Purpose: This study investigates the heritability of language, speech, and nonverbal cognitive development of twins at 4 and 6 years of age. Possible confounding effects of twinning and zygosity, evident at 2 years, were investigated among other possible predictors of outcomes. Method: The population-based twin sample included 627 twin pairs and 1…

This study investigated the relationship between children's attendance at different types of early childhood education and care programmes and their mathematical and verbal skills. Analyses of data from 1314 children participating in an Australian longitudinal study, the E4Kids project, revealed no relationship between children's verbal ability…

A longitudinal study reported positive speech and language outcomes for 29 children with hearing loss in an auditory-verbal therapy program (AVT group) (aged 2 to 6 years at start; mean PTA 79.39 dB HL) compared with a matched control group with typical hearing (TH group) at 9, 21, and 38 months after the start of the study. The current study…

This study examined the speech perception, speech, and language developmental progress of 25 children with hearing loss (mean Pure-Tone Average [PTA] 79.37 dB HL) in an auditory verbal therapy program. Children were tested initially and then 21 months later on a battery of assessments. The speech and language results over time were compared with…

This is the first report arising from a large-scale research project on the development of skills in English in the primary schools of Sydney, Australia. Specifically, it reports on a study of the extent of the relationship among the four communication skills (reading, writing, listening, and speaking) in a sample of 314 children and on a…