Question: 4 Where an equivalent control group is essential we might pre-test a group of children, apply a programme designed to increase their sensitivity to the

4 Where an equivalent control group is essential we might pre-test a group of children, apply a programme designed to increase their sensitivity to the needs of people with disabilities, then test again to measure improvement. To check that the children would not have changed anyway, irrespective of the ‘treatment’, we need to compare their changes with a separate control and/or placebo group.

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