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Journal ArticleDOI

The accuracy of recidivism risk assessments for sexual offenders: a meta-analysis of 118 prediction studies.

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TLDR
Empirically derived actuarial measures were more accurate than unstructured professional judgment for all outcomes (sexual, violent, or any recidivism) and structured professional judgment was intermediate between the accuracy found for the actuarial Measures and for unstructuring professional judgment.
Abstract
This review compared the accuracy of various approaches to the prediction of recidivism among sexual offenders. On the basis of a meta-analysis of 536 findings drawn from 118 distinct samples (45,398 sexual offenders, 16 countries), empirically derived actuarial measures were more accurate than unstructured professional judgment for all outcomes (sexual, violent, or any recidivism). The accuracy of structured professional judgment was intermediate between the accuracy found for the actuarial measures and for unstructured professional judgment. The effect sizes for the actuarial measures were moderate to large by conventional standards (average d values of 0.67-0.97); however, the utility of the actuarial measures will vary according to the referral question and samples assessed. Further research should identify the psychologically meaningfully factors that contribute to risk for reoffending. (PsycINFO Database Record (c) 2009 APA, all rights reserved).

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Journal ArticleDOI

Rehabilitating criminal justice policy and practice.

TL;DR: The Risk-Need-Responsivity (RNR) model has been shown to reduce offender recidivism by up to 35% as mentioned in this paper, which describes who should receive services (moderate and higher risk cases), appropriate targets for rehabilitation services (criminogenic needs), and powerful influence strategies for reducing criminal behavior.
Journal ArticleDOI

Assessing Risk for Sexual Recidivism: Some Proposals on the Nature of Psychologically Meaningful Risk Factors:

TL;DR: The authors propose that the basic requirements for a psychologically meaningful risk factor are (a) a plausible rationale that the factor is a cause of sexual offending and (b) strong evidence that it predicts sexual recidivism.
Journal Article

False Positives, False Negatives, and False Analyses: A Rejoinder to "Machine Bias: There's Software Used across the Country to Predict Future Criminals. and It's Biased against Blacks"

TL;DR: The authors pointed out that ProPublica's report was based on faulty statistics and data analysis, and that the report failed to show that the COMPAS itself is racially biased, let alone that other risk instruments are biased.
Journal ArticleDOI

The accuracy, fairness, and limits of predicting recidivism.

TL;DR: It is shown that the widely used commercial risk assessment software COMPAS is no more accurate or fair than predictions made by people with little or no criminal justice expertise.
Journal ArticleDOI

A comparative study of violence risk assessment tools: a systematic review and metaregression analysis of 68 studies involving 25,980 participants.

TL;DR: A tool designed to detect violence risk in juveniles, the Structured Assessment of Violence Risk in Youth (SAVRY), produced the highest rates of predictive validity, while an instrument used to identify adults at risk for general offending, the Level of Service Inventory-Revised (LSI-R), and a personality scale commonly used for the purposes of risk assessment produced the lowest.
References
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Book

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TL;DR: The concepts of power analysis are discussed in this paper, where Chi-square Tests for Goodness of Fit and Contingency Tables, t-Test for Means, and Sign Test are used.
Book

Statistical Methods for Meta-Analysis

TL;DR: In this article, the authors present a model for estimating the effect size from a series of experiments using a fixed effect model and a general linear model, and combine these two models to estimate the effect magnitude.
Journal ArticleDOI

In search of how people change: Applications to addictive behaviors.

TL;DR: In this article, the authors summarized research on self-initiated and professionally facilitated change of addictive behaviors using the key transtheoretical constructs of stages and processes of change.
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Meta-analytic procedures for social research

TL;DR: In this paper, the authors define research results, retrieve and assess research results and compare and combine research results to combine probabilities, and evaluate meta-analytic procedures and meta-Analytic results.
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