Psychodynamic Approach

The psychodynamic perspective includes all the theories in psychology that see human functioning based upon the interaction of drives and forces within the person, particularly unconscious between the different structures of the personality. 

The words ‘psychodynamic’ and ‘psychoanalytic’ are often confused. Remember that Freud’s theories were psychoanalytic, whereas the term ‘psychodynamic’ refers to both his theories and those of his followers. Freud’s psychoanalysis is both a theory and a therapy.
The greatest criticism of the psychodynamic approach is that it is unscientific in its analysis of human behaviour. Many of the concepts central to Freud's theories are subjective and as much impossible to scientifically test. For example, how is it possible to scientifically study concepts like the unconscious mind or the tripartite personality? It this respect the psychodynamic perspective is unfalsifiable as the theories cannot be empirically investigated.