Consequential Validity
Definition
The fairness and equity implications of test use; includes disparate impact on racial or cultural groups and the systematic bias this may introduce into legal decisions.
- Field
- Forensic psychological assessment
- Concept
- Fairness and equity implications of test use
- Includes
- Disparate impact on racial or cultural groups
- Risk
- Systematic bias entering legal decisions
Common questions
How does consequential validity differ from a test's technical reliability and accuracy?+
Reliability and accuracy ask whether a test measures what it claims to measure consistently, while consequential validity asks about the real-world fairness of using the test's results, including whether certain groups are systematically disadvantaged even when the test is technically well-constructed.
Why does consequential validity matter specifically in a forensic legal context?+
A psychological assessment used in sentencing, competency, or custody decisions can materially affect a person's liberty or rights, so a test with a documented disparate impact on a particular group risks embedding that bias directly into judicial outcomes, not just producing a flawed score in isolation.
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...
- 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.
- Structured Professional Judgment (SPJ)
- Assessment approach that anchors clinical judgment to empirically validated risk-factor items while preserving room for case-specific integration.
- Validity
- The degree to which evidence and theory support the interpretation of test scores for a specific purpose; modern standards treat it as...