Biological Medical Model in Abnormal Psychology or Biological Model Perspective approaches . A paradigm in psychology is a distinct way of describing, observing,  understanding, and predicting any given psychological phenomena. The professionals, as well as students, in order to conceptualize and organize the available information, need a model or paradigm. Also, it is required because it is used to test hypotheses and for conducting research work in order to testify the validity of assumptions. Includes assumptions about what drives human behavior, how disorders develop, and ...