Comparing group performance on motion coherence and equivalent noise tasks.

Schizophrenia and control group performances were compared using a series of one-way analyses of covariance with IQ scores included as a covariate. These analyses were undertaken on filtered data. See text however for details of analyses undertaken on non-filtered (raw) data with and without IQ included as a covariate. F = F-statistic; d.f. = degrees of freedom; p = significance level; Partial-η2 = effect size; Th = motion coherence threshold; σint = internal noise; nsamp = sampling.Comparing group performance on motion coherence and equivalent noise tasks.