Final answer:
The given statement "In order to have a personality disorder, one must deviate from at least two of the four criteria" is false because In order to receive a diagnosis, an individual must meet the specific criteria for a particular disorder, which include enduring and inflexible patterns of behavior that deviate from cultural norms and cause significant distress or impairment.
Step-by-step explanation:
Personality disorders are diagnosed based on a set of criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM). The DSM currently recognizes ten different personality disorders, such as borderline personality disorder and narcissistic personality disorder. In order to receive a diagnosis, an individual must meet the specific criteria for a particular disorder, which include enduring and inflexible patterns of behavior that deviate from cultural norms and cause significant distress or impairment.