Perry, AdrienneKoudys, JuliePrichard, AliceHo, Hilda2020-08-072020-08-072019-03-01Behaviour Modification 43.2 (2019): 181-201.https://doi.org/10.1177/0145445517746916http://hdl.handle.net/10315/37658Although early intensive behavioral intervention (EIBI) has been clearly shown to be evidence-based, there is very little information available regarding long-term outcomes, especially from community effectiveness studies. We present data on cognitive, adaptive, and autism severity measures from four time points (pre- and post-EIBI and two follow-up points) for a sample of 21 youth, currently aged 16 years on average (range = 13-20) who received EIBI as young children and who have been out of EIBI for a mean of 10 years (range = 8.5-14). Results show heterogeneous outcomes and a general pattern of stability since the end of EIBI, suggesting gains made in EIBI are maintained.enEIBIearly intensive behavioral interventionlong-term effectivenessmaintenanceArticlehttps://journals.sagepub.com/home/bmohttps://journals.sagepub.com/https://journals.sagepub.com/doi/10.1177/0145445517746916