Reliability and validity of the Childhood Autism Rating Scale--Tokyo version (CARS-TV).

Landry et al. (1989) tested the Japanese version of the Childhood Autism Rating Scale (CARS-TV).

They checked if the translated scale still separated autism from other delays.

The team looked at internal consistency, inter-rater reliability, and validity.

CARS-TV held up well after translation.

It showed good internal consistency and moderate agreement between raters.

The scale correctly flagged kids with autism versus other developmental disabilities.

Haring et al. (1988) had already shown the original CARS worked for US adolescents. Landry et al. (1989) extend that success to Japanese children, proving the tool travels across cultures.

Dawkins et al. (2016) later superseded this work with CARS2, updating the scale to fit DSM-5 criteria. If you use the newer edition, you can still trust its diagnostic power.

Matson et al. (1994) dug deeper, showing that only the Social Impairment factor is needed for quick screening. Their factor work refines how you interpret any CARS version, including the Tokyo one.

If you serve Japanese-speaking families, you can confidently use CARS-TV during intake. The scale keeps its psychometric strength after translation, saving you from costly re-validation. Pair it with the Social Impairment cut-off from Matson et al. (1994) for faster decisions, and switch to CARS2 when your clinic updates to DSM-5.