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Social Communication Questionnaire (SCQ)

Social Communication Questionnaire (SCQ)

Quick Overview

The SCQ provides a quick and easy routine screening for autism spectrum disorders.

Product Description

Previously known as the 'Autism Screening Questionnaire', this brief instrument can be used to evaluate anyone over 4 years as long as his or her mental age exceeds 2 years.

It is available in two forms - Lifetime and Current - each composed of 40 yes or no questions. Both forms can be given directly to the parent or primary caregiver, who can answer the questions without supervision.

The 'Lifetime' form focuses on the child's entire developmental history, providing a total score that is interpreted in relation to specific cut-off points. The score identifies individuals who may have autism and should be referred for a more complete evaluation, using the Autism Diagnotic Interview-Revised, (ADI-R) or the Autism Diagnostic Observation Schedule, (ADOS).

The 'Current' form looks at the child's behaviour over the most recent 3 month period. It produces results that can be helpful in treatment planning, educational intervention and measurement of change over time.

In addition to its screening and educational applications, the SCQ can also be used to compare symptom levels across various groups - children with developmental language disorders for example, or youngsters with medical conditions typically associated with autism spectrum disorders. Because SCQ is brief, easily administered and relatively inexpensive, it allows clinicians and educators to routinely screen children for autism spectrum disorders. This in turn permits early intervention.

The SCQ provides a dimensional measure of ASD symptomatology with a cut-off score that can be used to indicate the likelihood that an individual has an ASD. The three main uses of the instrument are:

  • With individual children as a screening device; the SCQ can be used to select those who need a more thorough assessment for a possible ASD.
  • SCQ scores can be used to compare overall levels of ASD symptomatology across different groups.
  • To monitor changes in the level of ASD symptomatology over time.

The SCQ is suitable for screening and monitoring. It is not suitable for diagnosis because it does not give information relating to onset, course and pervasiveness of symtoms across contexts. Moreover it is based on caregiver reports and, for diagnostic purposes, these need to be checked against direct clinical observation.

Sample Reports

To view a sample form (PDF) showing the first three items of the SCQ Current Form, please click here.

To view a sample form (PDF) showing the first three items of the SCQ Lifetime Form, please click here.

Related Products
Authors: Michael Rutter, MD, FRS, Anthony Bailey MD & Catherine Lord, PhD
Duration: Less than 10 minutes.
Languages: English
Suitable For: Over 4 years with a minimum mental age of 2 years.
Used For: Providing a quick and easy routine screening for autism spectrum disorders.
Qualification Levels: Level 2
Full specification

Psychometric properties

  • Internal consistency (alpha) co-efficients for the four factors are .91 (Factor 1), .71 (Factor 2), .79 (Factor3) and .67 (Factor 4).
  • Internal consistency (alpha) coefficients range from .84 to .93 across age groups with older age groups showing higher alphas.
  • Internal consistencies are also calculated across diagnostic groups. Only children with language were analysed as the number of children without language was too small to support separate analysis. Internal consistencies were .81 (Autism), .86 (ASD) and .92 (Nonspectrum).
  • The factor structure of the SCQ was explored using principal component factoring with varimax rotation. Four factors explained 42.4% of the total variance. These are Social Interaction (24.3%), Communication (8.7%), Abnormal Language (5%) and Stereotyped Behaviour(4.5%).
  • Individual item-total correlations are mainly substantial; in the rage .26 to .73 (23 of the 30 exceed 0.5).
  • The extent to which combinations of SCQ items differentiated ASDs (including autism) from other diagnoses was explored. Of the 39 scored items, 33 showed statistically significant differentiation. Of those that didn't, four concerned abnormal language features.  These items had relatively high frequency in non-ASD children but substantial correlations with the SCQ total score. Two other items differentiated only at the 7% level (self injury and unusual attachment to objects); both showed only modest correlations with the Total Score.
  • Correlations between ADI and SCQ were calculated for Total Score and the ADI domain totals. All correlations are statistically significant and substantially unaffected by age, gender, language level and performance IQ.
  • Discriminant power was assessed through a series of ROC analyses and t-tests were carried out. The discriminant ability of SCQ is high in differentiating ASD (Including autism) from non-ASD conditions. THE SCQ also discriminates between autism and and other ASDs but there is substantial overlap and the differentiation is much less clear cut.

Availability: In stock

Available Products
Code Product Name Price Pack Qty
5580101 SCQ Kit
£112.00
1 - +
5580102 SCQ Manual
£54.90
1 - +
5580105 SCQ Current AutoScore™ Form
£35.10
20 - +
5580106 SCQ Lifetime AutoScore™ Form
£35.10
20 - +
5580110 ADOS/ADI-R/SCQ Unlimited Use Scoring CD
£424.00
1 - +
5580111 ADOS/ADI-R/SCQ Current PC Answer Sheet
£18.00
1 - +
5580112 ADOS/ADI-R/SCQ Lifetime PC Answer Sheet
£18.00
1 - +
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