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.
The term irrational is often used in psychotherapy and the concept of irrationality is especially known in rational emotive behavior therapy originated and developed by American psychologist Albert Ellis. In this approach, the term irrational is used in a slightly different way than in general.