The psychodynamic and humanistic approach are similar in the fact they both
use interviews as one of their main methods of investigation. This shows how
they both take an idiographic approach to research and focus on the experiences
of the individual. However the psychodynamic approach has psychic determinism
where it argues behaviour is determined by our unconscious which we have no
control over whilst the humanistic approach states that all individuals have free
will and can choose how to behave in any given situation.