The behavioral approach is based on the concept of explaining behavior through observation, and the belief that our environment is what causes us to behave differently or suffer illnesses. The approach is only concerned with observable stimulus-response behaviors, and states all behaviors are learned through interaction with the environment.
he behaviorist movement began in 1913 when John Watson wrote an article entitled ‘Psychology as the behaviorist views it,’ which set out a number of underlying assumptions regarding methodology and behavioral analysis.
Behaviorism is different from most other approaches because they view people (and animals) as controlled by their environment and specifically that we are the result of what we have learned from our environment. Behaviorism is concerned with how environmental factors (called stimuli) affect observable behavior (called the response).
We learn new behavior through classical or operant conditioning (collectively known as ‘learning theory’).
Therefore, when born our mind is ‘tabula rasa’ (a blank slate).
Sources:
https://www.psychologistworld.com/issues/behavioral-approach
https://www.simplypsychology.org/behaviorism.html