Children who received four points or less on the ICS also had significantly lower scores on Málhljóðapróf ÞM compared to children who got higher than four on the ICS (p <0.004).
Einnig höfðu börn sem fengu fjögur stig eða minna á ICS kvarðanum marktækt lægra meðaltal á Málhljóðaprófi ÞM en börn sem fengu hærra en fjóra (p <0,004).