Ca2MgFe5Si8O22OH2 wrote:
1) are there any other groups of people besides those with ASD who frequently engage in rocking/stim behaviors?
Yep. People with intellectual disabilities do that. So do people who have "stereotypic movement disorder" (which is just a fancy name for somebody who has the habit of stimming but no other symptoms). People with Tourette's might have rocking as a tic. Some medications increase restlessness. Catatonia and movement disorders can result in repetitive movement too. And NT toddlers and younger will tend to stim just because they are still wiring their sensory systems together. ADHD people may stim because they feel restless. Very distressed NTs will stim sometimes to try to calm themselves (for example someone who has just lost a loved one may rock and hug themselves trying to deal with their grief). So stimming is quite common. It's just more pronounced and persistent in autistics.
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2) are most of your triggers emotional or are they more physical/sensory?
Cognitive. It's easier to think when I'm rocking. My stims are a lot like a cat's twitching tail--they represent not my physical or emotional state, but simply the level of mental and physical arousal. So if I'm paying close attention, thinking hard, anxious, happy, or experiencing anything intense, I tend to stim.