Mixing young and elderly listeners sharpens correlation analyses by widening threshold ranges.

Evidence

It has been reported that sensitivities to the temporal structure and intensity of stimuli decline with age (e.g., Hopkins and Moore 2011 ). A population including young and elderly listeners would therefore exhibit a large variability of thresholds in the monaural tasks, which would lead to improved sensitivity of the correlation analyses and provide further insights as to the roles of monaural processing in ITD or ILD discrimination. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1027

Categorization

• XREF: The age-expansion strategy for boosting statistical power parallels the ‘add variance deliberately’ design logic familiar from other psychophysics and experimental-design work.