Lexical Decision Research Articles

Consonant bias in adult lexical processing under acoustically degraded listening conditions.

Consonants facilitate lexical processing across many languages, including French. This study investigates whether acoustic degradation affects this phonological bias in an auditory lexical decision task. French words were processed using an eight-band vocoder, degrading their frequency modulations (FM) while preserving original amplitude modulations (AM). Adult French natives were presented with these French words, preceded by similarly processed pseudoword primes sharing their vowels, consonants, or neither. Results reveal a consonant bias in the listeners' accuracy and response times, despite the reduced spectral and FM information. These degraded conditions resemble current cochlear-implant processors, and attest to the robustness of this phonological bias.

The Involvement of Broca’s Area and Its Right-Hemispheric Homologue in Acquiring Abstract and Concrete Semantics: Transcranial Direct-Current Stimulation Study

The study compared effects of transcranial direct current stimulation (tDCS) of Broca’s area and of its right-hemispheric homologue on the acquisition of novel concrete and abstract words. Word/concept acquisition was achieved through reading sets of sentences, which incorporated novel words, gradually revealing their meaning through context. Before the learning session, a 15-minute anodal or cathodal stimulation of one of the target areas was applied. Lexical decision task was used to assess the learning outcomes immediately after the learning session and 24 hours later. The results showed a larger number of correct responses after right-hemispheric tDCS, in comparison with that of Broca’s area in the left hemisphere. These results suggest that the right-hemispheric counterpart of Broca’s areas is involved in the processing and acquisition of new concrete and abstract semantics. Furthermore, they demonstrate facilitatory effects of tDCS on the processes of overnight consolidation of newly formed word memory traces.

UNNOTICED BUT NOT FORGOTTEN: EEG-CORRELATES OF AMBIGUOUS FIGURES PRIMING EFFECTS

In order to find evidence of the inhibition or episodic retrieval account to explain the effect of negative priming, a study of behavioral and EEG-correlates of ambiguous figures perception, which are used as primes for the lexical decision task. It is shown that at the behavioral level the noticed meanings of used images demonstrate a positive, unnoticed – a negative priming-effect. EEG correlates of these effects in the anterio-central regions of the brain were revealed. Thus, the correlate of positive priming is attenuation of the N400 component, and the correlate of negative priming is attenuation of the late positive complex. Both components are considered in the literature as indicators of episodic retrieval, a memory-related process. The fact that the priming effect of the unnoticed meanings of ambiguous figures at the psychophysiological level is expressed in memory phenomena leads to the conclusion that the subjects remember the meanings they did not notice.

Chinese JSL/JFL learners' online perception of Japanese verb conjugations: Evidence from a behavioral study

Verb conjugation is essential in learning Japanese as a second or foreign language (JSL/JFL). Previous studies showed that Chinese JSL/JFL beginners behaved differently in acquiring Japanese verb conjugations, but the results were obtained from offline tests (e.g., writing examination without time limitation), hard to reflect the real perception. On this background, the current study adopted a time-controlled lexical decision task (real-time automatic processing) to explore how Chinese intermediate JSL/JFL learners processed four types of verb conjugations (i.e., masu/tai form, te/ta form, nai form and yoo form). Based on the error rates and RTs collected form 27 Chinese intermediate JSL/JFL learners, the results showed that the JSL/JFL learners processed better in masu/tai form and te/ta form, followed by nai form and yoo form. The discrepant processing of the four types of Japanese verb conjugations suggests that the JSL/JFL learners do have difficulties in Japanese acquisition. Finally, a general discussion is offered from the perspective of verb conjugations' frequency, JSL/JFL learners' learning strategy and Japanese teaching method.

Visual event-related potentials reveal the early whole-word lexical processing of Chinese two-character words

Morphologically complex words are common across different languages, especially in Chinese, because more than 90% of common modern Chinese words are complex words. Many behavioral studies have suggested the whole-word processing of Chinese complex words, but the neural correlates of whole-word processing remain unclear. Previous electrophysiological studies revealed automatic and early (∼250 ms) access to the orthographic forms of monomorphic words in the ventral occipitotemporal area. In this study, we investigated whether there is also automatic and early orthographic recognition of Chinese complex words (as whole units) by recording event-related potentials (ERPs). A total of 150 two-character words and 150 two-character pseudowords composed of the same 300 characters (morphemes) were pseudorandomly presented to proficient Chinese readers. Participants were required to determine the color of each stimulus in the color decision task and to determine whether each stimulus was a word in the lexical decision task. The two constituent characters of each stimulus were horizontally arranged in Experiment 1 and vertically arranged in Experiment 2. The results revealed a significant early ERP difference between words and pseudowords approximately 250–300 ms after stimulus onset in the parieto-occipital scalp region. The early ERP difference was more prominent in the color decision task than in the lexical decision task, more prominent in Experiment 1 than in Experiment 2, and more prominent in the left parieto-occipital scalp region than in the right. Source analysis results showed that the early ERP difference originated from the left ventral occipitotemporal cortex. These results reflected early and automatic access to whole-word orthographic representations of Chinese complex words in the left ventral occipitotemporal cortex.

Morphological decomposition in Chinese compound word recognition: Electrophysiological evidence

The present study examined the effect of both morphological complexity and semantic transparency in Chinese compound word recognition. Using a visual lexical decision task, our electrophysiological results showed that transparent and opaque compounds induced stronger Left Anterior Negativity (LAN) than monomorphemic words. This result suggests that Chinese compounds might be decomposed into their constituent morphemes at the lemma level, whereas monomorphemic words are accessed as a whole-word lemma directly from the form level. In addition, transparent and opaque compounds produced a similar N400 as each other, suggesting that transparency did not show an effect on the involvement of constituent morphemes during access to the whole-word lemma. Two behavioral experiments additionally showed similar patterns to the EEG results. These findings support morphological decomposition for compounds at the lemma level as proposed by the full-parsing model, and no evidence is found to support the role of transparency during Chinese compound word recognition.

Semantic priming from McGurk words: Priming depends on perception.

The McGurk effect is an illusion in which visible articulations alter the perception of auditory speech (e.g., video 'da' dubbed with audio 'ba' may be heard as 'da'). To test the timing of the multisensory processes that underlie the McGurk effect, Ostrand et al. Cognition151, 96-107,2016used incongruent stimuli, such as auditory 'bait' + visual 'date' as primes in a lexical decision task. These authors reported that the auditory word, but not the perceived (visual) word, induced semantic priming, suggesting that the auditory signal alone can provide the input for lexical access, before multisensory integration is complete. Here, we conceptually replicate the design of Ostrand et al. (2016), using different stimuli chosen to optimize the success of the McGurk illusion. In contrast to the results of Ostrand et al. (2016), we find that the perceived (i.e., visual) word of the incongruent stimulus usually induced semantic priming. We further find that the strength of this priming corresponded to the magnitude of the McGurk effect for each word combination. These findings suggest, in contrast to the findings of Ostrand et al. (2016), that lexical access makes use of integrated multisensory information which is perceived by the listener. These findings further suggest that which unimodal signal of a multisensory stimulus is used in lexical access is dependent on the perception of that stimulus.

Establishing semantic relatedness through ratings, reaction times, and semantic vectors: A database in Polish.

This study presents a Polish semantic priming dataset and semantic similarity ratings for word pairs obtained with native Polish speakers, as well as a range of semantic spaces. The word pairs include strongly related, weakly related, and semantically unrelated word pairs. The rating study (Experiment 1) confirmed that the three conditions differed in semantic relatedness. The semantic priming lexical decision study with a carefully matched subset of the stimuli (Experiment 2), revealed strong semantic priming effects for strongly related word pairs, whereas weakly related word pairs showed a smaller but still significant priming effect relative to semantically unrelated word pairs. The datasets of both experiments and those of SimLex-999 for Polish were then used in a robust semantic model selection from existing and newly trained semantic spaces. This database of semantic vectors, semantic relatedness ratings, and behavioral data collected for all word pairs enable future researchers to benchmark new vectors against this dataset. Furthermore, the new vectors are made freely available for researchers. Although similar semantically strongly and weakly related word pairs are available in other languages, this is the first freely available database for Polish, that combines measures of semantic distance and human data.

Prospective memory decision control: A computational model of context effects on prospective memory.

Prospective memory (PM) tasks require remembering to perform a deferred action and can be associated with predictable contexts. We present a theory and computational model, prospective memory decision control (PMDC), of the cognitive processes by which context supports PM. Under control conditions, participants completed lexical decisions. Under PM conditions, participants had the additional PM task of responding to letter strings containing certain syllables. Stimuli were presented in one of two colors, with color potentially changing after each set of four trials. A pretrial colored fixation was presented before each set. Under control and PM standard conditions, fixation color was meaningless. Under PM context conditions, fixation color indicated whether a PM target could occur within the next set. We replicated prior findings of higher PM accuracy for context compared to standard conditions, and the expected variation in PM costs (slowed lexical decisions) as a function of context relevance. PMDC, which formalizes PM as a process of evidence accumulation among ongoing and PM task responses, accounted for the impact of context on PM costs and accuracy via proactive and reactive cognitive control. Increased ongoing task thresholds and decreased PM thresholds in relevant contexts indicated proactive control. With context provision, PM accumulation rates on PM trials increased, as did inhibition of accumulation to competing responses, indicating reactive control. Although an observed capacity-sharing effect explained some portion of PM costs, we found no evidence that participants redirected more capacity from the ongoing to the PM task when contextually cued to relevant contexts. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

UniPseudo: A universal pseudoword generator.

Pseudowords are letter strings that look like words but are not words. They are used in psycholinguistic research, particularly in tasks such as lexical decision. In this context, it is essential that the pseudowords respect the orthographic statistics of the target language. Pseudowords that violate them would be too easy to reject in a lexical decision and would not enforce word recognition on real words. We propose a new pseudoword generator, UniPseudo, using an algorithm based on Markov chains of orthographic n-grams. It generates pseudowords from a customizable database, which allows one to control the characteristics of the items. It can produce pseudowords in any language, in orthographic or phonological form. It is possible to generate pseudowords with specific characteristics, such as frequency of letters, bigrams, trigrams, or quadrigrams, number of syllables, frequency of biphones, and number of morphemes. Thus, from a list of words composed of verbs, nouns, adjectives, or adverbs, UniPseudo can create pseudowords resembling verbs, nouns, adjectives, or adverbs in any language using an alphabetic or syllabic system.

A single dose of hydrocortisone does not alter interhemispheric transfer of information or transcallosal integration.

Stress has been suggested as a factor that may explain the link between altered functional lateralization and psychopathology. Modulation of the function of the corpus callosum via stress hormones may be crucial in this regard. Interestingly, there is evidence that interhemispheric integration and hemispheric asymmetries are modifiable by endocrinological influences. In previous studies, our group could show an enhancing effect of acute stress on interhemispheric integration. To investigate if this effect can be attributed to an increase in the stress hormone cortisol, 50 male participants received 20 mg hydrocortisone or a placebo in a double-blind crossover design. In each test session, we collected EEG data while participants completed a lexical decision task and a Poffenberger paradigm. In the lexical decision task, we found shorter latencies of the N1 ERP component for contralateral compared to ipsilateral presentation of lexical stimuli. Similarly, we replicated the classical Poffenberger effect with shorter ERP latencies for stimuli presented in the contralateral visual field compared to the ipsilateral visual field. However, no effect of cortisol on latency differences between hemispheres could be detected. These results suggest that a temporary increase in cortisol alone might not be enough to affect the interhemispheric transfer of information via the corpus callosum. Together with previous results from our group, this suggests that chronically elevated stress hormone levels play a more central role in the relationship between altered hemispheric asymmetries and a variety of mental disorders.

Linguistic and emotional responses evoked by pseudoword presentation: An EEG and behavioral study

When the semantic properties of words are turned off, such as in pseudowords, the grammatical properties of the stimuli indicated through suffixes may provide cues to the meaning. The application of electroencephalography (EEG), combined with the pseudoword paradigm, allows for evaluating the effects of verbs and nouns as linguistic categories within the time course of processing. To contribute to the ongoing discussion regarding the functional processing of words from different grammatical classes, we conducted an EEG experiment, followed by a behavioral lexical decision task (LDT). The EEG and LDT indicated different neural and behavioral reactions to the presented grammar classes, allowing for a deeper understanding of the neuro- and psycholinguistic dimensions of grammar.

Bidirectional cross-linguistic influence with different-script languages: Evidence from eye tracking

AbstractThis study compared patterns of nonselective cross-language activation in L1 and L2 visual word recognition with different-script bilinguals. The aim was to determine (1) whether lexical processing is nonselective in the L1 (as in L2), and (2) if the same cross-linguistic factors affected processing similarly in each language. To examine the time course of activation, eye movements were tracked during lexical decision. Thirty-two Japanese–English bilinguals responded to 250 target words in Japanese and in English. The same participants and items (i.e., cognate translation equivalents) were used to directly compare L1 and L2 processing. Response latencies as well as eye movements representing early and late processing were analyzed using mixed-effects regression modeling. Similar cross-linguistic effects, namely cognate word frequency, phonological similarity, and semantic similarity, were found in both languages. These factors affected processing to different degrees in each language, however. While cognate frequency was significant as early as the first fixation, effects of cross-linguistic phonological and semantic similarity arose later in time. Increased phonological similarity slowed responses in L2 but speeded them in L1, while greater semantic overlap was facilitatory in both languages. Results are discussed from the perspective of the BIA+ model of visual word recognition.

Electrophysiological Evidence Reveals the Asymmetric Transfer from the Right to Left Hemisphere as Key to Reading Proficiency.

The present investigation aimed to explore the interhemispheric interactions that contribute to changes in reading proficiency by examining the processing of visual word recognition in relation to word familiarity. A lexical decision task was administered to 25 participants, and their electrophysiological activity was recorded. A behavioral analysis showed the faster and more accurate processing of highly familiar words compared to less familiar ones. An event-related potential analysis uncovered an asymmetric familiarity effect over the N100 and N400 components across the two hemispheres, indicating an asymmetrical word familiarity processing. Granger causality analyses demonstrated a stronger transfer of information from the right hemisphere (RH) to the left hemisphere (LH) during the N100 processing and a weaker transfer from the LH to the RH during the N400 processing for highly familiar word recognition. These findings suggest that the asymmetric coordination between the RH and LH occurs early in visual word recognition and highlight the importance of interhemispheric interactions in efficient visual word recognition and proficient reading.

Higher judgements of learning for emotional words: processing fluency or memory beliefs?

ABSTRACT Previous research has shown that emotionally-valenced words are given higher judgements of learning (JOLs) than are neutral words. The current study examined potential explanations for this emotional salience effect on JOLs. Experiment 1 replicated the basic emotionality/JOL effect. In Experiments 2A and 2B, we used pre-study JOLs and assessed memory beliefs qualitatively, finding that, on average, participants believed that positive and negative words were more memorable than neutral words. Experiment 3 utilised a lexical decision task, resulting in lower reaction times (RTs) for positive words than for neutral words, but equivalent RTs for negative and neutral words, suggesting that processing fluency may partially account for higher JOLs for positive words, but not for negative words. Finally, we conducted a series of moderation analyses in Experiment 4 which assessed the relative contributions of fluency and beliefs to JOLs by measuring both factors in the same participants, showing that RTs made no significant contribution to JOLs for either positive or negative words. Our findings suggest that although positive words may be more fluently processed than neutral words, memory beliefs are the primary factor underlying higher JOLs for both positive and negative words.

Perceptual effects of lexical competition on Cantonese tone categories

Listeners use lexical information and the speech signal to categorize sounds and recognize words despite substantial acoustic-phonetic variation in natural speech. In diachronic mergers, where systematic variation acts to neutralize lexical contrasts, the role of the lexicon becomes less clear. We examined how lexical competition structures phonetic variability of (merging) lexical tone categories in Cantonese using three experiments. Listeners categorized tokens from lexical tone continua generated from minimal pairs (Experiment 1: Word identification) and categorized tokens from tone continua generated from word-nonword pairs (Experiment 2: Lexical decision). The presence of a lexical competitor at both continuum endpoints in Experiment 1 maintained more discrete categorization functions for non-merging tone pairs than in Experiment 2 where only one endpoint was a word. In the merging tone pairs, categorization was less discrete and the effect of lexical competition was different. Exploratory data from a goodness rating task, Experiment 3, suggest that lexical competition affects internal category structure for merging tones, but not non-merging tones. Overall, these data provide evidence that tone mergers affect phonetic category boundaries and internal category structure in the lexicon, and that, for non-merging tones, the range of acceptable phonetic variation is constrained by the presence of a lexical competitor.

Relatively Inefficient Integration of Metaphorical Semantics in Autistic Adults Without Intellectual Impairment.

Individuals diagnosed with autism are often thought to face challenges in comprehensive metaphors, even for the individuals without intellectual impairment. This study is to investigate the features and mechanisms of metaphor integration in the process of metaphor comprehension in real-time and context-free situations in autism, as well as the influence of the mental complexity of metaphor. Twenty autistic adults and twenty typically developing peers carried out a Lexical Decision Task and a Recognition Task. The results of the study showed that, there are deficiencies in real-time metaphor comprehension in autistic adults without intellectual impairment. It may caused by their relatively inefficient integration of metaphor semantics. This mechanism was equally pronounced in the metaphors with different mental complexity.

A Spacing Contribution on the Retention of L2 Word Forms and Meanings

This study examined the contribution of spacing on facilitating learning and retention of L2 word forms and meanings. 38 Saudi Arabian learners of English studied 30 English words (beyond their current language proficiency) using a spaced and massed displays. The former refers to the frequent distribution of repetition across multiple learning sessions, whereas the latter deals with the repetition of words into one single learning session. The 15 lexemes, hence, under the massed condition were classified into three categories of five words, each set was studied three times in one of the three sessions, whereas the other set of words were studied under the spaced condition in which all 15 words were learned once in each of the three sessions. One offline test was conducted to measure the meaning of word knowledge, and one online lexical decision task measured respondents’ accuracy and speed in recognizing the form of target words. These two tests were administrated in immediate post-test (IPT) and delayed post-test (DPT), conducted two weeks later. The results show that the meaning and form of spaced L2 words are learned and retained better than those of massed L2 words. The reaction time (RT) results also show that L2 learners who are under the spaced condition are faster in recognizing L2 target word forms than those who are under the massed condition. These findings can have meaningful theoretical and pedagogical implications for developing L2 vocabulary learning and retention.

한글 시각 단어재인 시의 동음이의어 이득 효과: 어휘판단과제로부터의 증거

The purpose of this study is to examine how homonyms are processed in Korean visual word recognition. In Experiment 1, forty homonyms with unbalanced meaning dominance, 40 control words with a single meaning, and 80 nonwords were selected. Participants conducted a lexical decision task, in which they were asked to decide the lexicality of the letter strings and respond as rapidly as possible without any sacrifice of accuracy. The results showed that homonyms responded faster than monosemic words. In Experiment 2, a consistent pattern of results with those of Experiment 1 was found when homonyms with balanced meaning dominance were used. These results suggest that ambiguous word advantage should be observed in Korean visual word recognition. Theoretical models of visual word recognition were discussed regarding the ambiguous word advantage in visual word recognition.

Automated Measures of Lexical Sophistication: Predicting Proficiency in an Integrated Academic Writing Task

Background. Advances in automated analyses of written discourse have made available a wide range of indices that can be used to better understand linguistic features present in language users’ discourse and the relationships these metrics hold with human raters’ assessments of writing.
 Purpose. The present study extends previous research in this area by using the TAALES 2.2 software application to automatically extract 484 single and multi-word metrics of lexical sophistication to examine their relationship with differences in assessed L2 English writing proficiency.
 Methods. Using a graded corpus of timed, integrated essays from a major academic English language test, correlations and multiple regressions were used to identify specific metrics that best predict L2 English writing proficiency scores.
 Results. The most parsimonious regression model yielded four-predictor variables, with total word count, orthographic neighborhood frequency, lexical decision time, and word naming response time accounting for 36% of total explained variance.
 Implications. Results emphasize the importance of writing fluency (by way of total word count) in assessments of this kind. Thus, learners looking to improve writing proficiency may find benefit from writing activities aimed at increasing speed of production. Furthermore, despite a substantial amount of variance explained by the final regression model, findings suggest the need for a wider range of metrics that tap into additional aspects of writing proficiency.