Participants allocated to the AVATAR therapy group were helped to use a computer program to develop an 'avatar' (image and voice) similar to the person or entity whose voice bothers you. The therapist then used this program in the therapy sessions to talk to participants with the avatar, and suggest coping skills which will lead to the voice gradually coming under control. If at any point participants found the avatar too distressing, they were able to turn it off.
Treatment comprised of 7 appointments, sessions were recorded and given to participants on a small MP3 player to take away and use at any time.
The audio recordings of therapy were listened to by the senior clinical researchers in charge of the study to ensure that treatment was delivered correctly.
Throughout involvement in the study all other care and treatment remained the same, unless changed by the particpant's consultant or GP.