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Autism spectrum screening tools can organize observations about social communication, sensory patterns, repetitive behaviors, and developmental milestones. They are not diagnostic, but they can help decide whether a fuller developmental or clinical assessment may be useful.
Begin with age and respondent. AQ and RAADS-14 ask adults about their own experiences. ASSQ and CAST collect observations of children. Q-CHAT and the Infant–Toddler Checklist concern early development through caregiver reports.
The content differs too: early communication includes gestures, shared attention and play, while adult forms ask about social understanding, sensory experiences and longstanding preferences. The Infant–Toddler Checklist has a broader communication focus than an autism-trait questionnaire.
Examples across home, school, work and relationships add context to responses. Developmental history matters because a present-day experience does not describe when a pattern began. Select the appropriate stage rather than choosing a form solely because it has fewer questions.
Use administration method, audience, and purpose to choose an appropriate educational or screening resource.
The Spence questionnaire asks children about fears, worries and situations that feel uncomfortable.
The 50-item AQ explores patterns in social interaction, communication, attention to detail, imagination and shifting attention.
ASSQ collects observations of a school-age child's social communication, interests and behaviour.
CAST is a parent-report questionnaire about a child's communication, play, interests and social interaction.
The Infant–Toddler Checklist organises caregiver observations about early communication.
Q-CHAT asks caregivers about a toddler's communication, attention, play and repetitive patterns.
RAADS-14 explores adult experiences involving social understanding, sensory sensitivity and social discomfort.
