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Personality Inventories

Armand W. Loranger, PhD

Assesses normal and abnormal personality traits
Paper and pencil, Download
Age range:
18 years to 74 years
60-90 minutes for OMNI; 35-45 minutes for OMNI-IV
Qualification level:
A degree, certificate, or license to practice in a health care profession or occupation, including (but not limited to) the following: medicine, neurology, nursing, occupational therapy and other allied health care professions, physician's assistants, psychiatry, social work; plus appropriate training and experience in the ethical administration, scoring, and interpretation of clinical behavioral assessment instruments. Certain health care providers may be eligible to purchase selected "B" and "C" level instruments within their area of expertise. Specifically, relevant supervised clinical experience using tests (i.e., internship, residency, etc.) in combination with formal coursework ( i.e., Tests and Measurement, Individual Assessment, or equivalent) qualifies a health care provider to purchase certain restricted products. Any PAR Customer already qualified to purchase a "B" or "C" level product, is also qualified to purchase an "S" level product. If you are not already qualified to purchase a "B"or "C" level product from PAR, please download and complete the special Qualification Form for Medical and Allied Health Professionals. (You will need Adobe Acrobat to view.) Close

The 375-item OMNI measures both normal and abnormal personality traits. Composed of seven factor scales, it assesses 25 normal traits (Normal scales) and 10 abnormal traits (Personality Disorder scales). Derived directly from the OMNI, the 210-item OMNI-IV measures abnormal personality traits and assesses personality disorders; it comprises 10 Personality Disorder scales.

Features and benefits

  • Personality Disorder scales are based on the DSM-IV Axis II personality disorder criteria.
  • A Variable Response Inconsistency scale identifies item response inconsistencies; a Current Distress scale assesses the respondent's mental state during the 7 days preceding the test date.
  • Both tests require a fourth-grade reading level.
  • Both tests demonstrate internal consistency, reliability, and concurrent validity.

Test structure

The OMNI and the OMNI-IV must be scored using OMNI/OMNI-IV software, which is included in both OMNI kits. The tests can be administered on-screen (using a Counter Serial Number), or you may hand enter responses into the software. The software generates an interpretive report that includes a broad range of information about the individual's personality characteristics and deviations from normality using the language and typology of the DSM-IV Axis II classification of personality disorders.