The Friendship Questionnaire: An Investigation of Adults with Asperger Syndrome or High-Functioning Autism, and Normal Sex Differences

@article{BaronCohen2003TheFQ,
  title={The Friendship Questionnaire: An Investigation of Adults with Asperger Syndrome or High-Functioning Autism, and Normal Sex Differences},
  author={Simon Baron-Cohen and Sally J. Wheelwright},
  journal={Journal of Autism and Developmental Disorders},
  year={2003},
  volume={33},
  pages={509-517}
}
Friendship is an important part of normal social functioning, yet there are precious few instruments for measuring individual differences in this domain. In this article, we report a new selfreport questionnaire, the Friendship Questionnaire (FQ), for use with adults of normal intelligence. A high score on the FQ is achieved by the respondent reporting that they enjoy close, empathic, supportive, caring friendships that are important to them; that they like and are interested in people; and… 
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The EQ reveals both a sex difference in empathy in the general population and an empathy deficit in Asperger Syndrome or high-functioning autism adults, who are reported clinically to have difficulties in empathy.
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