Check resonance with another autistic person

External behaviour misleads, especially in adults, because a lifetime of masking and compensation hides the underlying traits the criteria look for. So self-recognition works better through internal experience than through ‘do I act autistic?’. The practical test: find a first-person account from someone who knows they’re on the spectrum — matched as closely as you can on age, gender and culture, to control for confounds — and gauge how deeply their described inner life resonates with yours. High, unbelievable-degree resonance with another autistic person’s hidden struggles is a strong signal you’re on the spectrum too.

Three caveats make this safer. Connecting with autistic community — support groups, autistic creators — also reduces the felt need for external validation, so your identity stops depending on an outside authority’s confirmation. You don’t need an official diagnosis to warrant support; self-identification is widely treated as valid in autistic-led spaces, and if self-recognition resonates you can pursue support and community now. And treat the exploration as a floodgate event: strong resonance can open deep ‘who am I’ questions and a lot can surface at once, so line up a support network — ideally including autistic peers whose experience resonates — before you unpack it.