From Triad of Impairments to Dyad of Impairments

  • Autism Spectrum Disorders now has two categories of impairment instead of three, so a triad (triangle of issues) of impairments is replaced by a dyad (2 pillars of issues) of impairments. These are ‘social communication deficits’ (combining social and communication problems) and ’restricted/repetitive behaviours’.
  • ‘Language impairment/delay’ is no longer included and a new clinical feature; ‘unusual sensitivity to sensory stimuli’ has been introduced.
  • These will be explained in detail in the coming slides.