title: Whether the Autism Spectrum Quotient consists of two different subgroups? Cluster analysis of the Autism Spectrum Quotient in general population.
abstract: The purpose of this study was to investigate whether the individuals in the general population with high scores on the Autism Spectrum Quotient constituted a single homogeneous group or not. A cohort of university students (n = 4901) was investigated by cluster analysis based on the original five subscales of the Autism Spectrum Quotient. Based on the results of the analysis, the students could be divided into six clusters: the first with low scores on all the five subscales, the second with high scores on only the 'attention to detail' subscale, the third and fourth with intermediate scores on all the subscales, the fifth with high scores on four of the five subscales but low scores on the 'attention to detail' subscale and the sixth with high scores on all the five subscales. The students with high total Autism Spectrum Quotient scores (n = 166) were divided into two groups: one with high scores on four subscales but low scores on the 'attention to detail' subscale and the other with high scores on all the five subscales. The results of this study suggested that individuals from the general population with high Autism Spectrum Quotient scores may consist of two qualitatively different groups.
authors.affiliation: 1 Kochi University, Japan.|2 Kochi Gillberg Neuropsychiatry Centre, Japan.
authors.forename: Noriko
authors.initials: N
authors.lastname: Kitazoe
authors.affiliation: 1 Kochi University, Japan.|3 Kochi Research Project for Developmental Disorders, Japan.
authors.forename: Naofumi
authors.initials: N
authors.lastname: Fujita
authors.affiliation: 2 Kochi Gillberg Neuropsychiatry Centre, Japan.|4 Kochi Health Sciences Center, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Izumoto
authors.affiliation: 1 Kochi University, Japan.|3 Kochi Research Project for Developmental Disorders, Japan.
authors.forename: Shin-Ichi
authors.initials: SI
authors.lastname: Terada
authors.affiliation: 2 Kochi Gillberg Neuropsychiatry Centre, Japan.|5 Kochi Prefectural Medical and Welfare Centre, Japan.
authors.forename: Yuhei
authors.initials: Y
authors.lastname: Hatakenaka
mesh_terms: D000293:Adolescent; D000328:Adult; D000067877:Autism Spectrum Disorder / Q000145:classification / Q000453:epidemiology* / Q000523:psychology; D016000:Cluster Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011581:Psychological Tests; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires; D014495:Universities; D055815:Young Adult
keywords: Autism Spectrum Quotient; attention to detail; autism spectrum disorder; k-means