cognitive declines occur earlier in people with complex occupations. B) People with flexible personalities are likely to maintain mental abilities well into late adulthood. C) There is no known correlation between SES and intellectual decline. D) Early retirement, whether forced or by choice, contributes to rapid intellectual decline in older adults.

When a light is shone in the periphery of the receptive field of an on-center cell,

A) there is an immediate period of inhibition and then a burst of firing when the light is turned off. B) the firing of the cell is increased until the light is turned off. C) the firing of the cell is inhibited after the light has been turned off. D) the cell is silent until the light comes on again. E) the cell is almost silent until the light comes on again.