Structured Professional Judgment (SPJ)
Definition
Assessment approach that anchors clinical judgment to empirically validated risk-factor items while preserving room for case-specific integration.
- Combines
- Empirical risk items and clinical judgment
- Domain
- Forensic risk assessment
- Distinguishes from
- Purely actuarial or unstructured methods
Common questions
How does SPJ differ from a purely actuarial risk score?+
An actuarial instrument mechanically combines scored items into a fixed statistical output, while SPJ requires the assessor to consider the same empirically validated risk items but still exercise professional judgment to weigh case-specific factors the fixed scoring might miss.
What is an example instrument that follows the SPJ approach?+
The HCR-20, used to assess risk of future violence, is a widely cited example, structuring the assessor's review around historical, clinical, and risk-management items rather than producing a single unexplained numeric score.
Related terms
- AUC Statistic
- Area under the receiver operating characteristic curve; the standard criterion-validity metric for forensic risk and malingering instruments, with 0.70 considered a minimum...
- Base Rate
- The prior probability of an event or proposition before specific evidence is considered. In forensic inference, the base rate is the probability...
- BSA 2023 § 39
- Section 39 of the Bharatiya Sakshya Adhiniyam 2023, the provision governing expert opinion evidence in Indian courts. Replaced Indian Evidence Act 1872...
- Consequential Validity
- The fairness and equity implications of test use; includes disparate impact on racial or cultural groups and the systematic bias this may...
- Criterion Validity
- The degree to which test scores predict or correlate with an external criterion; predictive criterion validity is most relevant to forensic instruments.
- Daubert Standard
- The US federal evidentiary standard (Daubert v. Merrell Dow Pharmaceuticals, 1993) requiring that expert testimony be based on scientifically valid methods with...
- Ecological Validity
- The degree to which a measurement or test procedure produces results that generalise from the controlled laboratory context to the real-world condition...
- Incremental Validity
- The improvement in predictive accuracy that a test adds over and above prior information; justifies the cost and burden of additional assessment.
- Positive Predictive Value (PPV)
- The probability that a person who tests positive on a risk instrument will actually reoffend. PPV depends on both the instrument's sensitivity...
- Reliability
- The extent to which a measurement procedure produces the same result when repeated under the same conditions or by a different researcher.
- Validity
- The degree to which evidence and theory support the interpretation of test scores for a specific purpose; modern standards treat it as...