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Ella Patrona; John Ferron; Arnold Olszewski; Elizabeth Kelley; Howard Goldstein – Grantee Submission, 2022
Purpose: Systematic reviews of literature are routinely conducted to identify practices that are effective in addressing educational and clinical problems. One complication, however, is how best to combine data from both group experimental design (GED) studies and single-case experimental design (SCED) studies. Percent of Goal Obtained (PoGO) has…
Descriptors: Preschool Children, Vocabulary Development, Intervention, Error of Measurement