Definition. A theory that is based on the evolution of how a product moves through a four-step process, or life cycle, from beginning to end. This process begins with the introduction of the product, and then it moves on to the growth stage, the maturity stage, and ends with a decline in the product's sales.
The most influential version of this theory is put forward by B. F. Skinner in 1959. His version of Behaviourism is best known as Radical Behaviourism. Skinner, sought to give ethical grounding to behaviourism, relating it to pragmatism. Types of Behavioural Learning.
But the Law of Effect, which is a compact statement of the principle of operant reinforcement, was taken up by what became the dominant movement in American psychology in the first half of the twentieth century: Behaviorism. The founder of behaviorism was John B. Watson at Johns Hopkins university. His successors soon split into two schools: Clark Hull at Yale and Kenneth Spence at Iowa were neo-behaviorists. They sought mathematical laws for learned behavior.