Related Experiment Video
Updated: Apr 28, 2026

Use of a Video Scoring Anchor for Rapid Serial Assessment of Social Communication in Toddlers
Published on: March 14, 2018
Adaptation of the Child Development Clinical Risk Indicators instrument to retrospective parent report
Fernanda Prada Machado1, Ruth Ramalho Ruivo Palladino1, Maria Claudia Cunha1
1Pontifícia Universidad e Católica de São Paulo, São Paulo, SP, Brazil.
Insights
The adapted Child Development Clinical Risk Indicators (IRDI) questionnaire is a quick, low-cost tool for parents. It effectively identified differences in Autism Spectrum Disorder risk signs between groups in children aged 3-7.
Area of Science:
- Developmental Psychology
- Pediatric Medicine
- Clinical Psychology
Background:
- Autism Spectrum Disorders (ASD) present significant challenges in early childhood diagnosis.
- The Child Development Clinical Risk Indicators (IRDI) is a valuable tool for identifying developmental risks.
- Adapting existing instruments for parent-reported retrospective data can improve accessibility and efficiency.
Purpose of the Study:
- To adapt the Child Development Clinical Risk Indicators (IRDI) instrument for retrospective parent reporting.
- To administer the adapted IRDI questionnaire to parents of children aged 3 to 7 years.
- To evaluate the feasibility and effectiveness of the adapted IRDI in distinguishing between groups.
Main Methods:
- Modified the 31 indicators of the IRDI into retrospective, Likert-scale questions for parents.
- Administered the adapted IRDI questionnaire to 72 parents, divided into a Research Group and a Control Group.
- Assessed administration time (average 15 minutes) and cost-effectiveness.
Main Results:
- The adapted IRDI questionnaire proved easy, quick to administer, and low-cost.
- Good internal consistency was observed for the questionnaire items.
- Significant differences were found in 16 of the 31 questions when comparing parent responses between the groups.
Conclusions:
- The adapted IRDI questionnaire items align with known Autism Spectrum Disorders risk signs.
- Parental responses to the adapted IRDI demonstrated significant differences between the studied groups.
- The retrospective parent-report adaptation of the IRDI is a promising tool for early ASD risk identification.
Purpose:
To adapt the Child Development Clinical Risk Indicators (IRDI) instrument to retrospective report for parents of children from 3 to 7 years old and administer it in two groups.
Methods:
Participated on the study 72 subjects--parents of children aged from 2 years and 11 months to 7 years and 7 months--divided into two groups: Research Group and Control Group. The proposed modification to parent report transformed the 31 indicators (affirmations) into retrospective self-administered questions to parents, with responses in Likert scale. The IRDI-questionnaire was administered in the two groups.
Results:
The IRDI-questionnaire showed to be easy and quick to administer (average 15 minutes) and with low cost. The analysis of the questions obtained a good internal consistency value. The comparison between the groups by the parents' answers to the 31 questions showed difference in 16 questions.
Conclusion:
The items of the IRDI-questionnaire concern the main Autism Spectrum Disorders risk signs pointed out in literature. The parents' answers showed differences between the studied groups.

