Effects of sign language experience on categorical perception of dynamic ASL pseudosigns
Effects of sign language experience on categorical perception of dynamic ASL pseudosigns
复制标题
DOI：
10.3758/app.72.3.747
复制
发表时间：
2010-04-01
影响因子：
1.7
通讯作者：
Lillo-Martin, Diane
中科院分区：
文献类型：
--
作者：
Best, Catherine T.;Mathur, Gaurav;Lillo-Martin, Diane
我们调查了手语体验对聋人和听力参与者对最小手动对比刺激的绝对感知的影响，该刺激符合语音感知研究的关键标准。通过变形方法创建了毫无意义的动态刺激的连续体，该方法操纵了在美国手语（ASL）手语（ASL）手语之间有所不同的语音允许的伪造词的视频记录作品，与单个关联维度（U-V：u-v：Finger-Spectinging）形成了对比。 AXB歧视和AXB分类和目标项目上的优点评级由聋哑（本地）签名者（DE），聋哑（dl）签名（DL），听力迟到（L2）签名者（HL）和听力非签名者（HN）（HN）（HN）（HN）（HN） ）。与DE和HL参与者相比，DL参与者的分类和善良功能的分类范围不那么分类，并且具有不同的界限。歧视功能的形状和水平也因ASL经验和听力状态而有所不同，DL签名者的性能比DE，HL，尤其是HN参与者，尤其是在连续体的U端。尽管没有任何群体在类别边界上显示出歧视的峰值，因此无法支持经典的分类感知，但歧视与各组之间不同的其他方式的分类是一致的。因此，对这种最小符号对比的语音变化的感知会受到语言经验的系统影响。
We investigated effects of sign language experience on deaf and hearing participants' categorical perception of minimal manual contrast stimuli that met key criteria of speech perception research. A continuum of meaningless dynamic stimuli was created with a morphing approach, which manipulated videorecorded productions of phonotactically permissible pseudosigns differing between American Sign Language (ASL) handshapes that contrast on a single articulatory dimension (U-V: finger-spreading). AXB discrimination and AXB categorization and goodness ratings on the target items were completed by deaf early (native) signers (DE), deaf late (nonnative) signers (DL), hearing late (L2) signers (HL), and hearing nonsigners (HN). Categorization and goodness functions were less categorical and had different boundaries for DL participants than for DE and HL participants. Shape and level of discrimination functions also differed by ASL experience and hearing status, with DL signers showing better performance than DE, HL, and especially HN participants, particularly at the U end of the continuum. Although no group displayed a peak in discrimination at the category boundary, thus failing to support classic categorical perception, discrimination was consistent with categorization in other ways that differed among the groups. Thus, perception of phonetic variations underlying this minimal sign contrast is systematically affected by language experience.