Is Phonological-Only Instruction Helpful for Reading?: A Meta-Analysis

Abstract

Purpose: Phonological awareness (PA), the awareness of sounds in spoken words, is strongly linked to reading outcomes. However, there is an ongoing debate regarding the effectiveness of PA instruction without including print (i.e. PA without exposure to words or letters). Specifically, is PA-only instruction just as effective in improving reading outcomes when compared to print-based instruction (e.g. phonics)? Method: Robust variance estimation was used to examine the effectiveness of PA-only instruction across 38 independent studies and 293 effect sizes. The sample consisted of 3,880 participants in preschool through first grade. The average age of participants was 5 years 7 months. Moderator analysis were conducted to examine differences in effect across outcomes, comparison conditions and participant characteristics. Results: PA-only instruction had a moderate overall effect (g = 0.57, 95% CI [0.40, 0.74], p