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Effects Age on d’ (top) and reaction times (bottom) with the four degrees of spectral degradation (shapes) by normally hearing participants. Data are separated by Female (left panel) and Male Talker (right panel). Lines indicate linear regressions. (Circles/solid line - Full Spectrum, squares/dashed line – 16 Channel, diamonds/dotted line– 8 Channel, triangles/dot dashed line – 4 channel)
