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What Works for Children with Literacy Difficulties? - Digital ...

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22 Integrated Learning Systems, National Council <strong>for</strong> Educational Technology<br />

study<br />

(1) Mainstream, B. Phase III<br />

Main reference: BECTa (1998)<br />

Date: 1996-97<br />

Age-range: Y5<br />

Type of children: Mixed-ability<br />

N of experimental group: 193 in 11 schools<br />

N of control group: 284 in 19 schools<br />

Equivalence of groups: not matched; pre-test differences handled statistically<br />

N of alternative intervention group: (no alternative intervention group)<br />

Length of intervention in weeks: 52<br />

Reading test: not stated<br />

Pre- and post-test average standardised scores and s.d’s: not stated<br />

Gain: not stated<br />

Ratio gain: n/a<br />

Effect size: -0.02 (BECTa, 1998, p.9)<br />

Statistical significance: statistically significant in favour of control group even though<br />

difference was very small (BECTa, 1998, p.9)<br />

22 Integrated Learning Systems, National Council <strong>for</strong> Educational Technology<br />

study<br />

(2) For pupils <strong>with</strong> low attainments in reading<br />

No data reported here – see section 3.24<br />

129

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