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One of the major motivations for creating disability measures was in response to the paucity of freely available tools for the assessment and diangosis of autism. Here, we present a curated list of free tools that are relevant to autism:

Toddlers (less than 3 years of age)

 Autism Mental Status Exam (AMSE)

 Autism Quotient (AQ)

 Baby Pediatric Symptom Checklist (BPSC)

 Developmental Milestones Question Set of the Survey of Wellbeing of Young Children (SWYC Milestones)  

 Early Screening for Autistic Traits (ESAT)

 Modified Checklist for Autism in Toddlers (M-CHAT)

 Preschool Pediatric Symptom Checklist (PPSC)

 Quantitative Checklist for Autism in Toddlers (Q-CHAT)

 Repetitive Behavior Questionnaire (RBQ-2)

 Parental Observation of Social Interaction (part of SWYC)

Children (3 to 18 years old)

Autism Classification System of Functioning: Social Communication (ACSF:SC)

Autism Mental Status Exam (AMSE)

Autism Treatment Evaluation Checklist (ATEC)

Autism Quotient (AQ)

Cambridge Mindreading Face-Voice Battery for Children (CAM-C)

Checklist for Autism in Toddlers (CHAT)

Childhood Autism Spectrum (formerly “Asperger Syndrome”) Test (CAST)

Children’s Empathy Quotient (EQ-C)

Developmental Milestones Question Set of the Survey of Wellbeing of Young Children (SWYC Milestones)

Empathy Quotient for Adolescents (EQ-Adolescent)

Motor Imitation Scale (MIS)

Preschool Pediatric Symptom Checklist (PPSC)

Sense and Self-Regulation Checklist (SSC) 

Systemizing Quotient for Adolescents (SQ-Adolescent Version)

Systemizing Quotient for Children (SQ-C)

Survey of Wellbeing in Young Children (SWYC)

Waisman Activities of Daily Living (W-ADL) Scale

Adult

Adult Asperger Assessment (AAA)

Adult Repetitive Behavior Questionnaire-2 (RBQ-2A)

Autism Mental Status Exam (AMSE)  

Autism Parenting Stress Index (APSI)

Autism Treatment Evaluation Checklist (ATEC)

Autism Quotient (AQ)

Cambridge Mindreading (CAM) Face-Voice Battery (Adult)

Empathy Quotient for Adults (EQ)

Parent Interview for Autism–Clinical Version (PIA–CV)

Ritvo Autism Asperger Rating Scale-Revised (RAADS-R)

Systemizing Quotient (SQ)  

Waisman Activities of Daily Living (W-ADL) Scale