Recent studies have suggested that individuals who exhibit heightened sensitivity also exhibit higher rates and severity of restricted interests and repetitive behaviours. This line of research has been conducted almost exclusively through caregiver reports of sensitivity. Here, a more rigorous psychophysics paradigm was applied to assess sensory…

Methadone clients scored higher than controls on measures reflecting boredom, desire for change and attraction to physically thrilling activities. Correlations of these measures with length of most recent dependency before treatment, time on program, and time since initial dependency suggest peculiarities of methadone clients antedated involvement…