Intensity

Definition

In psychology, intensity refers to the strength or force of a stimulus. It's often used in relation to sensory perception, such as the loudness of a sound or the brightness of a light.

Related terms

Threshold:

This is the minimum level of stimulation required for an organism to detect a stimulus 50% of the time.

Decibel: A unit used to measure sound intensity.

Just Noticeable Difference (JND):

The smallest difference in stimulation that can be detected 50% of the time; also known as difference threshold.