Which of the Following Is TRUE About Research by Schaie

question 109

Multiple Choice

Which of the following is TRUE about research by Schaie and Salthouse?

• A)Both agree that adulthood is the time when the level of functioning in a number of cognitive domains is maintained or even increases.
• B)Salthouse recently has argued that his longitudinal research on aging and cognitive functioning should not be dismissed.
• C)Salthouse agrees with Schaie that cognitive functioning involving accumulated knowledge,such as vocabulary and general information,does not show early age-related decline but rather continues to increase at least until 60 years of age.
• D)Schaie has argued that reasoning,memory,spatial visualization,and processing speed begin declining in early adulthood and show further decline in the fifties.

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Definitions:

Carriers

Individuals who possess one copy of a mutated gene for a recessive genetic condition but do not exhibit symptoms of the condition themselves, though they can pass the gene to offspring.

Dominant Gene

A gene that is expressed in the phenotype even when only one copy is present in the genotype.

Genetic Characteristics

Traits and features that are determined by genes inherited from one's parents, affecting physical and sometimes behavioral aspects.

Recessive Genes

Genetic traits that require two copies, one from each parent, to be expressed in an individual's phenotype.