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Describe and Evaluate the Behaviourist Approach in Psychology

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The behaviourist approach was a dominant perspective in psychology from the 1920s to 1950. Behaviourists focus on the influence of the environment and study how humans are shaped through interactions with their environment.
Behaviourism is a scientific approach in psychology that advocates the use of strict experimental methods in order to study only observable behaviour in relation to the environment. Internal processes that the brain is capable of such as thoughts, emotions and rationalisation are overlooked. This contrasts with the cognitive approach which looks at thought processes and other unobservable activities that occur in the brain such as memory, thinking, problem solving. This also conflicts with the psychodynamic approach, as by only focusing on external observational behaviour, the unconscious mind’s influence on behaviour is not taken into account. However behaviouristic psychologists consider inner experiences to be too subjective and difficult to measure, therefore they will only use objective, scientific procedures such as laboratory experiments. This is to allow researchers to control very precisely the conditions and establish empirical evidence, thus making behaviourism a very scientific approach to psychology. This is a strength to behaviourism, as experiments are measurable and can be replicated, producing reliable and consistent results. However a limitation of this aspect of behaviourism is that the methods and settings used in behaviourist research such as laboratory experiments can create an artificial environment, causing participants to behave differently, and consequently producing results that may not be generalizable to real life. In other word laboratory experiments may lack ecological validity. Low ecological validity in behaviourist research can be demonstrated in the work of Watson and Rayner (1920s). They conducted an

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