Use of blind evaluations was found to exert a highly significant effect, with the effect size falling to 0.15 in 20 blind studies of overall symptoms and to 0.08 in 20 blind studies of positive symptoms; the last result was non-significant.
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Use of blind evaluations was found to exert a highly significant effect, with the effect size falling to 0.15 in 20 blind studies of overall symptoms and to 0.08 in 20 blind studies of positive symptoms; the last result was non-significant.