Introduction
Q-CHAT asks caregivers about a toddler's communication, attention, play and repetitive patterns. Its 25 questions use graded choices to describe how behaviour occurs, rather than relying only on yes-or-no answers.
The original study focused on toddlers aged 18–24 months. At this stage, development changes quickly; examples tied to the child's current age are more informative than comparisons with an older sibling. Familiar routines can show skills that are less visible in a new environment.
The Infant–Toddler Checklist places a broader emphasis on early communication. CAST and ASSQ address older children. Comparing the developmental stage and question topics helps identify which form fits the observations you want to organise.
Instructions
Please answer the following questions about your child.
This is not a standard self-report test
Observer report; complete from the child or dependent person's typical behavior across relevant settings
Scoring and result metrics
The result page reports a local screening score for this questionnaire. Use the score range, any subscale scores, and the interpretation band together rather than treating one number as a diagnosis.
- Score range
- 0-100
- Items scored
- 25
- Result indicators
- Total score / Interpretation band when available
Score interpretation bands
- 0-100Severity score
While there is no diagnostic cut-off, higher scores indicate stronger Autism Spectrum symptoms.
Interpretation bands summarize screening thresholds from the questionnaire source material. Higher scores usually indicate more of the measured concern unless the tool notes a different scoring rule.
Tool information
- Version
- 25 questions
- Administration
- Observer-rated
- Intended audience
- Parents or primary caregivers describing social communication and repetitive behavior in toddlers, particularly around 18-24 months
Sources
Related tests
Explore related screening tools in the same topic area.
Autism Spectrum Quotient (AQ)
The 50-item AQ explores patterns in social interaction, communication, attention to detail, imagination and shifting attention.
Autism Spectrum Screening Questionnaire (ASSQ)
ASSQ collects observations of a school-age child's social communication, interests and behaviour.
Childhood Autism Spectrum Test (CAST)
CAST is a parent-report questionnaire about a child's communication, play, interests and social interaction.