Given the significant discrepancy between the Verbal subtests and the Performance subtests on the WPPSI-R IS for the bilingual children, a full scale IQ could not be calculated for over half of the bilingual children (19,5% of monolingual children).
Frekar kom fram misræmi milli mállegs og verklegs hluta WPPSI-R IS hjá tvítyngdum börnum en eintyngdum, þar sem ekki var hægt að greina frá heildartölu greindar fyrir ríflega helming tvítyngdra barna en slíkt misræmi birtist eingöngu hjá 19,5% eintyngdra barna.