Validation of the Finnish Autism Spectrum Screening Questionnaire (ASSQ) for clinical settings and total population screening.

Mattila et al. (2012) tested the Finnish Autism Spectrum Screening Questionnaire (ASSQ).

They asked parents and teachers to fill out the 27-item checklist for 7- to 12-year-olds.

The team set two cut-off scores: one for clinics and one for whole-population screening.

A summed parent-plus-teacher score of 30 worked best in clinics.

For mass screening, a lower cut-off of 28 caught more cases without too many false alarms.

These numbers give Finnish teams clear pass-fail lines for both settings.

Posserud et al. (2009) used the same parent-plus-teacher method but set the cut-off at 17.

The higher Finnish numbers do not clash; they simply refine the tool for a new language group.

Guo et al. (2011) also re-validated the ASSQ, yet their Mandarin sample needed only 12 points.

That big gap shows cut-offs must be re-set for each culture and language.

Kopp et al. (2011) went further and added girl-specific items, because the original ASSQ misses many females.

If you screen Finnish-speaking children, use 28 for schools and 30 for clinics.

Remember that cut-offs from other countries do not transfer; always check the local validation.

For girls, keep an eye out even if the score sits just below the line.