Amplification affects spatially separated thresholds but not colocated speech thresholds.

Evidence

Thresholds for the colocated conditions (Fig. 2 left panel) were basically independent of amplification level … It appears that under these conditions, a large proportion of the SRM deficit in the HI (and simulated HI) group could be attributed to reduced audibility. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1740 (#corroborates, via linked claim)

Categorization

• corroborated: 2 independent passages support this claim
• XREF: connects to: Amplification restores separated-condition speech thresholds but leaves a residual NH advantage. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1740; Colocated speech thresholds are unaffected by audibility-driven amplification, unlike separated ones. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1740; Reduced target audibility, not spatial processing loss, explains much of the hearing-loss speech deficit — Dijk, Pim van, Physiology, Psychoacoustics and…, 1719

Broader Connections

• Colocated speech thresholds are unaffected by audibility-driven amplification, unlike separated ones. #corroborates (0.97) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1740