A trainer 1 provides training with respect to behaviour modification. A stimulus unit 4 provides an association with the trainer 1 and stimulus generator 4 to produce a stimulus post presentation of the trainer. The stimulus generating means 4 has a plurality of potential different stimuli types. The device comprises training means 1 and stimulus means 4 that generate at least two stimuli in time spaced apart relationship to each other to act as a distinct trigger so as to associate and recall the previous training. The stimulus generating 4 means makes available a number of stimulus phrases to an individual user for different environments expected by an individual user so one stimulus phrase is adopted by an individual user as their distinct trigger in an environment expected by the individual user. One stimuli is a personalised audio message with unique content.
