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Inventory of Offender Risk, Needs, and Strengths™ (IORNS™)

Inventory of Offender Risk, Needs, and Strengths™ (IORNS™)
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Identify static, dynamic, and protective factors related to offender risk, treatment need, and management

Age range                          

18 to 75 years

Individual and group
15-20 minutes

Scoring time: 25 minutes

Inventory of Offender Risk, Needs, and Strengths™ (IORNS™)

Holly A. Miller, PhD

Written at a 3rd-grade reading level, the IORNS is a 130-item self-report measure that assesses static risk, dynamic risk/need, and protective strength factors as they relate to recidivism, treatment need, and management.

  • Consists of four indexes, eight scales, 14 subscales, and two validity scales.
  • T scores, percentiles, confidence intervals, and qualitative classifications are provided for the normative samples.
  • Can be administered and scored by persons who do not have training in forensic or clinical psychology or psychiatry, with supervision and interpretation by a licensed or certified professional.
  • Standardized and validated with offenders (men ages 18-75 years and women ages 18-60 years); offender samples included incarcerated and probated general and sexual offenders.
  • Community adult/college normative sample (men and women ages 18-75 years) approximates U.S. Census proportions (2003) for race/ethnicity and educational status.
  • Demonstrates significant correlations with self-reported criminal history variables, including number of nonviolent and violent crimes and number of times in jail/prison among male and female offenders.
  • Significantly related to self-reported criminal, familial, and substance use history variables (e.g., past physical and sexual abuse) among female offenders.

Product Items

IORNS Introductory Kit: IORNS Professional Manual, 25 Response Forms, and 25 Scoring Summary/Profile Forms
Item # MPS04-5888KT
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IORNS Response Forms (Pack of 25)
Item # MPS04-5890RF
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IORNS Scoring Summary/Profile Forms (Pad of 25)
Item # MPS04-5891PF
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