Final answer:
Psychological disorders are believed to be largely influenced by stressful social situations rather than disturbances within individual personality. This belief is consistent with the assumptions underlying psychoanalysis.
Step-by-step explanation:
The belief that psychological disorders result largely from stressful social situations rather than from disturbances within the individual personality is consistent with the assumptions underlying the field of psychoanalysis. Psychoanalysis, developed by Sigmund Freud, emphasizes the influence of early childhood experiences and the unconscious mind on mental health. It suggests that social factors, such as family dynamics and societal norms, play a significant role in the development of psychological disorders.