Behavioural vs. Behavioral: What's the Difference?

Behavioural and Behavioral Definitions
Behavioural
(British spelling) Of or pertaining to behaviour.
Behavioral
The manner in which one acts or behaves.
Behavioural
Of or relating to behavior;
Behavioral sciences
Behavioral
The actions or reactions of a person or animal in response to external or internal stimuli.
Behavioral
One of these actions or reactions
"a hormone ... known to directly control sex-specific reproductive and parenting behaviors in a wide variety of vertebrates" (Thomas Maugh II).
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Behavioral
The manner in which something functions or operates
The faulty behavior of a computer program.
The behavior of dying stars.
Behavioral
(American spelling) Of or relating to behavior.
Behavioral
Of or pertaining to behavior.
Behavioral
Of or relating to behavior;
Behavioral sciences