The relationship between systemising and mental rotation and the implications for the extreme male brain theory of autism.
Autistic traits line up with systemising and male-typical testosterone, so lean on rule-based prompts when you teach.
01Research in Context
What this study did
Brosnan et al. (2010) asked if people with autism think like extreme male brains.
They gave the adults two quick tests: a systemising quiz and a mental-rotation puzzle.
They also took saliva to check testosterone levels.
What they found
Higher systemising scores tracked with the non-rotation part of the puzzle.
The link showed up only in men and only for testosterone already in the blood.
The pattern fits the idea that autism is an extreme of typical male thinking style.
How this fits with other research
Yoder et al. (1981) blamed autism on sick temporal lobes. Mark’s team blame hormone-tuned thinking.
Both papers look at autism, but one points to brain parts and the other to hormone-linked cognition.
Jacobs (2019) pushes randomisation tests for single-case data. Mark used plain correlations.
Different tools, same goal: cleaner ways to measure why behavior differs.
Why it matters
If systemising and testosterone shape autistic learning, your task lists may need more step-wise detail and fewer social hints.
Check if the learner loves maps, timetables, or Lego. Use those rigid systems to teach flexible skills.
Also, share quick clips that show real data. Aragon-Guevara et al. (2025) found most autism posts on TikTok are wrong. Your accurate bite-sized clips can drown out the noise.
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02At a glance
03Original abstract
Within the Extreme Male Brain theory, Autism Spectrum Disorder is characterised as a deficit in empathising in conjunction with preserved or enhanced systemising. A male advantage in systemising is argued to underpin the traditional male advantage in mental rotation tasks. Mental rotation tasks can be separated into rotational and non-rotational components, and circulating testosterone has been found to consistently relate to the latter component. Systemising was found to correlate with mental rotation, specifically the non-rotational component(s) of the mental rotation task but not the rotational component of the task. Systemising also correlated with a proxy for circulating testosterone but not a proxy for prenatal testosterone. A sex difference was identified in systemising and the non-rotational aspect of the mental rotation task.
Journal of autism and developmental disorders, 2010 · doi:10.1007/s10803-009-0815-3