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James Noble - Are 'control group' studies the only game in town?

What makes good evidence? The quick answer to this question is to point you towards the various ‘standards of evidence’ that evaluators have developed to rate research in terms of quality and validity. Within these standards of evidence, a common theme is the importance of control or comparison groups where service users are compared to non-users (ideally selected randomly, like a drug trial).
Written by James Noble at 00:00