Claims

Long-term effects of systematic phonics are short-lived, reducing from d = 0.29 immediately after training to d = 0.07 after about a year

Claim · All claims
Evidence · 1 study · theoretical r3 · q2
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? Suggate (2016) found systematic phonics had the smallest delayed effect size among teaching methods, dropping from d = 0.29 to d = 0.07 after a mean delay of around 1 year. → Jeffrey S. Bowers 2021

Evidence

Jeffrey S. Bowers 2021

Jeffrey S. Bowers. (2021). Yes Children Need to Learn Their GPCs but There Really Is Little or No Evidence that Systematic or Explicit Phonics Is Effective: a response to Fletcher, Savage, and Sharon (2020). Educational Psychology Review (2021) 33:1965–1979. https://doi.org/10.1007/s10648-021-09602-z

q2 · i? · theoretical · r3

The Suggate (2016) meta-analysis of long-term impacts of teaching methods, as reported in this commentary. Weighted effects of systematic phonics fell from d = 0.29 immediately after training to d = 0.07 after a mean delay of around 1 year, the smallest among the methods compared.

"Suggate ( 2016) reported a meta-analysis that focused on the long-term impact of various teaching methods, and it showed that effects of systematic phonics were short-lived (reducing from d = 0.29 immediately after training to d = 0.07 following a mean delay of around 1 year) and indeed had the smallest effect size following a delay."

Discussion

Page metadata
Field Value
type claim
id suggate-phonics-long-term-effects-short-lived
title Long-term effects of systematic phonics are short-lived, reducing from d = 0.29 immediately after training to d = 0.07 after about a year
description Long-term effects of systematic phonics are short-lived, reducing from d = 0.29 immediately after training to d = 0.07 after about a year
status review
evidence_strength weak
newest_evidence 2021
generated by process:wiki-ingest on 2026-10-22
trust unverified — no one has confirmed this page's content
sources 1 — jeffrey-s-bowers-2021

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