Table 6.

Phoneme Composition of the Easy/Hard Word Lists

tally	Phoneme Class
3	vowels, liquids
14	vowels, liquids, nasals
5	vowels, liquids, voiced fricatives
23	vowels, liquids, nasals, voiceless fricatives
26	vowels, liquids, nasals, voiced obstruents
25	vowels, liquids, nasals, voiceless obstruents
148	unrestricted

A back-of-the-envelope method of predicting intelligibility gain from shared segmental properties. The right column shows the feature restriction exhibited of the sentences that were used in each exposure condition. The left column shows the tally of words (out of 148) in the Easy/Hard word lists exhibiting the features of the exposure sentences. A prediction by the incidence of features identifies three conditions with approximately equal benefit: vowels, liquids, nasals, voiceless fricatives; vowels, liquids, nasals, voiced obstruents; and, vowels, liquids, nasals, voiceless obstruents. However, facilitation was only observed in one of these conditions: vowels, liquids, nasals, voiced obstruents. (See Discussion.)