Dels kognitive funktioner (evnen til at tænke, lære og huske), dels overordnede funktioner (en kombination af flere områder bestående af generel funktionsevne, kognitive symptomer, adfærd og evne til at udføre daglige aktiviteter).
The main measures of effectiveness were the change in symptoms in two main areas: cognitive (the ability to think, learn and remember) and global (a combination of several areas including general function, cognitive symptoms, behaviour and the ability to carry out everyday activities).