Meta-Analysis of Studies Incorporating the Interests of Young Children with Autism Spectrum Disorders into Early Intervention Practices

Table 1

Average effect sizes and 95% confidence intervals for interventions targeting different core features of autism spectrum disorders.

Type of comparison/core features	Number		Average effect size	95% Confidence interval	Z-test
	Studies	Effect sizes
Baseline versus intervention
Communication	5	21	4.04	2.76–5.33	6.55***
Interpersonal	4	16	3.66	2.40–4.93	6.16***
Repetitive behavior	4	40	1.56	0.54–2.57	3.10*
Low versus high interest
Communication	3	21	1.52	0.55–2.50	3.26**
Interpersonal	3	10	3.78	1.75–5.80	4.23***
Repetitive behavior	5	32	0.85	0.48–1.21	4.75***

^∗𝑃=.0019, ^∗∗𝑃=.0011, ^∗∗∗𝑃=.0000.