WHAT IS A BEHAVIOUR? Behaviour is THE WAY in which one acts or conducts oneself. The range of manners in which individuals, organisms, systems, or artificial entities are acting in conjunction with themselves or their environment (whether animate or inanimate). THE WAY in which an animal or person responds to a particular situation/stimulus. THE WAY in which a machine or a natural phenomenon works or functions. CONSCIOUS ⇄ UNCONSCIOUS . OVERT ⇄ COVERT . VOLUNTARY ⇄ INVOLUNTARY . NORMAL ⇄ ABNORMAL . RATIONAL (?)