This was an active control group and included information on the proposed mechanism of the development of misophonia, how symptoms are reinforced, and basic coping skills.

Exposure has been successfully used in the treatment of anxiety disorders, phobias, and obsessions. There are also case reports showing its effectiveness in the treatment of misophonia. The proposed procedure is to expose the misophonic person to the triggering sound in a controlled and gradual manner until habituation/desensitization to the trigger occurs. In the current research setting, each participant was asked to choose the two misophonic sounds that are most disturbing.

The music used in the current study was adapted from the protocol used by Jastreboff and Jastreboff (2013) for the treatment of misophonia. It includes noises such as white (noise with equal volume in all octaves) or pink noise (noise that decreases by 3 dB per octave towards high frequencies) or relaxing instrumental music

At Week 0, the homework was to expose oneself to these sounds for 20 minutes a day, three days a week for three weeks.

At the Week 3 interview, the frequency and severity of the homework were adjusted based on the degree of improvement in the symptoms and the person's adherence to the instructions.

The difference between MTS Week 0 and MTS Week 6 was calculated, divided by MTS Week 0, and multiplied by 100, to elicit the percent change in MTS between Week 0 and Week 6.

It was rated by the investigator (KBA) based on her clinical judgement (0=some worsening, 1=no improvement, 2=some improvement, 3=moderate improvement, 4=much improvement). If there was a moderate to much improvement at any point, the case was rated as "improved"; and "not improved" if the score was little worsening, no improvement, or some improvement.