As Humans Age, Their Ability to Focus on Nearby Objects

question 9

Multiple Choice

As humans age, their ability to focus on nearby objects deteriorates. This is the result of

• A) loss of rods and cones.
• B) increased viscosity of the aqueous and vitreous humor.
• C) stiffening of the lens and loss of accommodation capability.
• D) inappropriate response of the iris to varying light intensities.
• E) changing shape of the eyeball.

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Definitions:

Correlation Coefficient

A number ranging from -1.00 to +1.00 that expresses the direction (positive or negative) and strength of the relationship between two variables.

Variables

Elements, features, or factors that are liable to vary or change in studies or experiments.

Random Assignment

A method used in experiments to randomly allocate participants to different groups to reduce bias.

Continuous

Unbroken or uninterrupted in space, time, or sequence.