John Witton
Overview
Explore the profile of John Witton including associated specialties, affiliations and a list of published articles.
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11
Citations
1300
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Recent Articles
1.
Gowing L, Ali R, Allsop S, Marsden J, Turf E, West R, et al.
Addiction
. 2015 May;
110(6):904-19.
PMID: 25963869
Background And Aims: Addictive behaviours are among the greatest scourges on humankind. It is important to estimate the extent of the problem globally and in different geographical regions. Such estimates...
2.
McCambridge J, Witton J, Elbourne D
J Clin Epidemiol
. 2013 Nov;
67(3):267-77.
PMID: 24275499
Objectives: This study aims to (1) elucidate whether the Hawthorne effect exists, (2) explore under what conditions, and (3) estimate the size of any such effect. Study Design And Setting:...
3.
McCambridge J, de Bruin M, Witton J
PLoS One
. 2012 Jun;
7(6):e39116.
PMID: 22723942
Background: The concept of demand characteristics, which involves research participants being aware of what the researcher is investigating, is well known and widely used within psychology, particularly in laboratory-based studies....
4.
McCambridge J, Butor-Bhavsar K, Witton J, Elbourne D
PLoS One
. 2011 Nov;
6(10):e25223.
PMID: 22039407
Background: The possible effects of research assessments on participant behaviour have attracted research interest, especially in studies with behavioural interventions and/or outcomes. Assessments may introduce bias in randomised controlled trials...
5.
6.
Ridge G, Gossop M, Lintzeris N, Witton J, Strang J
J Subst Abuse Treat
. 2008 Nov;
37(1):95-100.
PMID: 19004598
The study investigates patient preferences and beliefs and treatment program factors related to the decision to prescribe either buprenorphine or methadone to opiate-dependent patients. The sample (N = 192) was...
7.
Best D, Gross S, Manning V, Gossop M, Witton J, Strang J
Drug Alcohol Rev
. 2005 Dec;
24(6):483-8.
PMID: 16361204
The study uses a school-based sample to test the social and familial risk and protective factors relating to cannabis use. Based on a self-completion survey of 2078 14-16-year-olds (mean age...
8.
Gossop M, Trakada K, Stewart D, Witton J
Drug Alcohol Depend
. 2005 Aug;
79(3):295-302.
PMID: 16102373
Changes in criminal convictions were investigated among 1075 clients admitted to 54 drug misuse treatment services across England as part of the National Treatment Outcome Research Study (NTORS). Convictions data...
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10.
Arseneault L, Cannon M, Witton J, Murray R
Br J Psychiatry
. 2004 Feb;
184:110-7.
PMID: 14754822
Background: Controversy remains as to whether cannabis acts as a causal risk factor for schizophrenia or other functional psychotic illnesses. Aims: To examine critically the evidence that cannabis causes psychosis...