Motion: 'the briefer the intervention, the more experienced and skilful practitioners need to be'
For...
You need to establish rapport before you can talk about the substance use and its treatment. If there is no rapport then there is no point to any kind of intervention; service users will not take in anything that is said to them, they will probably dislike their practitioner, and are likely to drop out.
Against...
Establishing rapport is important and needs to be part of dealing with the problem the service user wants help with. It is no good wasting time just trying to strike up some rapport. Service users want to know that they are going to get the help they need and that their practitioner has that as their focus.