The correlation with the WPPSI-R IS subtests was high and positive, indicating high convergent validity since WPPSI-R IS has proven to be a reliable and valid tool for assessing children’s intelligence, including verbal intelligence.
Fylgni við undirpróf WPPSI-R IS var há og jákvæð, sem gefur til kynna hátt samleitniréttmæti, en WPPSI-R IS hefur reynst áreiðanlegt og réttmætt mælitæki til að meta greind barna, m.a. mállega greind.