The STANDARD PREDICTOR (SP) proudly is the most powerful, easy-to-use, reliable and valid test of abuse and violence potential that is based on decades of peer reviewed scientific research. 

In an uncertain world, it pays to know your people. Crucial issues ranging from abuse and violence potential, communication, mental health and problem solving are essential and not always obvious. The STANDARD PREDICTOR (SP) can help detect critical matters with unparalleled authority in offering online testing.


The STANDARD PREDICTOR (SP) is normed on both males and females, and adults and teens.

Includes secure, permanent storage and convenient 24/7/365 administration with access to records, test results, and historical assessments on safe, backed up servers.

Utilizes AMMONS QUICK TEST (QT) A measure of critical communication and vocabulary.

BECK SCALE FOR SUICIDAL IDEATION A test used to assess depression severity.

RAVENS ADVANCED PROGRESSIVE MATRICES A widely used problem solving test.


  • The STANDARD PREDICTOR (SP) was made by Robert John Zagar and William M. Grove in 2010.
  • The STANDARD PREDICTOR (SP) has a standardization sample of 1,127 youth and 1,595 adults  followed for up to 12 years. 
  • The STANDARD PREDICTOR (SP) was validated by Robert Zagar and colleagues in 2013.
  • STANDARD PREDICTOR (SP) validation sample was 236 randomly selected teens and adults who worked in 120 different jobs. 
  • The STANDARD PREDICTOR (SP) predictive algorithm was replicated four times from 1989 to 2010.  
  • The STANDARD PREDICTOR (SP) for youth has an Area under the Curve (AUC) = .91).
  • The STANDARD PREDICTOR (SP) for adults is (AUC = .99), addressing these concerns about over- and under-identification.  
  • The STANDARD PREDICTOR (SP) has superb experimental design, robust statistics, excellent psychometric qualities, stability, internal consistency, test-retest reliability, divergent and convergent validity. 
  • The STANDARD PREDICTOR (SP) is an extension of 8 decades of research on “dangerousness” or “return to court” on three continents, 5 countries and 15 US states thus consistent with generalizability to the US/EU. 


  • Utilizes true and false, multiple choice questions.
  • Measures risk for abuse and violence.
  • Correlates well with the Wechsler Intelligence Scale, Vineland Social Maturity Scale, Bender Visual Motor Gestalt Test, Gates-MacGinitie Comprehension, Speed and Accuracy, and Vocabulary Tests and the Stanford Achievement Test.
  • Useful in academia, court, jails, prisons, emergency rooms, mental health clinics, hospitals, infrastructure agencies, industry, police, and research.
  • Reports a probability or percentile of risk for abuse and violence.
  • In finding violent prone there are false negatives and false positives and their associated costs.
  • Duration of testing average is 90–180 Minutes   

The STANDARD PREDICTOR (SP) addresses discrimination and subjectivity. Unlike a face-to-face interview, internet-based tests shield the analysis from bias introduced by knowing the age, appearance, education, ethnicity, gender, race, religion, or socioeconomic status (SES) of the person being examined. A lawyer cannot cross examine a computer algorithm about the decision-making test report that is generated with internet-based computer. A computer algorithm is consistent with policies and laws that prohibit discrimination and forbid subjectivity. Rather, an internet-based equation test report is consonant with the objective application of the evidence-based, peer-reviewed, scientific facts. The STANDARD PREDICTOR (SP) is inconsistent with the error that current ways (interviews, judgment, physical and psychiatric exams, short paper and pencil tests) that have a miss rate of 54% to 61%.

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