Problem: Use this model for how it impacts identity development over a lifespan: The authors of racial identity development models tended to be academics following process-sensitive pursuits such as social work, counseling psychology, clinical psychology, and social personality psychology. Because their models attempt to describe the psychology of adults involved in social movements, the focus is on identity change and development as experienced by persons between the ages of late adolescence and adulthood. The contours of the models were drawn while each theorist was ensnarled in the middle of the process being deciphered; that is, they sketched while in the midst of identity change as a lived experience. Endemic to their process perspectives are four stages representing the analytic categories (1) before, (2) trigger, (3) middle, and (4) end, where before captures a description of the person's psychological state before the onset of identity change, trigger highlights the events or experiences that cause an "Aha!" moment and motivation for change, middle is the state of in-betweenness or identity in transition, and end refers to the internalization and habituation of the new. Need Assignment Help?