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 …

… Analyzed the data: J McCambridge. Collected data/did experiments for the study: J
McCambridge, J McAlaney. Wrote the first draft of the paper: J McCambridge. Contributed to the …

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 …

Aim To test whether a single session of motivational interviewing (discussing alcohol,
tobacco and illicit drug use) would lead successfully to reduction in use of these drugs or in …

… J McCambridge led drafting of the text of the report. … In today's Lancet, David Leon and Jim
McCambridge 1 show that … But Leon and McCambridge show that Great Britain has recorded …

In many countries opiate overdose remains the main source of the 10-fold excess mortality
among opiate addicts, notwithstanding the effects of HIV/AIDS. 1 Treatment reduces mortality …

… Our modified survey (Hartman & McCambridge, 2010) has been successfully used in both
undergraduate and graduate communication classes and in executive development programs …

Life course epidemiology may be conceptualised as “the study of long term effects on later
health or disease risk of physical or social exposures during gestation, childhood, …

… McCambridge J, Kypri K: Can simply answering research questions change behaviour?
Systematic review and meta analyses of brief alcohol intervention trials. PLoS One. …

Background Participant reports of their own behaviour are critical for the provision and
evaluation of behavioural interventions. Recent developments in brief alcohol intervention trials …