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Related Concept Videos

Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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Self-report inventories are objective personality assessments that use multiple-choice items or numbered scales, typically ranging from 1 (strongly disagree) to 5 (strongly agree). They are often called Likert scales after Rensis Likert. These inventories are widely used due to their ease of administration and cost-effectiveness. One of the most prominent examples is the Minnesota Multiphasic Personality Inventory (MMPI), initially developed in the 1940s to assess abnormal personality traits.
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Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
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Modifying the social responsiveness scale for adaptive administration.

Aaron J Kaat1, Lisa A Croen2, John Constantino3

  • 1Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, 625 N. Michigan Avenue, Chicago, IL, 60611, USA. aaron.kaat@northwestern.edu.

Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation
|March 21, 2023
PubMed
Summary
This summary is machine-generated.

The Social Responsiveness Scale (SRS) can be reliably shortened using item response theory (IRT) and computer adaptive testing (CAT). This allows for efficient assessment of autism-related traits in large studies.

Keywords:
Autism spectrum disorderDifferential item functioningItem response theorySocial responsiveness scale

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Area of Science:

  • Psychometrics
  • Developmental Psychology
  • Clinical Psychology

Background:

  • The Social Responsiveness Scale (SRS) is widely used to measure autism-related traits but has a high respondent burden.
  • Existing evaluations primarily focus on the school-age form, with less evidence for the preschool form.
  • There is a need for validity evidence of shortened SRS forms in general populations for health outcomes research.

Purpose of the Study:

  • To psychometrically evaluate and shorten the Social Responsiveness Scale (SRS) using data from predominantly neurotypical samples.
  • To establish the validity and feasibility of a shortened SRS for broader health outcomes research.
  • To adapt the SRS for computer adaptive testing (CAT) administration.

Main Methods:

  • Psychometric evaluation of the SRS in 7030 individuals from multiple neurotypical samples.
  • Item factor analysis, differential item functioning (DIF), and multiple-group item response theory (IRT) were employed.
  • Computer adaptive testing (CAT) simulations were used to assess the feasibility of shortened forms.

Main Results:

  • The SRS demonstrated broad unidimensionality with minimal residual dependencies.
  • Males, on average, exhibited more autistic characteristics than females; preschoolers showed fewer than school-age children.
  • A 45-item IRT-calibrated scale was developed, with CAT simulations indicating a median of 14 items suffice for reliable scoring.

Conclusions:

  • Item response theory (IRT) enables reliable SRS scores with fewer items, reducing respondent burden.
  • The development of a shortened, IRT-based SRS is feasible for computer adaptive testing (CAT).
  • This supports the use of the SRS in CAT mode for both neurotypical and autism spectrum disorder (ASD) samples.