Conceptual model on replacement behaviour

The high replacement frequency of today is conflicting with the strife for a sustainable society. Replacement motivations of people are very diverse, but what people generally want is a well functioning and up to date product that meets their altering needs. This is what design for longevity should aim for! To do so, one has to have a good understanding of the replacement motives of people, and, during product development, one has to anticipate on upcoming possibilities and potential defectives. An extensive literature search has resulted in a conceptual model for understanding the factors influencing the replacement decision.