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RDLS Expressive and Receptive z scores by placement age for the foster group at 30 and 42 months. ≤ 15 = placed by 15 months, ≥ 16 = 16 to 24 months, ≥ 25 = 25 to 28 months, ≥ 29 = after 29 months; IG = institution group. Foster subgroups with a different superscript were significantly different (a = .05); Expressive and Receptive means were equivalent.
