Jei-Tun Wu

Internal consistency and factor structure of the Chinese health questionnaire

The internal consistency and factor structure of the Chinese Health Questionnaire (CHQ) were investigated in 2 samples in Taiwan, one from 3 communities (n= 1023) and the other from consecutive attenders for health screening in a general hospital (n= 386). Cronbachs alpha coefficients were calculated to be 0.84 and 0.83 for the 12‐item and 0.90 and 0.92 for the 30‐item CHQ version. Four factors similarly extracted for the CHQ‐30 in both samples include somatic symptoms, anxiety and worrying, social dysfunction, and depression and poor family relationship. The implications of these findings were discussed from a cross‐cultural perspective.

Comprehension of Referring Expressions in Chinese

Studies of English have shown that reduced referential expressions (e.g. pronouns) contribute more to discourse coherence than do unreduced expressions (e.g. proper names). To test the generality of these findings, a series of reading-time studies was conducted to examine the processing of coreference in Chinese discourse. The results obtained for Chinese were similar to those obtained previously for English. Furthermore, comparisons of the comprehension of overt pronouns and zero pronouns (a phologically-null form not present in English) showed that the two types of reduced referring expressions contribute equally to discourse coherence for the kinds of passages studied in the experiments. A formal model of the structure and processing of reference in discourse, developed to handle co-reference phenomena in English, is shown to provide an account of these experimental results on the reading of Chinese.

Encoding operation and transcoding as the major loci of the frequency effect

The present study used a lexical naming task as well as a regular naming task and a lexical decision task for locating the frequency effects in lexical decision and naming. The naming of Chinese characters in the lexical naming task (pseudocharacters also presented as in the lexical decision task) involves decision processes, while they are absent in the regular naming task. Since naming a Chinese character necessarily involves lexical access, a decision component of the frequency effect in lexical decision can be isolated. This procedure will not work for alphabetic orthographies, because sublexical processes underestimate the frequency effect in the regular naming task. As a consequence, not only can a prelexical component of the frequency effect in lexical decision be estimated, but a postlexical component of the frequency effect in naming can be estimated.

Homophone density and phonological frequency in Chinese word recognition

The present research factorially examined the effects of homophone density, visual frequency, and phonological frequency (defined here as the cumulative frequency of homophone mates) in Chinese visual word recognition. Stimuli were compound characters matched in semantic and phonetic radical neighbourhood density and in average visual frequency of orthographic neighbours. In contrast to a previous study with Chinese by Ziegler, Tan, Perry, and Montant (2000), no facilitative effect of phonological frequency was observed. Unlike previous findings with English readers of inhibitory effects of homophones, a facilitative effect of homophone density – restricted to low visual frequency words – was obtained for Chinese in both lexical decision (Exp. 1) and naming (Exp. 2), similar to Ziegler et al. (2000). Our results suggest that, when there is less possibility of sublexical competition between similar spellings, homophone density effects are facilitatory. This outcome supports theoretical positions regarding the mental representation of homophones that assume a single representation for homophones at the phonological word form level.

The Processing of Coreference for Reduced Expressions in Discourse Integration

Three reading-time experiments in Chinese are reported that test contrasting views of how pronominal coreference is achieved. On the one hand, studies of reading time and eye tracking suggest that reduced expressions, such as the pronoun he, serve as critical links to integrate separate utterances into a coherent model of discourse. On the other hand, probe-word recognition studies indicate that full anaphoric expressions, such as a repeated name, are more readily interpreted than reduced expressions due to their rich lexical information, which provides effective cues to match the representation of the appropriate referent in memory. The results indicate that the ease of integrating the critical referent into a model of discourse is a function of the congruence of lexical, semantic, and discourse features conveyed by a syntactically prominent reduced expression within linguistic input. This pattern supports the view that a reduced expression is interpreted on-line and indeed plays a critical role in promoting discourse coherence by facilitating the semantic integration of separate utterances.

The long-term modality effect : in search of differences in processing logographs and alphabetic words

The visual superiority effect (a reverse long-term modality effect) has been consistently found with Chinese logographs. For its explanation in terms of script differences, it has been believed that lexical access is more direct or quicker for Chinese logographs than for alphabetic words. It has also been believed that Chinese logographs are more unique in shape or more discriminable than alphabetic words. Finally, Chinese logographs have been considered to facilitate recall through their graphic features that classify Chinese words into categories. The results of Experiments 1-5 show that these three assumptions can be ruled out. The results of Experiments 6-10, on the other hand, support the long-term priming interpretation of the visual superiority effect, which explains (a) why the visual superiority effect can be consistently obtained for recall of Chinese words by Chinese subjects, (b) why the effect cannot be consistently obtained for recall of English words by Western subjects, (c) why the effect can be also obtained for recall of English words by Chinese subjects, (d) why the effect can be easily obtained for recall of a set of words, but not for recall of a different set of words by Chinese subjects, and (e) why the effect can be easily obtained from Chinese subjects speaking a dialect that is different from Mandarin.

Chinese Orthographic Priming in Lexical Decision and Naming

Accompanied with the reliable facilitation effect of semantic (instead of homophonic) priming on character recognition and naming found in previous research, it was also observed that priming with orthographically similar characters inhibits recognition and naming of targets. The first two experiments manipulated prime character frequency, orthographic similarity, and SOA (stimulus onset asynchrony) in lexical decision and naming tasks. In the lexical decision task, the target characters which were preceded by an unmasked, orthographically similar prime of higher frequency were responded to slower than their dissimilar pair controls with SOAs of 50 ms and 500 ms. A similar inhibition effect was also observed in the naming task. When the SOA duration was extended to 1000 ms in Experiment 2, a significant inhibition effect was observed not only under conditions with primes of higher frequency but also with primes of lower frequency. In Experiment 3, pseudo-character primes were included. It was found that pseudo-character primes obtained no effect upon target recognition while manifesting a small inhibition effect on target naming under the prime exposure duration of 500 ms. In Experiment 4, an additional prime condition of free radicals in isolation was included. It was found in Experiment 4 that with the SOA of 50 ms or 500 ms, the embedded right component radical in isolation facilitated the recognition of the target character embedding it, while not exerting any effect on character naming.

The role of orthographic neighborhood size effects in Chinese word recognition.

Previous studies about the orthographic neighborhood size (NS) in Chinese have overlooked the morphological processing, and the co-variation between the character frequency and the the NS. The present study manipulated the word frequency and the NS simultaneously, with the leading character frequency controlled, to explore their influences on word lexical decision (Experiment 1) and naming (Experiment 2). The results showed a robust effect that words with a larger NS produced shorter reaction time than those with a smaller NS, irrespective of the word frequency and the tasks. This facilitative effect may occur due to a semantic network formed by neighbor words, resulting in the semantic activation to accelerate the word recognition. Moreover, the comparison of the effect sizes of word frequency between the two tasks showed that lexical decision responses demonstrated a larger word frequency effect, indicating that the sub-word processing was involved in the multi-character word recognition.

Neighborhood Frequency Effect in Chinese Word Recognition: Evidence from Naming and Lexical Decision

Neighborhood frequency is a crucial variable to know the nature of word recognition. Different from alphabetic scripts, neighborhood frequency in Chinese is usually confounded by component character frequency and neighborhood size. Three experiments were designed to explore the role of the neighborhood frequency effect in Chinese and the stimuli were all two-character words. This effect was evaluated on targets with- and without-higher frequency neighbors with neighborhood size matched. Among the experiments, the patterns of the leading character frequency effect and word frequency effect in the naming and lexical decision tasks were compared. The results implied an inhibitory neighborhood frequency effect in Chinese word recognition. Accordingly, a possible cognitive mechanism of the neighborhood frequency effect was thus proposed.

Use of Memory-Load Interference in Processing Spoken Chinese Relative Clauses

The processing advantage of Subject-gapped relative clause (SRC) versus Object-gapped relative clause (ORC) has been advocated by competing processing accounts. Using a self-paced listening paradigm, this study investigates what Chinese RC online processing asymmetry looks like under concurrent memory load manipulation. Both On-line listening times and Post-online measures of Chinese SRCs and ORCs are estimated and compared. The on-line results show that ORCs and SRCs demonstrate no differential processing patterns under the interfering conditions. At the relativizer-DE marker region, under 0-digt-load, SRCs show processing advantage, while under 5-digit-load condition, SRCs display greater listening times than ORCs. Furthermore, the Post-online RTs and accuracy of post-sentence comprehension and digit recalls show that processing of SRCs had worse performance. These results lead to the conjecture that there may be no intrinsic processing asymmetry in Chinese RCs, and underscore the necessity that future studies in exploring the processing metrics of sentence complexity should consider the working memory involvement.