Research highlight: Carter & Wells (2018) evaluated the use of the attention training technique on auditory hallucinations in schizo-affective disorder in a single case study. The study tested the impact of ATT on frequency and duration of hallucination using a repeated return to baseline followed by an alternating treatment design, where the alternative intervention consisted of relaxation instructions. The results highlight that when ATT was introduced there was a decrease in auditory hallucination frequency and duration in comparison to baseline and control conditions. Alternatively, the relaxation intervention was associated with increase duration and frequency of auditory hallucination.