Critique of Article Randomised Controlled Trial of Motivational Interviewing Compared with Drug Information and Advice for Early Intervention Among Young Cannabis Users

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Critique of Journal article
The article being critiqued is titled; Randomised controlled trial of motivational interviewing compared with drug information and advice for early intervention among young cannabis users written by Jim McCambridge, Renee L Slym and John Strang published in 2008 in the journal Addiction, pages 103-111. Cannabis is the most widely used illegal drug and poses many physical, social and psychological risks especially in young people, it seems that even with the current primary interventions which aim to prevent the drug being used altogether they have not always proved effective in stopping young people from taking up the drug and so a secondary prevention is need for those already taking the drug. The main aim of the study is to test the effectiveness of Motivational interviewing (MI) in securing reductions in drug related risk amongst young cannabis users who have not sought help compared to just supplying users with drug information and advice. This was attempted through a randomised control trial (RCT) of young people at further education colleges in inner London. One group’s intervention would consist of a session of MI and the other group would be given drug information and advice (DIA) with the primary hypothesis that MI would reduce the mean frequency of cannabis use in the last month better than DIA. The study found no difference between the two interventions, it was thought that this was because MI fidelity was low and so concluded that further study into the consequences of low MI fidelity must be undertaken and also that advice on its own could prove to be effective and must also be studied further. The study employed an RCT which are considered to be a very reliable form of scientific evidence (Guyatt et al, 2008) and with a parallel groups design as used in this study, they allow two groups to be studied in exactly the same way apart from the treatment each group receives so for simply comparing one type of intervention to...
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