Adolescent Systemizing Quotient (SQ) – Parent Version

Abstract

The Adolescent Systemizing Spectrum Quotient (SQ) – Parent Version is a psychometric instrument designed to quantify an adolescent’s drive to analyze, explore, and construct systems. This parent-report measure is specifically applicable for assessing children between the ages of 12 and 15 years. It is an integral tool derived from the broader Empathizing-Systemizing (E-S) theoretical framework developed by researchers at the Autism Research Centre (ARC), primarily used in research to measure cognitive style and its relationship to various neurodevelopmental profiles, particularly the Autism Spectrum.

The scale consists of 55 items rated on a four-point Likert scale, allowing parents to report on their child’s interests in patterns, rules, collections, technical details, and organizational behavior. High scores on the SQ indicate a strong propensity for systemizing, which involves identifying the rules that govern a system to predict how that system will behave.

Keywords

Systemizing Quotient, SQ, Adolescent, Parent Report, Systemizing, Empathizing-Systemizing Theory, E-S Theory, Cognitive Style, Autism Spectrum Disorder, Psychometrics

Authors

B. Auyeung, C. Allison, S. Wheelwright, S. Baron-Cohen (2001, 2006, 2008, 2012)

Purpose

The primary purpose of the Adolescent SQ (Parent Version) is to provide a standardized, observer-rated measure of systemizing tendencies in mid-adolescence. This period is crucial for the development of specialized interests and cognitive styles.

The scale is widely used in developmental and clinical psychology research to investigate whether systemizing skills are elevated or diminished in certain populations, and to explore the relationship between systemizing and other cognitive traits, such as empathizing, as posited by the Empathizing-Systemizing (E-S) Theory. It helps researchers understand individual differences in the preference for rule-based, predictable, and detailed information.

Construct

The scale measures Systemizing, defined as the drive to analyze the variables in a system, to derive the underlying rules that govern that system, and to construct new systems based on these rules. A system is anything that follows rules or patterns, such as mechanical devices, natural phenomena (e.g., weather, tides), abstract concepts (e.g., mathematics, grammar), or collections.

Systemizing involves a range of behaviors including attention to detail, a strong interest in how things work (mechanics, technology), a preference for order and predictability, and the ability to categorize information efficiently. The construct is considered independent of general intelligence, although high systemizing is often associated with technical and scientific fields of interest. The items reflect various domains of systemizing, such as technical, numerical, abstract, and collecting behaviors.

Validity

Research, particularly the study by Auyeung et al. (2012), has established the construct validity of the Adolescent SQ by demonstrating its strong association with related measures of systemizing and its ability to differentiate between groups. The scale typically shows significant positive correlations with other measures of technical interest and detail orientation.

Furthermore, the SQ scores often exhibit expected patterns when applied to clinical populations. Studies frequently report significantly higher systemizing scores in individuals diagnosed with Autism Spectrum Disorder (ASD) compared to typically developing controls, providing strong evidence for the scale’s ability to capture the specific cognitive profile highlighted by the Empathizing-Systemizing (E-S) Theory.

Reliability

The Adolescent SQ demonstrates strong internal consistency, which is crucial for a robust psychometric instrument. Internal consistency is typically measured using Cronbach’s alpha, and published studies on the adolescent version generally report coefficients above the acceptable threshold of .80, often ranging into the low .90s. This indicates that the 55 items reliably measure the same underlying construct—the drive to systemize.

While test-retest reliability data for the parent version in this specific age range may vary slightly across studies, the overall consistency suggests that the measure provides stable and dependable scores over time, assuming the child’s underlying cognitive profile remains stable during the assessment period.

Factor Analysis

Exploratory and confirmatory factor analyses performed on the Systemizing Quotient across various age groups and versions typically support a dominant, underlying single factor representing the general drive to systemize. While sub-factors relating to different domains of systemizing (e.g., technical, mechanical, abstract, or numerical systemizing) may emerge, the overall structure strongly supports the use of a single total score (the Systemizing Quotient) for research purposes.

The robust single-factor structure confirms the theoretical premise that systemizing is a generalized cognitive trait, rather than a collection of unrelated interests. This simplifies interpretation and maintains the scale’s utility within the E-S framework.

Instrument

Test Type: Parent-report questionnaire (Observer-rated scale)

Format: 55 self-report items using a 4-point Likert scale (Definitely Agree, Slightly Agree, Slightly Disagree, Definitely Disagree). Scoring is categorical, with one point awarded for responses indicating high systemizing (after reverse-scoring negative items).

Language Available: Primarily English; translations may exist depending on specific research projects.

Population Group: Parents or primary caregivers reporting on their adolescent child.

Age Group: 12-15 years

Population Details: Used in clinical and non-clinical populations, frequently employed in studies comparing neurotypical adolescents with those diagnosed with Autism Spectrum Disorder.

Test Methodology: Paper-and-pencil or online administration. Raw scores are summed to produce the final Systemizing Quotient score.

Keywords

Systemizing, SQ-A, Adolescent Development, Cognitive Profile, Baron-Cohen, Autism Research Centre, Psychometric Scale, Quantification, Rules and Patterns

Authors

Author ORCID Identifier: Not provided in source content; typically requires consulting institutional directories.

Affiliation Email addresses: [email protected] (Simon Baron-Cohen) & [email protected] (Bonnie Auyeung)

Correspondence Address: Autism Research Centre, Department of Psychiatry, University of Cambridge, UK.

Permissions & Fee and Test Year

The scale is generally available for non-commercial academic research use, often without charge, provided proper citation is given to the authors and the source. Researchers should contact the corresponding authors (S. Baron-Cohen or B. Auyeung) for formal permission before use.

Test Year: The original Systemizing Quotient concept dates back to 2001 (Baron-Cohen et al.), while the specific adolescent version referenced here was developed and validated around 2012 (Auyeung et al.).

The original DOC instrument can be accessed here: http://docs.autismresearchcentre.com/tests/SQ_Adolescent.doc

Reference’s

• Auyeung, B., Allison, C., Wheelwright, S., & Baron-Cohen, S. (2012). Brief Report: Development of the Adolescent Empathy and Systemizing Quotients. Journal of Autism and Developmental Disorders, 42(11), 2512–2519.
• Baron-Cohen, S., Richler, J., Bisarya, D., Gurunathan, N., & Wheelwright, S. (2003). The Systemizing Quotient (SQ): An investigation of adults with Asperger Syndrome or High-Functioning Autism, and normal sex differences. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 358(1430), 361–374.

Items of the Adolescent Systemizing Spectrum Quotient (SQ) – Parent Version

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

1. My child finds it very easy to use train timetables, even if this involves several connections.
2. My child likes music or book shops because they are clearly organised.
3. My child would not enjoy organising events e.g. parties.
4. When my child reads something, s/he always notices whether it is grammatically correct.
5. My child categorises people into types (in his/her own mind).
6. My child finds it difficult to read and understand maps.
7. When my child looks at a bridge s/he does not think about how precisely it was made.
8. My child finds it difficult to learn how to programme video recorders.
9. When my child likes something, s/he likes to collect a lot of different examples of that type of object, so s/he can see how they differ from each other.
10. When my child learns a language, s/he becomes intrigued by its grammatical rules.
11. My child is not interested in the details of the weather forecast each day, e.g. pressure, temperature, windspeed etc.
12. If my child had a collection (e.g. CDs, coins, stamps), it would be highly organised.
13. When my child looks at a building, s/he is not curious about the precise way it was constructed.
14. My child is not interested in understanding how wireless communication works (e.g. mobile phones).
15. My child enjoys looking through catalogues of products to see the details of each product and how it compares to others.
16. My child knows, with reasonable accuracy, how much money s/he has spent and how much s/he has got left of his/her pocket money or allowance.
17. When my child was younger, s/he did not enjoy collecting sets of things, e.g. stickers, football cards etc.
18. My child is interested in the family tree and in understanding how everyone is related to each other in the family.
19. When my child learns about historical events, s/he does not focus on exact dates.
20. My child does not enjoy games that involve a high degree of strategy (e.g. chess, risk, games workshop).
21. When my child learns about a new category s/he likes to go into detail to understand the small differences between different members of that category.
22. My child does not find it distressing if people who live with him/her upset his/her routines.
23. When my child looks at an animal, s/he likes to know the precise species it belongs to.
24. My child can remember large amounts of information about a topic that interests him/her e.g. flags of the world, airline logos.
25. At school, my child does not carefully file all his/her work.
26. My child is fascinated by how machines work.
27. When my child looks at a piece of furniture, s/he does not notice the details of how it was constructed.
28. My child does not try to work out the rules for what to say and do in different social situations.
29. My child does not tend to watch science documentaries on television or read articles about science and nature.
30. My child would be able to give directions to most parts of town.
31. When my child looks at a painting, s/he does not usually think about the technique involved in making it.
32. My child prefers social interactions that are structured around a clear activity, e.g. a hobby.
33. My child is interested in knowing the path a river takes from its source to the sea.
34. My child is a collector (e.g. of books, coins, etc.)
35. My child’s clothes are not carefully organised into different types in his/her wardrobe.
36. My child rarely reads articles or webpages about new technology.
37. My child does not particularly enjoy learning about facts and figures in history.
38. My child does not tend to remember people’s birthdays (in terms of which day and month this falls).
39. When my child is walking in the country, s/he is curious about how the various kinds of trees differ.
40. If my child was getting a camera, s/he would not look carefully into the quality of the lens.
41. If my child was getting a computer, s/he would want to know exact details about its hard drive capacity and processor speed.
42. My child does not follow any particular system when tidying his/her room.
43. If my child was getting a stereo, s/he would want to know about its precise technical features.
44. My child tends to keep things that other people might throw away, in case they might be useful for something in the future.
45. My child avoids situations which s/he can not control.
46. My child does not care to know the names of the plants s/he sees.
47. When my child hears the weather forecast, s/he is not very interested in the meteorological patterns.
48. It does not bother my child if things in the house are not in their proper place.
49. In maths, my child is intrigued by the rules and patterns governing numbers.
50. My child finds it difficult to learn his/her way around a new city.
51. My child could list his/her favourite 10 books, recalling titles and authors’ names from memory.
52. My child prefers to read fiction than non-fiction.
53. When my child has a lot of shopping to do, s/he likes to plan which shops s/he is going to visit and in what order.
54. When my child listens to a piece of music, s/he always notice the way it’s structured.
55. My child could generate a list of his/her favourite 10 songs from memory, including the title and the artist’s name who performed each song.