The of an emotion is the degree to which the emotion is reflected in an individual’s being active, engaged, or excited versus passive, disengaged, or calm.

arousal level

Explanation:

The emotional arousal level means to which degree physiological activity manifests as strong emotions: anger, fear, joy, in response to everyday experiences.

A classical examples is the "flight or fight" answer that an individual faces when something threats his security

Arousal is believed to be a reptilian mechanism in the lower brain most present in situations needed for survival.

Exciting or arising events will trigger arousal and have important impact on how people behave and percieve events.

answer; lead-based paint;

i believe the answer is: description

description refers to the goal of psychologist to identify the phenomenon that being observed. this goal is being actualized by collecting data/information from various clues that observed through the phenomenon. this goal must be accomplished before pyschologist able to create methods of treatment.