Circularity of logic - the diagnostic tests utilised to define autism already operate within a framework of deficient empathy and features described by Baron-Cohen (2008) as ‘systematic’, therefore those diagnosed will inevitably score in a predictable fashion on these quotients.
“What we need to appreciate is that they [psychometric questionnaires] are maps and not the territory, metaphor and not the thing itself.” (Timini et al. 2011: 83).
Use of quotient questionnaires to measure personality are very reminiscent of psychometric personality testing, exemplified in the work of Eysenck and Rachman’s (1965).
Like Eysenck and Rachman (1965), Baron-Cohen (2008) suggests an underlying biological cause for differences on the empathising-systemising continuum.