No abstract

Perception of American Sign Language (ASL) handshape and place of articulation parameters was investigated in three groups of signers: deaf native signers, deaf non-native signers who acquired ASL between the ages of 10 and 18, hearing non-native signers who acquired ASL as a second language between the ages of 10 and 26. Participants were asked to identify and discriminate dynamic synthetic signs on forced choice identification and similarity judgement tasks. No differences were found in identification performance, but there were effects of language experience on discrimination of the handshape stimuli. Participants were significantly less likely to discriminate handshape stimuli drawn from the region of the category prototype than stimuli that were peripheral to the category or that straddled a category boundary. This pattern was significant for both groups of deaf signers, but was more pronounced for the native signers. The hearing L2 signers exhibited a similar pattern of discrimination, but results did not reach significance. An effect of category structure on the discrimination of place of articulation stimuli was also found, but it did not interact with language background. We conclude that early experience with a signed language magnifies the influence of category prototypes on the perceptual processing of handshape primes, leading to differences in the distribution of attentional resources between native and non-native signers during language comprehension.

When signers communicate with one another, they use some signs, such as finish, more frequently than others, such as eagle. The frequency of occurrence affects both the way that languages are processed and the way they change over time. It is important to be aware of the frequency characteristics of a language when pursuing either psycholinguistic or linguistic analyses. This article reports the findings of a pilot study of sign frequency in American Sign Language. A corpus of over four thousand signs was analyzed, and some of the frequency characteristics that were uncovered are reported here. Appendix 1 lists the most frequent signs in the database.

This study investigated the claim that children are not able to judge artistic style when it conflicts with subject matter cues in paintings, using stimulus and methodological controls not employed previously. 6 and 9 year old children and adults were asked to judge which member of a pair of paintings looked like it was painted by the same painter as the target in a matching to sample task. Style choices were always possible and subject matter matches were either not possible because that dimension was controlled in the stimulus set (control), or possible but in conflict with style choices (experimental). The levels of discriminability of style and subject matter differences were varied. For control conditions, we found that performance was poor for all ages when style differences were low in discriminability and subject matter varied across the three stimuli; otherwise it was high. For experimental conditions, we found that irrelevant variation of subject matter was more detrimental if differences on that dimension were highly discriminable. Even the youngest children could make style matches and could do so even when a subject matter match was also possible, suggesting that they are sensitive to artistic style and can focus on that dimension in the face of irrelevant variation on other dimensions. The results are discussed as they relate to earlier claims that children are not able to judge artistic style and to the implications for training that follow from those claims.