A perceptual set refers to

A) an unnoticed image that activates certain associated memories.
B) an inability to recognize familiar faces or voices.
C) a diminished sensitivity to an unchanging stimulus.
D) a mental predisposition that influences what we perceive.

Perceptual Set

A psychological framework that influences how a person perceives and interprets sensory information based on expectations, biases, and experiences.

Mental Predisposition

An inclination or tendency to think in a particular way, often beforehand or without complete information.

Unchanging Stimulus

A stimulus that remains constant and does not vary over time, often used in experiments to test sensory thresholds or responses.