Cited by 440Criminal Law and PolicyCriminal Justice and Corrections AnalysisSubstance Abuse Treatment and Outcomes

The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index; 10 of the 85 sources its claims cite were checked for support.

What Can We Learn From The Portuguese Decriminalization of Illicit Drugs?

Open access
Hughes, C. E., Stevens, A.·2010·British Journal of Criminology

Abstract

The issue of decriminalizing illicit drugs is hotly debated, but is rarely subject to evidence-based analysis. This paper examines the case of Portugal, a nation that decriminalized the use and possession of all illicit drugs on 1 July 2001. Drawing upon independent evaluations and interviews conducted with 13 key stakeholders in 2007 and 2009, it critically analyses the criminal justice and health impacts against trends from neighbouring Spain and Italy. It concludes that contrary to predictions, the Portuguese decriminalization did not lead to major increases in drug use. Indeed, evidence indicates reductions in problematic use, drug-related harms and criminal justice overcrowding. The article discusses these developments in the context of drug law debates and criminological discussions on late modern governance.

Overview

Integrity signals

Registry

Crossref · 10.1093/bjc/azq038

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

59 Sources not found · 48 Own interpretation · 41 No basis given · 16 Own result · 13 Own method · 11 Not checked yet · 7 Partly supported · 4 No full text of the sources · 3 Supported · accuracy not yet measured

Show all 102 claims

  • Probably not a substantial claim. 52
  • It may state two separate claims as one. 59
  • The quote only partly states this claim. 2
100 of 100
  • The paper relies on this without support.

    Most public arguments about drug decriminalization are based on speculation rather than available evidence.

    “However, most public arguments are based on speculation rather than the available evidence on effects.”
  • The paper relies on this without support.

    No reports on the Portuguese decriminalization have appeared in English peer-reviewed journals.

    “but so far, no reports on it have appeared in English peer-reviewed journals.”
  • The paper relies on this without support.

    The Portuguese reform has been in force long enough to measure its effects.

    “The Portuguese reform has now been in force for almost nine years-time enough to measure the effects.”
  • The paper relies on this without support.

    Drug use, market changes, and drug-related crime are notoriously hard to measure by any means.

    “Drug use, market changes and drug-related crime is notoriously hard to measure by any means.”
  • The paper relies on this without support.

    There are few data on which to assess the long-term impacts of the CDT process.

    “There are few data on which to assess the long-term impacts of the CDT process.”
  • The paper relies on this without support.

    Figures have not yet been collected on prior or subsequent offending and drug use amongst those referred through the CDTs.

    “figures have not yet been collected on prior or subsequent offending and drug use amongst those referred through the CDTs.”
  • The paper relies on this without support.

    The primary aim of the CDTs is to dissuade drug use and encourage dependent drug users into treatment.

    “However, their primary aim is to dissuade drug use and to encourage dependent drug users into treatment.”
  • The paper relies on this without support.

    The qualitative research sample size was not large enough to reach data saturation.

    “The sample size was not large enough to reach data saturation”
  • The paper relies on this without support.

    At the start of the decriminalization process and national drug strategy, problematic drug use was the major concern.

    “Problematic drug use was the major concern at the commencement of the decriminalization process and national drug strategy.”
  • The paper relies on this without support.

    Drug-related death counts are affected by changes in recording practices as well as underlying drug use rates.

    “Drug-related deaths are subject to changes in recording as well as changes in underlying rates of drug use.”
  • The paper relies on this without support.

    Decriminalization is often discussed as if it is one simple, unitary concept.

    “Decriminalization is often discussed as if it is one, simple, unitary concept.”
  • The paper relies on this without support.

    Decriminalization is commonly restricted to cannabis alone.

    “This is important, as decriminalization is commonly restricted to cannabis alone.”
  • The paper relies on this without support.

    Many reforms are evaluated only early in their adoption, which may lead to underestimation of their true impacts.

    “Many reforms are evaluated only early on in their adoption, which may lead to underestimation of their true impacts.”
  • The paper relies on this without support.

    The trends in Spain and Italy provide a valid comparison to isolate effects specific to Portugal.

    “By comparing the trends in Portugal and neighbouring Spain and Italy, we can say that while some trends clearly reflect regional shifts”
  • The paper relies on this without support.

    The Portuguese experience is sufficiently relevant and transferable to serve as a model for other nations.

    “But it may offer a model for other nations that wish to provide less punitive, more integrated and effective responses to drug use.”
  • The paper relies on this without support.

    The statistical indicators and key informant interviews reviewed are adequate to identify changes since decriminalization.

    “the statistical indicators and key informant interviews that we have reviewed suggest that since decriminalization in July 2001, the following changes have occurred”
16 of 16

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

4 of 4

Citations

Cites

Show all 41 references

Research works printed but not linked: 2

  1. 1993, 88, 737
  2. 2009, REVISTA TOXICODEPENDENCIAS, 15, 19

Cited by

Sorted by citations

Items 201–300 of 437

Metadata

Authors
Hughes, C. E., & Stevens, A.
Affiliations
  • UNSW Sydney (AU)
  • University of Kent (GB)
Corresponding author
Hughes, C. E.
Venue
British Journal of Criminology
Published
2010-07-21
Volume
50
Issue
6
Pages
999-1022
ISSN
  • 0007-0955 (ISSN-L)
  • 1464-3529
OpenAlex
W2148618983
Cited by
440
References
41
Citations by year
2026: 33 · 2025: 50 · 2024: 16 · 2023: 56 · 2022: 18 · 2021: 25 · 2020: 25 · 2019: 29 · 2018: 31 · 2017: 19 · 2016: 51 · 2015: 24 · 2014: 19 · 2013: 18 · 2012: 18
FWCI
44.70
Type
journal article
Language
en
Open access
Locations
  • The British Journal of Criminology (publishedVersion)
  • Kent Academic Repository (University of Kent) (submittedVersion)
Funders
Beckley Foundation
Topics
  • Social Sciences › Law › Criminal Law and Policy
  • Social Sciences › Sociology and Political Science › Criminal Justice and Corrections Analysis
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
Keywords
drug decriminalization, Portugal, drug policy, drug use trends, drug-related harm, drug law, harm reduction, Spain, Italy

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

A language model drew the claims from the paper on 2026-09-28, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).

A second model labelled each claim on 2026-09-28 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).

Cited sources are checked with a language model’s help (gpt-6-sol).

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review