What Effect Does Age Have on the Size of the Thymus

question 48

Multiple Choice

What effect does age have on the size of the thymus?

• A)The size of the thymus increases continuously from birth to death.
• B)The thymus initially increases in size and then decreases in size from adolescence through old age.
• C)The thymus is not affected by age.
• D)The size of the thymus decreases continuously from birth to death.

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Definitions:

Reactivity

The alteration of the behavior of study participants due to their awareness of being observed.

Interval Scale

A type of scale used in measurements that expresses the order of variables and also establishes a defined distance between variables, but lacks a true zero point.

Ordinal Scale

A scale of measurement where objects or individuals are categorized based on some order or ranking, without information on the magnitude of differences.

Variable

Any event, situation, behavior, or individual characteristic that varies—that is, has at least two values.