logo

Assistance Dogs and Autism Ranking: Insufficient/Mixed evidence

Status Research

There are a number of significant limitations to all of the research studies published to date. For example

  • the majority of the studies (four out of six) had a very small number of participants (between one and 12)
  • the majority of the studies (four out of six ) did not use an experimental design (such as a randomised controlled trial)
  • the study that did use an experimental design (Groomes et al, 2014) was a non-blinded randomised controlled trial that only included 12 participants.
  • the study that used a controlled parental survey (Burgoyne et al, 2014) relied on findings based on self-reports and parents' / guardians' personal perceptions which are subject to participant overestimation, recall bias and possible subject expectancy effects.

For a comprehensive list of potential flaws in research studies, please see ‘Why some autism research studies are flawed’

Updated
26 Mar 2018
Last Review
23 Sep 2015
Next Review
01 Sep 2018