Sharf D J, Benson P J
J Speech Hear Res. 1983 Dec;26(4):525-30. doi: 10.1044/jshr.2604.525.
Two 9-step continua varying in F2 and F3 frequencies between exemplary /r/ and /w/ were synthesized to represent child and adult talkers. Stimuli from the full and truncated versions of the continua were presented to naive subjects in Experiment 1 and to speech-language pathologists in Experiment 2. Shifts from full range continua category boundaries occurred in Experiment 1 for both truncated "R" and truncated "W" conditions and in a direction opposite to the truncated end of the continuum. The results of Experiment 2 indicated that the full-range category boundaries for speech-language pathologists differed from those for naive subjects but that the boundary shift for truncated "R" was as great as that for naive subjects and the boundary shift for truncated "W" was greater than that for naive subjects. These findings indicate that speech-language pathologists are more likely than naive individuals to judge ambiguous /r/ sounds as "W" and that the phonetic judgments of speech-language pathologists about /r/ sounds are no more stable than those of naive subjects.
合成了两个9步连续统，其F2和F3频率在典型的/r/和/w/之间变化，以代表儿童和成人说话者。在实验1中，将连续统完整版本和截断版本的刺激呈现给未受过训练的受试者，在实验2中呈现给言语病理学家。在实验1中，对于截断的“R”和截断的“W”条件，全范围连续统类别边界都发生了偏移，且偏移方向与连续统的截断端相反。实验2的结果表明，言语病理学家的全范围类别边界与未受过训练的受试者不同，但截断“R”的边界偏移与未受过训练的受试者一样大，截断“W”的边界偏移比未受过训练的受试者更大。这些发现表明，言语病理学家比未受过训练的个体更有可能将模棱两可的/r/音判断为“W”，并且言语病理学家对/r/音的语音判断并不比未受过训练的受试者更稳定。
