A Systematic Review of the Research Literature on the Use of Phonics in the Teaching of Reading and Spelling (DfES RR711)

Torgerson, C. J., Brooks, G., & Hall, J. · 2006

grade Bmeta-analysisindependentreplicated

Sample

~12-14 RCTs

Population

Beginning/early readers (mostly grade 1), English; normal and at-risk.

Design

The methodologically strongest phonics synthesis: RCT-ONLY. Fixed- and random-effects estimates; assessed publication bias (funnel asymmetry; only 1 unpublished study located). Included RCTs mostly small and older; none reported allocation concealment.

Key findings

The cleanest (RCT-only) synthesis: systematic phonics significantly improves word-reading accuracy (d=0.27 fixed / 0.38 random) but effects on comprehension (0.24-0.35) and spelling (0.09) are NOT statistically significant. No evidence synthetic beats analytic. This is the grade-B anchor for the narrow claim that explicit code instruction improves word reading.

Genetic confound

RCT design controls selection/passive rGE. Comprehension (language/g-loaded) shows no significant experimental effect.

Replication notes

Consistent with Camilli/Stuebing on magnitude; updated by Torgerson 2019 tertiary review.

DOI / URL

DfES Research Report RR711 (2006)

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BibTeX RIS

Effects

Outcome	Metric	Value	Measure	Timing	Vs	Horizon	Class
Word reading accuracy	d	0.27 (fixed) / 0.38 (random); significant	mixed	end-of-treatment	business-as-usual	end-of-treatment	domain-skill
Reading comprehension	d	0.24 (fixed) / 0.35 (random); NOT significant	mixed	end-of-treatment	business-as-usual	end-of-treatment	domain-skill
Spelling	d	~0.09; NOT significant	mixed	end-of-treatment	business-as-usual	end-of-treatment	domain-skill
Synthetic vs analytic phonics	d	no detectable difference (undercuts England synthetic-first mandate)	mixed	end-of-treatment	active-alternative	end-of-treatment	domain-skill

Cited by

Systematic/explicit phonics vs whole language and balanced literacystrong supportconf: highgc: low