For a behaviorist, if being in love is a mental state, it would have to be

A) a sequence of behaviors, such as agitation in the presence of the loved one, writing long letters in the middle of the night, etc.
B) an inner feeling.
C) an aspect of an underlying mental substance.
D) impossible to observe.

Behaviorist

A proponent of behaviorism, a psychological approach which focuses on observable behaviors rather than internal phenomena such as thoughts and feelings.

Being In Love

The emotional state characterized by affection, attraction, and a deep sense of attachment towards another person.

Mental State

A mental state refers to a condition of the mind that encompasses feelings, thoughts, perceptions, moods, and emotions at a particular time.