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Innovative quality assessments for psychologists

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"My clients always pay for their PRF assessment with a big smile after they get their results... A very useful instrument."
Dr. Paul Schmidt, Louisville, KY

Solutions for Psychologists

SIGMA's reputation for publishing quality assessments and providing innovative testing solutions is well established. One of our oldest instruments, the Personality Research Form (PRF), is among the most cited measures in personality research.  Two new instruments, the Nonverbal Personality Questionnaire (NPQ) and the Five-Factor Nonverbal Personality Questionnaire (FFNPQ), provide psychologists with unique cross-cultural tools.

Normal Personality

Five-Factor Nonverbal Personality Questionnaire (FF-NPQ)

Efficient and accurate image-based assessment of the 'Big 5' factors of personality.

Jackson Personality Inventory-Revised (JPI-R)

The JPI-R provides valid and reliable insight into respondents' abilities to function in a wide range of settings including work, organizational, leadership, and social situations.

Leadership Development Report (LDR)

The LDR is an expert system designed for individuals wishing to improve managerial and executive performance.

Multidimensional Emotional Intelligence Assessment (MEIA)

The MEIA is a 20-minute measure of EI that captures each of the 10 facets of Salovey and Mayer's (1990) influential EI model.

NEO Five-Factor Inventory-3 (NEO-FFI-3)

The NEO-FFI-3 is the updated version of the NEO-FFI - a quick, reliable, and accurate measure of the 'Big 5' domains of personality.

NEO Personality Inventory-3 (NEO-PI-3)

The NEO-PI-3 is the updated version of the NEO PI-R - a highly-regarded assessment of personality that is based on the Five-Factor model.

Nonverbal Personality Questionnaire (NPQ)

The item illustrations in the NPQ make it ideal for cross-cultural applications, and other areas where language may be an issue.

Occupational Stress Inventory-R (OSI-R)

The OSI-R is a concise measure of three (3) domains of occupational adjustment: occupational stress, psychological strain, and coping resources.

Personality Research Form (PRF)

The PRF is designed to yield scores for personality traits relevant to the functioning of individuals in a wide variety of situations.

Six Factor Personality Questionnaire (SFPQ)

The SFPQ encompasses and extends the popular 'Big 5' factors of personality.

Sex-Role Egalitarianism Scale (SRES)

The SRES was designed to measure attitudes toward the equality of men and women.

State-Trait Anger Expression Inventory-2 (STAXI-2)

The STAXI-2 is a 57-item inventory which measures the intensity of anger as an emotional state (State Anger) and the disposition to experience angry feelings as a personality trait (Trait Anger).

Survey of Work Styles (SWS)

The SWS is a 96-item, self-report questionnaire designed to assess six distinct components of the Type A behavior pattern.


Basic Personality Inventory (BPI)

The BPI is a multiphasic personality inventory intended for use with both clinical and normal populations to identify sources of maladjustment and personal strengths.

Coolidge Assessment Battery (CAB)

The CAB was designed by a clinical neuropsychologist, and has a threefold purpose: (1) to assess clinical syndromes on Axis I of the DSM; (2) to assess personality disorders according to the strict criteria on Axis II of the DSM; and (3) to evaluate neuropsychological functioning.

Carlson Psychological Survey (CPS)

The CPS is an instrument for the assessment and classification of criminal offenders, persons charged with crimes, and others who have come to the attention of the criminal justice or social welfare systems.

Dimensional Assessment of Personality Pathology - Basic Questionnaire (DAPP-BQ)

The DAPP-BQ is a revolutionary clinical measure supported by over 15 years of empirical research. It was designed to assess and help treat personality disorders along the full continuum - from mild to extreme trait manifestations.

Personality Assessment Inventory (PAI)

The PAI provides information relevant for clinical diagnosis, treatment planning and screening for psychopathology.

Psicologico Texto (PT)

The PT is a unique adaptation of the Carlson Psychological Survey (CPS), designed especially for use with the Spanish-literate criminal offender or substance abuser.

Psychological Screening Inventory-2 (PSI-2)

The PSI-2 is a brief mental health screening device ideal for situations where professional time and labor may be at a premium.

Reynolds Adolescent Depression Scale-2 (RADS-2)

The RADS-2 is an ideal tool to screen for adolescents with significant depressive symptoms within school assessment programs or individual practice settings.

Aptitude Measures

Multidimensional Aptitude Battery-II (MAB-II)

The MAB-II assesses aptitudes and intelligence. It yields a profile of ten subtest scores, and scores for Verbal, Performance and Full Scale.

Personnel Assessment Form (PAF)

The PAF is an efficient, accurate measure of general cognitive ability designed for easy administration and interpretation.

Online testing at SigmaTesting.Com

Simplify your testing program with the online test manuals, client control, detailed reports and export features of a SigmaTesting.Com account.

Ask Our Experts

Click here to ask a question about our assessments, or to view existing answers.


Aptitude FAQ: Frequently asked questions about our aptitude measures.

Bibliographies: Tap into the latest research on our assessments

Personality FAQ: Frequently asked questions about our personality measures.

Test Drive: Learn more about online testing by taking SigmaTesting.Com for a test drive

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