Autistic adults highlighted the importance of stimming as an adaptive mechanism that helps them to soothe or communicate intense emotions or thoughts and thus objected to treatment that aims to eliminate the behaviour.

Furthermore, more recent theories have suggested that stimming may provide familiar and reliable self-generated feedback in response to difficulties with unpredictable, overwhelming and novel circumstances (e.g. Lawson, Rees, & Friston, 2014; Pellicano & Burr, 2012). As such, stimming may provide not only relief from excessive sensory stimulation, but also emotional excitation such as anxiety (Leekam, Prior, & Uljarevic, 2011). Consistent with these suggestions, autistic adults report that stimming provides a soothing rhythm that helps them cope with distorted or overstimulating perception and resultant distress (Davidson, 2010) and can help manage uncertainty and anxiety (e.g. Joyce, Honey, Leekam, Barrett, & Rodgers, 2017).

Reflecting the aims of popular interventions, language surrounding the topic of stimming is often pejorative (Jaswal & Ahktar, 2018). Researchers sometimes assume that stimming falls within voluntary control and has asocial or antisocial motivations (Jaswal & Ahktar, 2018; Lilley, in press). For example, a prominent review of repetitive behaviours in autistic people attributed the onset of stimming to a ‘self-imposed restricted environment’ (Leekam et al., 2011, p. 577). Stimming has become so associated with autism that some scientists and clinicians use the term ‘stims’ interchangeably with ‘autistic behaviour’ (Donnellan, Hill, & Leary, 2013). Furthermore, therapies continue to treat stimming despite lacking strong evidence of efficacy or ethics (Jaswal & Akhtar, 2018; Lilley, in press). While researchers increasingly acknowledge limitations in the under- standing of, and interventions for, stimming (e.g. Harrop, 2015; Patterson, Smith, & Jelen, 2010), treatments may remain popular, in part because many parents regard it as noticeable and stigmatising (Kinnear, Link, Ballan, & Fischbach, 2016).

Autistic people have become increasingly mobilised and vocal in defence of stimming. Autism rights or neurodiversity activists believe that stims may serve as coping mechanisms, thus opposing attempts to eliminate non-injurious forms of stimming (e.g. Orsini & Smith, 2010). They decry practices such as ‘quiet hands’ (which teaches the suppression of hand flapping), instead using ‘loud hands’ as a metaphor both for using such non-verbal behaviour to communicate and for cultural resistance more broadly (Bascom, 2012). In addition, autistic scholar-activists denounce attempts to reduce their bodily autonomy (Nolan & McBride, 2015; Richter, 2017) and declarations of their stimming as unacceptable or as necessarily involuntary (Yergeau, 2016).

Source: ‘People should be allowed to do what they like’: Autistic adults’ views and experiences of stimming – Steven K Kapp, Robyn Steward, Laura Crane, Daisy Elliott, Chris Elphick, Elizabeth Pellicano, Ginny Russell, 2019

Let us stim! I couldn’t cope without my stims, including the self-injurious ones. They are lifelong companions that I wouldn’t want to be without.

Suppressing coping stims is violence against a neurominority.