Checklist for Autism Spectrum Disorder (CASD) Test

Caregivers and professionals seeking a structured way to organize observations about a child’s development may find the Checklist for Autism Spectrum Disorder (CASD) Test useful. As an autism spectrum disorder questionnaire, it gathers signs across communication, social interaction, behavior, sensory processing, and development. The result summarizes the level of indications reflected in the responses and helps clarify whether broader evaluation deserves attention.

What This Assessment Explores

Items cover social reciprocity, play, language, flexibility, sensory responses, emotions, attention, and danger awareness. It suits caregivers or clinicians seeking an organized profile of a child rather than a conclusion from one behavior.

Question themes contributing to the single total score are:

• Social communication describes responses to people, shared attention, language, cues, and relationships.
• Restricted and repetitive patterns show whether interests, movements, play, or routines become fixed or hard to interrupt.
• Sensory and bodily responses capture reactions to sound, touch, movement, pain, food, sleep, and visual exploration.
• Developmental and behavioral features summarize language history, uneven abilities, emotions, attention, fears, frustration, and safety awareness.

Used as an autism traits checklist, this questionnaire organizes patterns across settings. The CASD Total Score is 0-100: Low indications 0-33, Moderate indications 34-66, and High indications 67-100. It estimates autistic-trait risk and may signal need for evaluation.

Methodology and Evidence Base

Questions use concrete descriptions of behaviors and situations rather than abstract ratings. Response choices cover limited reciprocal interaction, sensory aversion, repetitive play, language differences, meltdowns, and danger awareness; some items refer to current or past characteristics. Selected responses form the displayed total, but the online form does not specify how many points each answer adds.

The CASD manual presents the instrument as a structured developmental screening tool. Mayes and Calhoun connect relevant symptoms with DSM descriptions; later studies examine overlap with ADHD and identify the most discriminating autism items. This CASD screening questionnaire is conceptually consistent with that work, not an adaptation of it.

Interpretation depends on the reporter’s knowledge and the child’s behavior across settings. Recall, current stress, response bias, and differences between home and school can affect answers. The result is not a standalone diagnosis; elevated indications require professional interpretation, while manual norms and professional scoring conditions are not documented for the online form.