Behaviourism is a school of thought in psychology that focuses on observable behaviour over internal mental processes. Synonyms for behaviourism include behavioural psychology, behaviour modification, and stimulus-response theory. Behavioural psychology emphasises the role of environmental factors, such as learning, conditioning, and reinforcement, in influencing behaviour. Behaviour modification involves changing behaviour through positive and negative reinforcement. Stimulus-response theory suggests that behaviour is a result of the response to environmental stimuli. Other synonyms for behaviourism include behavioural theory, behavioural analysis, and behaviour management. These synonyms all point to a common belief that behaviour is a result of environmental factors and can be modified through various techniques.