汉-维非熟练双语者非目标语言语音激活与语义激活差异的ERP研究

采用跨语言中介启动范式,通过两个2(词对类型)*2(启动方向)被试内的ERP实验,探讨非熟练汉-维双语者非目标语言语音激活与语义激活状态的差异。结果表明:(1)L2-L1启动方向下,语音相关词对与无关词对诱发P200峰值差异更大,潜伏期更长。(2)L1-L2启动方向下,语义相关词对与无关词对诱发N400峰值差异更大,潜伏期更长。结论:(1)在加工目标语言时非熟练汉-维双语者非目标语言词汇层与概念层都激活。(2)当非目标语言是汉语时语音激活强度大,激活速度较慢;语义激活强度较小,激活速度较快。(3)当非目标语言是维吾尔语时语音激活强度小,激活速度较快;语义激活强度较大,激活速度较慢。     

词汇熟悉度对非熟练中英双语者语言理解转换中非目标语言激活的影响

采用改造后的长时重复启动范式,探讨母语为汉语的非熟练中英双语者语言理解转换中非目标语言的激活层面,以及词汇熟悉度的影响。实验1考察学习阶段不同熟悉度的非目标词在测验阶段呈现时能否出现长时重复启动效应,从而检测双语者语言理解转换中非目标语言是否自动激活,实验2探究学习阶段不同熟悉度的非目标词在测验阶段以翻译对等词呈现时能否出现长时重复启动效应,从而检测双语者语言理解转换中非目标语言的语义层面能否激活。结果发现:非熟练中英双语者语言理解转换中非目标语言不管为中文还是英文,都能自动激活,但激活层面会受到词汇熟悉度的影响;当非目标语言为二语时,熟悉度高的二语词能激活到语义层面,熟悉度低的二语词只能激活到词汇层面;当非目标语言为一语时,不管词汇熟悉度高还是低,都能够激活到语义层面。     

双语词汇理解切换中非目标语言加工

实验采用直接语音掩蔽启动范式,通过掩蔽词的有、无呈现对切换后单词的读音判断反应时产生影响,进而了解非熟练双语者双语理解切换中非目标语言加工状态。实验结果表明,无呈现掩蔽词组的反应时比有呈现组的判断反应时长;不同掩蔽词呈现时间两组中切换反应时判断不显著。实验证明无论是哪一种语言作为非目标语言,其在词汇层上均都不会被激活;双语词汇理解切换中,切换至熟练语言比切换至不熟练语言切换代价小。     

语言理解转换中非目标语言影响目标语言的时间进程

运用跨语言即时启动和延时启动范式,要求被试完成生物属性的语义判断任务,研究语言理解转换中非目标语言影响目标语言语义理解的时间进程。实验1非目标语言为英文,目标语言为中文,结果表明,无论是即时启动(t = -0.423, p = 0.676),还是延时启动(t = -0.82, p = 0.419),语义相关组与语义无关组都无显著差异。实验2非目标语言为中文,目标语言为英文,结果表明,在即时启动条件下,语义相关组显著快于语义无关组(t = -3.05, p = 0.006),但延时条件下语义相关组与语义无关组无显著差异(t = -0.63, p = 0.536)。综合两个实验结果表明,晚期熟练双语者在双语语言理解转换过程中语义的即时启动影响存在不对称性,语义相关的非目标语言中文对目标语言英文语义理解起促进作用;但是语义启动效应没有得到延时体现。     

非平衡中-英双语者言语产生中非目标语言的语音激活

采用改造的图片命名启动范式考察非平衡中-英双语者在言语产生中非目标语言的语音激活范围。实验1探讨在准备用汉语命名图片后,英语词汇的语音激活。结果发现,英语语音一致词的命名反应快于语音相关词和语音无关词,且语音相关词的命名反应快于语音无关词,说明在一语的产生过程中,二语对等词和相关词的语音都得到了激活。实验2探讨在准备用英语命名图片后,汉语词汇的语音激活。结果发现,汉语语音一致词的命名反应快于语音相关词和语音无关词,而语音相关词与语音无关词之间的命名反应没有显著差异,说明在二语的产生过程中,只有一语对等词的语音得到了激活。总结果表明,非平衡中-英双语者使用目标语言时,非目标语言的语音也可以得到激活,并且激活范围可能受非目标语言熟练水平的影响。     

非熟练双语者言语产生中非目标语言的激活范围

采用图-图干扰范式来考察非熟练中-英双语者言语产生中非目标语言的激活范围。实验1探讨用汉语命名时,干扰图的英语名称能否得以激活。结果发现,干扰图的词汇熟悉度高时,音译词的反应时显著长于音韵无关词,而熟悉度低时,二者无显著差异,说明在一语的产生过程中只能激活二语中高熟悉的非目标词。实验2探讨用英语命名时,干扰图的汉语名称能否激活。结果发现,不论熟悉度高还是低,音译词的反应时均显著长于音韵无关词,说明在二语的产生过程中会激活一语中的非目标词。总的结果说明,非熟练中-英双语者在言语产生过程中非目标语言中的非目标词也会激活,并且激活范围既受非目标语言的熟练程度的影响,也受非目标词熟悉度的影响。     

启动任务中语言经验对藏-汉双语者主导语的影响

采用语义启动任务及藏语与汉语语义相关词和无关词对,探究语言经验能否改变熟练藏-汉双语者的母语主导优势和双语语义表征方式。结果表明,1)无论启动词为藏语还是汉语,藏-汉双语者对汉语L2目标词的加工速度和正确率均显著好于藏语L1,存在语义启动效应; 而在藏语目标词条件下则未发现显著的语义启动效应; 2)藏语到汉语的语义启动效应大于汉语到藏语的启动效应。结果表明,藏-汉双语者的汉语经验对藏语词的表征有影响,但汉语还不能完全替代母语藏语为主导语,结果在一定程度上支持Kroll的RHM模型和Green的ICM模型。     

语言产生过程中非目标语言的激活与抑制

运用长时重复启动范式, 探讨熟练和非熟练中－英双语者语言产生过程中非目标语言的激活与抑制。实验1探讨双语被试在学习阶段使用中文进行图片命名任务时, 非目标语言英文概念层面的激活与抑制情况, 结果发现, 两种熟练水平的被试均没有出现重复启动效应; 实验2探讨双语被试在学习阶段使用英文进行图片命名任务时, 非目标语言中文概念层面的激活与抑制情况, 结果发现, 熟练双语被试没有出现重复启动效应, 而非熟练双语被试出现了重复启动效应; 实验3探讨非熟练双语被试在学习阶段使用英文进行图片命名任务时, 非目标语言中文词汇层面的激活与抑制情况, 结果没有出现重复启动效应。综合三个实验的结果可以表明, 熟练中－英双语者语言产生过程中在概念层面上就对非目标语言(不管是一语还是二语)进行了抑制, 而非熟练中－英双语者使用一语时可以在概念层面上抑制非目标语言(二语), 但使用二语时不能在概念层面上抑制非目标语言(一语), 要在词汇层面上才能抑制非目标语言(一语)。     

象似性和手语学习经验对中国手语-汉语跨模态语义启动效应的影响

采用启动条件下的词汇判断任务,考察熟练手语使用者和无手语经验成年听人的跨模态语义启动效应。结果发现：1)在象似词条件下,两组被试判断汉语语义相关词的反应时均快于语义无关词,说明手语象似词和汉语词之间存在跨模态语义启动效应。2)在非象似词条件下,仅手语熟练被试判断汉语语义相关词的反应时快于语义无关词,无手语经验被试判断汉语语义相关词和无关词的速度没有差异。这是由于前者心理词库中的手语词和口语词共享语义表征,而后者主要依赖手语象似词的视觉模拟性。整个研究表明,中国手语和汉语间存在跨模态语义启动效应,但该效应受到手语词象似性和手语学习经历的调节。     

非熟练中-英双语者英语句子语义通达的语境效应

设计不同的语境条件, 并采用图-词语义一致性判断来探测非熟练中-英双语者英语句子的语义通达性, 结果表明, 在无语境条件、语义无关动画或语义相关文本伴音语境下, 非熟练中-英双语者表现出英语句子语义通达的非选择性, 而形象和语义一致的动画语境能使他们有效限制对等的L1句子构成词汇的激活, 并表现出目标句语义通达的选择性。这说明, 语境可以影响弱势语识别阶段的非选择激活, 相关的语境影响双语通达的理论也由此被讨论。     

熟练维-汉双语者汉语语义的通达机制

采用跨语言非掩蔽启动条件下的词汇判断实验范式,通过变换启动刺激和目标刺激的关系,研究了熟练维-汉双语者两种语言间的语义通达方式。结果发现,无论是维语作为启动刺激,还是汉语作为启动刺激,启动刺激与目标刺激之间无论是翻译关系,还是联想关系,启动刺激对目标刺激的识别都产生了显著的促进作用。并且两种方向的启动量没有显著差异。这些结果表明,对于熟练掌握维、汉两种语言的维吾尔族大学生而言,两种语言无论在词汇表征上,还是在概念表征上都建立了很强的联系,两种语言间词汇通达的不对称性已接近消失,支持了Kroll等人提出的整合的层级模型。     

Effects of the degree of meaning similarity on cross-language semantic priming in highly proficient bilinguals

This study aimed to determine if access to meaning can be directly achieved from the words in the two languages, examining the influence of the degree of semantic overlap between related words across languages in the pattern of priming effects. Nonassociative semantically related words (members of the same category) were used, avoiding explicitly associative relationships. Using a priming paradigm, highly proficient Catalan–Spanish bilinguals were visually presented with pairs of words that either were translations of each other, had a very close semantic relationship (in terms of shared features), a close semantic relationship, or no semantic relationship at all. Participants performed either a lexical decision task (Experiment 1) or a semantic decision task (Experiment 2). The main results of the study were the same in both language directions (Spanish–Catalan and Catalan–Spanish), showing that the degree of semantic overlap (in terms of shared features) between words in different languages can modulate priming effects, regardless of the language of the prime and the task used. These results demonstrate that there is cross-language activation of shared semantic representations and, thus, that highly proficient bilinguals can have direct access to word meaning from the two languages.     

Phonological priming in the lexical decision task: A failure to replicate

Some models of the lexicon predict that recognition of words should produce activation spreading to phonologically related words. Consistent with this prediction, Hillinger (1980) demonstrated priming in a visual lexical decision task for word targets preceded by graphemically similar or graphemically dissimilar primes that rhymed with the target. In Experiment 1, we investigated whether this phonological priming effect occurred automatically or because of subject strategies. Although semantically associated primes produced significant facilitation in Experiment 1, no evidence of phonological priming was obtained. Experiments 2 to 5 were conducted in an attempt to obtain the phonological priming effect. Experiment 5 was a replication of one of Hillinger’s experiments. In none of these experiments was phonological priming observed. These results indicate either that the lexicon is not organized such that spreading activation occurs on the basis of phonological similarity, or that visual lexical decisions are made without phonological mediation.     

Code-switching effects in bilingual word recognition: a masked priming study with event-related potentials

Two experiments tested language switching effects with bilingual participants in a priming paradigm with masked primes (duration of 50 ms in Experiment 1 and 100 ms in Experiment 2). Participants had to monitor target words for animal names, and ERPs were recorded to critical (non-animal) words in L1 and L2 primed by unrelated words from the same or the other language. Both experiments revealed language priming (switching) effects that depended on target language. For target words in L1, most of the language switch effect appeared in the N400 ERP component, with L2 primes generating a more negative going wave than L1 primes. For L2 target words, on the other hand, the effects of a language switch appeared mainly in an earlier ERP component (N250) peaking at approximately 250 ms post-target onset, and showing greater negativity following an L1 prime than an L2 prime. This is the first evidence for fast-acting language-switching effects occurring in the absence of overt task switching.     

Asymmetrical cross-language priming effects

Three experiments were conducted to examine cross-language priming in bilinguals. The first was a cross-language primed lexical decision task experiment with Chinese-English bilinguals. Subjects made lexical decisions about primary associate targets in the two languages at the same rate, but priming occurred only when the prime was in their first language (L1), Chinese, and the target was in their second language (L2), English. Experiment 2 produced the same pattern of asymmetrical priming with two alphabetic languages, French and Dutch. In Experiment 3, the crucial stimuli were translation equivalents. In contrast to the results of Experiments 1 and 2, priming occurred across languages in both the L1-L2 and L2-L1 conditions. However, this priming was also asymmetrical, with more priming occurring in the L1-L2 condition. A tentative separate-interconnected model of bilingual memory is described. It suggests that the representations of words expressed in different languages are stored in separate memory systems, which may be interconnected via one-to-one links between same translation-equivalent representations as well as meaning-integration processes.     

非熟练潮-粤双言者的语义通达：来自听觉词加工的证据

采用听觉跨语言启动的语义判断范式, 考察非熟练潮-粤双言者的两种方言之间的语义通达方式。结果发现, 无论是以潮语词为启动词, 还是以粤语词为启动词, 当二者具有翻译关系时, 启动词均促进对目标词的识别, 但L1对L2的启动量比L2对L1的启动量大。当启动词与目标词具有语义联想关系时, 启动词亦能促进对目标词的识别, 但L1→L2与L2→L1的启动量差异不显著。整个研究表明, 非熟练潮-粤双言者的两种方言的词汇独立表征, 语义共享表征; 第二方言的词汇能够直接通达语义表征, 不需要以第一方言的词汇为中介, 但双言的词汇表征与语义表征的联结强度仍然存在着不对称性。     

中-英双语者语言理解中非加工语言的自动激活

采用长时重复启动范式探讨母语为汉语的中-英双语者语言理解中非加工语言的激活状况。实验1和实验2使用词汇判断任务, 实验3和实验4使用概念判断任务。在每个实验的第一个小实验中, 非加工语言是英文, 在每个实验的第二个小实验中, 非加工语言是中文。实验1和实验3探讨学习阶段的非加工词在测验阶段呈现时能否出现长时重复启动效应, 从而检验双语者语言理解中非加工语言有没有自动激活; 实验2和实验4探讨学习阶段的非加工词在测验阶段以翻译对等词呈现时能否出现长时重复启动效应, 从而检验双语者语言理解中非加工语言的语义有没有自动激活。总的实验结果表明, 母语为汉语的中-英双语者在语言理解过程中, 加工一种语言(目标语言)时, 非加工语言(要求被试忽略的另一种语言)会自动激活, 但在词汇任务情境中, 非加工语言只在词汇层面上激活, 其语义不会自动激活, 而在概念任务情境中, 非加工语言的词汇层面和语义层面都会自动激活。