A Revised Speech Intelligibility Rating (RSIR) test: listeners with normal hearing.

Two experiments were conducted to examine the intelligibility of 72 passages of connected discourse prepared by Cox and McDaniel in their development of the Speech Intelligibility Rating (SIR) test. Intelligibility was assessed with a method-of-adjustment (MOA) procedure in which listeners adjusted the level of a multi-talker babble until they could just understand 50% of a passage; the measure of intelligibility was the signal-to-babble ratio, dB S/B. The objective was to develop a Revised Speech Intelligibility Rating (RSIR) test that would comprise a large number of equivalent passages that produce reliable intelligibility measures.

Relative ear advantage and element duration.

Lauter [J. Acoust. Soc.

Interpretation of outcome on dichotic listening tests following stroke.

The historical basis for interpretation of the dichotic listening performance of aphasic patients is presented. Most studies agree with respect to outcome; aphasic patients as a group tend to have ear advantages (EAs) that are shifted to the left relative to non-brain-damaged listeners. Studies disagree as to whether this difference reflects a shift toward right hemisphere dominance for language processing or a "contralateral ear lesion effect.

Comparison of target monitoring and two-ear monitoring dichotic listening procedures.

The dichotic listening performance of 40 listeners was assessed for consonant-vowel (CV) nonsense syllables with two procedures. One was a conventional two-ear monitoring task in which listeners attended to both ears and provided two responses for each pair of syllables. The ear advantage was described by % RE-% LE.

Effects of decision variables on stimulus dominance in dichotic listening.

Stimulus dominance occurs when one member of a dichotic pair is identified more accurately than the other member. The contribution that attentional factors, listener biases, and other nonsensory variables make to stimulus dominance was assessed by comparison of scores obtained in a conventional two-ear monitoring task with scores obtained in a yes/no target-monitoring task. The target-monitoring paradigm is an application of signal detection theory to dichotic listening that allows calculation of d', a measure of perceptual sensitivity.