This 28-question self-test has been developed as a screening test for Dissociative Identity Disorder, formerly known as Multiple Personality Disorder.
Completing this Psychological Screening Test
This questionnaire consists of twenty-eight questions about experiences that you may have in your daily life and asks how often you have these experiences. It is important, however, that your answers show how often these experiences happen to you when you are not under the influence of alcohol or drugs.
To answer the questions, please determine to what degree the experience described in the question applies to you and choose the button which corresponds to the percentage of the time you have the experience. The left of the scale, labelled ‘Never’, corresponds to 0% of the time, while the right of the scale, labelled ‘Always’, corresponds to 100% of the time; the range covers 0% to 100% in 10% increments.
Take the Quiz
Please note: This test will only be scored correctly if you answer each one of the questions. Please also check our disclaimer on psychological testing and our psychological testing privacy guarantee.
About Scoring this Psychological Questionnaire
When your quiz is scored, one of two different information pages will appear to describe the results for scores in your range, along with further details of how your score was computed. Roughly speaking, the higher the score, the more likely a diagnosis of a dissociative disorder.
This screening test for Dissociative Identity Disorder is scored by totalling the percentage answered for each question (from 0% to 100%) and then dividing by 28: this yields a score in the range of 0 to 100.
Generally speaking, the higher the DES score, the more likely it is that the person has DID. In a sample of 1,051 clinical subjects, however, only 17% of those scoring above 30 on the DES actually had DID.
The DES is not a diagnostic instrument. It is a screening instrument. High scores on the DES do not prove that a person has a dissociative disorder; they only suggest that clinical assessment for dissociation is warranted. People experiencing DID do sometimes have low scores, so a low score does not rule out DID. In fact, given that in most studies the average DES score for a DID person is in the 40s, with a standard deviation of about 20, roughly 15% of clinically diagnosed DID patients score below 20 on the DES.
The figure shown below plots DES scores (horizontal scale) versus the number of subjects (vertical scale) from a sample of 1055 people. For further information about the DES, its validity and scoring, please visit the Ross Institute.
The Dissociative Experiences Scale (DES) was developed by Eve Bernstein Carlson, Ph.D. and Frank W. Putnam, M.D.