What exactly is a Randomised Control Trial (RCT)?
A RCT is the best design to test the differences between groups – in this case, the speech and language therapy group and the ACT NoW Visitor group. People are put into either of the groups at random (or, by chance) so there is no way for the researchers to have any effect on the outcome or the way people are put into groups. It is the fairest way to test the true differences between both groups.
