would Professor "Some of the headshops were only selling to over-18s, and some were only selling to people who appeared to be compos mentis
. In my research we found there were some responsible retailers."
I've known people have a single half and feel the effects whereas others could easily drink four or five pints and still be compos mentis
. There is no hard and fast rule that x amount of alcohol per 100mg of blood causes the same effects to all.
'They may be compos mentis
in a strict legal sense, but people do get more confused as they get older.'