Low-frequency Words Research Articles

A Corpus-based Study of Vocabulary in the New Concept English Textbook Series

Growing a large vocabulary is one of the most important tasks of language learners and yet research reports on low levels of lexical knowledge for English as a foreign language (EFL) learners. In EFL contexts, textbooks are a vital source of exposure to English and the words that are worth learning. The New Concept English textbook series is widely used in China by large numbers of learners in secondary schools and cram schools, and in preparation for university studies. This study finds that while learners will encounter mostly high-frequency vocabulary in these books, they will need to know between 3000 and 6000 word families to cope with these texts, and Book 4 requires 1000 more word families than Book 3. Science-related texts in the books contribute to the vocabulary load because they contain a large proportion of low-frequency words used only once and have a higher vocabulary load than humanities texts. There are opportunities for learning mid-frequency vocabulary in these textbooks. Limitations of current research and suggestions for future research are also presented.

Interactions Between Lower- and Higher-Level Processing When Reading in a Second Language: An Eye-Tracking Study

ABSTRACT This experiment investigated interactions between lower- and higher-level processing when reading in a second language (L2). We conducted an eye-tracking experiment with the within-subject manipulation inconsistency (to tap higher-level coherence-building) crossed with a within-subject manipulation of word-processing difficulty (to alter the ease of lower-level processing), both manipulated on the text level. Sixty-three L2 learners read 48 short expository texts containing inconsistencies created through mismatches between pretargets such as soya and targets such as corn, or consistent controls. Word-processing difficulty was manipulated by inserting either shorter and higher-frequency words such as often or longer and lower-frequency words such as increasingly. We found evidence of interactions between lower-level word-processing difficulty and higher-level coherence building, as revealed by reduced a inconsistency effect showing in go-past durations and rereading in the difficult condition. This effect did not, however, extend to targeted regressions into inconsistent information. Our findings provide the first experimental evidence for online interactions between lower-level word processing and higher-level coherence building.

The impact of skim reading and navigation when reading hyperlinks on the web.

It has been shown that readers spend a great deal of time skim reading on the Web and that this type of reading can affect lexical processing of words. Across two experiments, we utilised eye tracking methodology to explore how hyperlinks and navigating webpages affect reading behaviour. In Experiment 1, participants read static Webpages either for comprehension or whilst skim reading, while in Experiment 2, participants additionally read through a navigable Web environment. Embedded target words were either hyperlinks or not and were either high-frequency or low-frequency words. Results from Experiment 1 show that while readers lexically process both linked and unlinked words when reading for comprehension, readers only fully lexically process linked words when skim reading, as was evidenced by a frequency effect that was absent for the unlinked words. They did fully lexically process both linked and unlinked words when reading for comprehension. In Experiment 2, which allowed for navigating, readers only fully lexically processed linked words compared to unlinked words, regardless of whether they were skim reading or reading for comprehension. We suggest that readers engage in an efficient reading strategy where they attempt to minimise comprehension loss while maintaining a high reading speed. Readers use hyperlinks as markers to suggest important information and use them to navigate through the text in an efficient and effective way. The task of reading on the Web causes readers to lexically process words in a markedly different way from typical reading experiments.

Age differences in cross-task bleeding.

The present study investigated age-related differences in the ability to constrain attention to the current task, without contamination (bleeding) from an upcoming decision. Each experiment included two blocks of trials. During Block 1, participants initially incidentally encoded a list of high- and low-frequency words, after which they pronounced aloud the studied words intermixed with a new set of words during a test phase. Block 2 was identical to Block 1 with the exception that after pronouncing each word aloud, participants made an additional decision (episodic recognition decision in Experiments 1 and 2 and animacy decision in Experiment 3). In the first two experiments, older adults showed disproportionate slowing in their response times to pronounce the words when they additionally had to make a recognition judgment afterward (Block 2) compared to when they only pronounced the words aloud (Block 1). Importantly, the difference between high-frequency and low-frequency words (the word frequency effect) was disproportionately attenuated for older adults in Block 2 compared to Block 1 and compared to younger adults. These results suggest that older adults experience greater cross-task bleeding than younger adults because word frequency has opposing effects in pronunciation and recognition tasks. As predicted, this age modulation of the word frequency effect in pronunciation performance was not replicated in Experiment 3 when participants made an animacy judgment, wherein word frequency effects act in concert with those of the pronunciation task. Discussion focuses on age-related differences in the ability to constrain attention to a current task. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

The hunt for the age of acquisition effect: It's in the links!

The Age of Acquisition (AoA) effect is such that words acquired early in life are processed more quickly than later-acquired words. One explanation for the AoA effects is the arbitrary mapping hypothesis (Ellis & Lambon-Ralph, 2000), stating that the AoA effects are more likely to occur in items that have an arbitrary, rather than a systematic, nature between input and output. Previous behavioural findings have shown that the AoA effects are larger in pictorial than word items. However, no behavioural studies have attempted to directly assess the AoA effects in relation to the connections between representations. In the first two experiments, 48 participants completed a word-picture verification task (Experiments 1A and 2A), together with a spoken (Experiment 1B) or written (Experiment 2B) picture naming task. In the third and fourth experiments, 48 participants complete a picture-word verification task (Experiments 3A and 4A), together with a spoken (Experiment 3B) or written (Experiment 4B) word naming task. For each pair of experiments the subtraction of the naming latencies from the verification tasks for each item per participant was calculated (Experiments 1-4C; e.g. Santiago, Mackay, Palma & Rho, 2000). Results showed that early-acquired items were responded to more quickly than late-acquired ones for all experiments, except for Experiment 3B (spoken word naming) where the AoA effect was shown for only low-frequency words. In addition, the subtraction results for pictorial stimuli demonstrated strong AoA effects. This strengthens the case for the AM hypothesis, also suggesting the AoA effect resides in the connections between representations.

Probing language processing in cochlear implant users with visual word recognition: effects of lexical and orthographic word properties

ABSTRACT Deaf individuals who learned a spoken language with the aid of a cochlear implant (CI) often experience difficulties with reading. In the present study, we investigate this issue by assessing the impact of lexical and orthographic predictors on visual word recognition in early and late deaf CI-users. Early deaf CI-users were comparable to age-matched hearing controls, for both response accuracy and latencies, whereas late deaf CI-users were slower albeit similarly accurate with respect to age-matched controls. Analyses of the impact of lexical and orthographic predictors, however, revealed that early deaf-CI users were slower than controls in recognising low frequency words and words with high proportion of consonants. In conclusion, early deaf individuals who developed their language using a CI show qualitative differences in visual word processing, above and beyond the overall performance. This suggests that typical overall performance may emerge also in the context of atypical lexical and word form representations.

Word's Contextual Predictability and Its Character Frequency Effects in Chinese Reading: Evidence From Eye Movements.

The present study sought to establish how a word’s contextual predictability impacts the early stages of word processing when reading Chinese. Two eye-movement experiments were conducted in which the predictability of the target two-character word was manipulated; the frequency of the target’s initial character was manipulated in Experiment 1, as was the target’s end character frequency in Experiment 2. No reliable interaction effect of predictability with initial character frequency was observed in Experiment 1. Reliable interactions of word predictability with end character frequency were observed in Experiment 2. The end character frequency effects, in which the words with high-frequency end characters were fixated for a shorter time and re-fixated less often, were only observed when reading unpredictable words. Reliable interactions were also observed with incoming saccade length, as high-frequency end character words elicited longer saccades to themselves than low-frequency end character words when reading predictable words. The effects of pervasive predictability on measures of fixation time, probability, and saccade length were noted in both experiments. Our findings suggest that a word’s contextual predictability facilitates the processing of its constituent characters.

Age of acquisition ratings for 19,716 simplified Chinese words.

This study collected age-of-acquisition (AoA) norms for 19,716 simplified Chinese words provided by 1765 native speakers of Mandarin Chinese. Analysis of demographic factors revealed both gender and cohort differences in ratings and thus differences in trajectory of vocabulary development, suggesting the utility of AoA ratings to investigate individual differences and societal changes in levels of academic achievement. Moreover, consistent with past analysis conducted with English words, AoA ratings accounted for an extra portion of variance in lexical processing above and beyond the most prominent predictor, word frequency. Further analysis suggested that AoA ratings might be more predictive of processing low frequency words relative to high frequency words. Cross-language comparison also indicated that future research should explore the unique factors implicated in the processing of Chinese words.

Temporal dynamics of free recall: The role of rehearsal efficiency in word frequency and bilingual language proficiency effects.

Under a recall model in which presentations and rehearsals are treated as equivalent encoding events, we investigated whether rehearsal efficiency differences explain the effects of word frequency and bilingual proficiency on the temporal dynamics of rehearsal and free recall. Experiments 1 and 3 were conducted with monolingual English speakers, and Experiments 2 and 4 were conducted with Spanish-English bilinguals with matched age, education, and socioeconomic status. In Experiments 1 and 2, lower word frequency, lower proficiency, and bilingualism were associated with less accurate free recall of items from early serial positions, beginning recall with items from later serial positions, and making fewer transitions to items from later or adjacent serial positions. These effects were replicated and rehearsal-based explanations were validated in Experiments 3 and 4 using a rehearse-aloud protocol. With lower frequency words or lower language proficiency, rehearsal was less efficient with fewer rehearsals between item presentations. As a result, items from early serial positions had fewer rehearsals that stopped earlier in the study sequence, less spacing between repeated rehearsals, and fewer transitions to items from later or adjacent serial positions. Rehearsal-contingent analyses revealed that these rehearsal patterns were associated with less accurate recall, beginning recall with items from later serial positions, and consistent transition patterns from rehearsal to recall. These patterns support a model in which presentations and rehearsals are treated as equivalent encoding events and the effects of word frequency and language proficiency on recall accuracy are mediated by less efficient rehearsal. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

English Students’ Vocabulary Size and Level at a Private University in West Java, Indonesia

The research investigated the EFL (English as a Foreign Language) undergraduate students’ vocabulary knowledge (size and level). The research involved 40 second-semester students who were enrolling in two reading courses at an English Department in a private university in West Java, Indonesia. Vocabulary Size Test by Nation and Beglar; and Vocabulary Level Test by Webb, Sasao, and Ballance were used to gain data. It is found that the participants’ average vocabulary size is 8.732,5 word-families. The finding of the research also reveals that only ten students master 1.000-5.000 word-levels. It means that despite a big vocabulary size that many students have, 75% of them only know a limited high and mid-frequency vocabulary. The findings imply that the students still need to read graded readers to master high and mid-frequency levels. The current research project also indicates that the students might have met more low-frequency words than high and mid-frequency words in their language learning prior to their current extensive reading program.

Characterizing lexicalization and self-monitoring processes in bilingual speech production

Abstract The present study aimed to explore the bilingual disadvantage in the course of speech production by comparing the naming performance and the temporal dynamics of object naming in three groups of participants: monolinguals, L1 bilinguals and L2 bilinguals. To determine the origin of the bilingual disadvantage, whether lexical or post-lexical, we manipulated the lexical frequency of the picture names across repetitions. The ERP frequency effect (ERPs associated to high versus low-frequency words) across repetitions, taken as an estimate of lexical processing, was explored before and after articulation was engaged and compared across groups. Additionally, to explore the extent of the bilingual disadvantage in the course of naming, correct responses and errors were compared across groups in the same time-ranges in which lexical frequency was measured. The results before articulation showed earlier frequency effects for monolinguals than bilinguals, while no differences were observed between the two groups of bilinguals. Correctness effects appeared with a similar chronometry as the frequency effects and only for monolinguals. After articulation onset, the three groups of participants showed a larger positivity for low-frequency words and only monolinguals showed frontal error-related activity, supporting that monitoring mechanisms in charge of detecting conflicting responses are influenced by bilingualism. These results suggest a lexical origin of the bilingual disadvantage, with bilinguals being delayed relative to monolinguals in engaging lexical selection. Furthermore, they suggest that self-monitoring might not be implemented in the same way in bilinguals and monolinguals.

The lexical access of multiple words during a single fixation: overlapping access processes?

ABSTRACT Since it has become increasingly difficult to tease apart the predictions of serial and parallel models of eye movement control during reading, we return to the underlying theoretical question of whether parallel lexical processing of two words is, at the very least, psychologically plausible. Two horizontally aligned letter strings were presented simultaneously on a screen, the task being to decide whether they were physically identical or not. Even with presentation durations short enough to prohibit serial inspection of each word, the results show clear lexical effects: high frequency word pairs were responded to faster and with fewer errors than low frequency words. Effects of lexicality, orthography and scanning direction were also found. The results suggest that two words can be processed at a lexical level in an overlapping fashion.

CSR Image Construction of Chinese Construction Enterprises in Africa Based on Data Mining and Corpus Analysis

Since there is negative coverage of some western media on the business activities of Chinese overseas enterprises, which has adverse impact on the image of Chinese enterprises and even the national image of China, this study aims to detect the corporate social responsibility image (hereafter CSR image) of Chinese construction enterprises in Africa (hereafter CCEA) through analyzing the coverage of Financial Times (hereafter FT) from the UK and The Wall Street Journal (hereafter WSJ) from the US and dig up the motives behind their coverage. Octopus is first applied to mine and collect the reports data on CCEA from 2011 to 2019 by the two media. Two small corpora including the reports are then built. NVivo is next used to do the statistical analysis and clustering analysis of the keywords in two corpora as a whole and AntConc is finally utilized to do the statistics of high-frequency evaluative adjectives and nouns modified by evaluative adjectives as well as the concordance of the low-frequency words but closely relevant to corporate social responsibility (hereafter CSR) in two corpora, respectively. The results of the detailed analyses of the keywords are combined to unveil the CSR image of CCEA, which is followed by a discussion about the motives behind the coverage and finally some suggestions are put forward to improve the CSR image of CCEA. Theoretically, the present study promotes the interaction among data science, management, communications, and linguistics; practically it offers some advice to CCEA to elevate their CSR image.

What is semantic diversity and why does it facilitate visual word recognition?

Previous research has speculated that semantic diversity and lexical ambiguity may be closely related constructs. Our research sought to test this claim in respect of the semantic diversity measure proposed by Hoffman et al. (2013). To this end, we replicated the procedure described by Hoffman et al., Behavior Research Methods, 45(3), 718–730 (2013) for computing multidimensional representations of contextual information using Latent Semantic Analysis, and from these we derived semantic diversity values for 28,555 words. We then replicated the facilitatory effect of semantic diversity on word recognition using existing data resources and observed this effect to be greater for low-frequency words. Yet, we found no relationship between this measure and lexical ambiguity effects in word recognition. Further analysis of the LSA-based contextual representations used to compute Hoffman et al. (2013) measure of semantic diversity revealed that they do not capture the distinct meanings of ambiguous words. Instead, these contextual representations appear to capture general information about the topics and types of written material in which words occur. These analyses suggest that the semantic diversity metric previously proposed by Hoffman et al. (2013) facilitates word recognition because high-diversity words are likely to have been encountered no matter what one has read, whereas many participants may not have encountered lower-diversity words simply because the topics and types of written material in which they occur are more restricted.

Attention-Sharing Initiative of Multimodal Processing in Simultaneous Interpreting

This study sets out to describe simultaneous interpreters' attention-sharing initiatives when exposed under input from both videotaped speech recording and real-time transcriptions. Separation of mental energy in acquiring visual input accords with the human brain's statistic optimization principle where the same property of an object is presented through diverse fashions. In examining professional interpreters' initiatives, the authors invited five professional English-Chinese conference interpreters to simultaneously interpret a videotaped speech with real-time captions generated by speech recognition engine while meanwhile monitoring their eye movements. The results indicate the professional interpreters' preferences in referring to visually presented captions along with the speaker's facial expressions, where low-frequency words, proper names, and numbers gained greater attention than words with higher frequency. This phenomenon might be explained by the working memory theory in which the central executive enables redundancy gains retrieved from dual-channel information.

Translation of Ambiguous Words by Translation Trainees

Ambiguity has attracted the attention of researchers from many disciplines. With the aim of providing a perspective from translation, this psycholinguistic study investigated ambiguity in the translation performance of late bilinguals from English (L2) into Turkish (L1). We employed an oral translation task in which the participants (N= 51) translated 30 ambiguous words, (polysemes and homonyms) in contextualized sentences. First, we investigated whether word frequency affects the participants’ translation accuracy. We found no significant difference between high and low frequency words, which is attributable to the proficiency of the participants, and the facilitating role of sentential context. Secondly, we aimed to explore whether the nature of the ambiguous words made any difference to the participants’ translation performance. The results showed that polysemous words were translated with greater accuracy than homonymous words, in line with the data in the literature regarding the differences in the representation and processing of polysemy and homonymy.

Word-final Coronal Stop Variation across Words : Cases of American and British English

It is well-documented that coronal stops in English are most likely to undergo lenition when appearing in a prosodically weak position. Based on the data in the two corpora, this paper analyzes the patterns of coronal stop realizations across words in American English (AE) and British English (or Received Pronunciation (RP)). Results showed that coronal stops over a word boundary were subject to flapping, glottaling, nasal plosion and deletion. Coronal stops in AE, specifically those in superlative and derivational suffixes, were commonly deleted. Most coronal stops in RP, however, stayed unchanged across words. In addition, coronal stops in AE tended heavily to undergo flapping between vowels, but those in RP did not. The underlying voicing contrast also played a significant role in the variation where voiceless coronal stops often underwent glottaling whereas voiced counterparts did not in both AE and RP. Also, word frequency had an influence on such alternations in the sense that low-frequency words resisted weakening in both dialects.

Continuing to Explore the Multidimensional Nature of Lexical Sophistication: The Case of Oral Proficiency Interviews

AbstractLexical sophistication has been an important indicator of productive lexical proficiency for almost 30 years. Although lexical sophistication has most often been operationalized as the proportion of low frequency words in a text, a growing body of research has indicated that a number of indices such as concreteness, hypernymy, and n‐gram association strengths meaningfully contribute to the construct. While the increase in available indices has expanded our understanding of the multidimensional construct, the sheer number of indices presents a practical barrier for researchers. Although some studies have begun to address this issue, most have been confined to the analysis of argumentative tasks, which are not necessarily representative of the range of tasks learners may encounter. This study therefore investigates the structure of lexical sophistication indices in a large learner corpus of English second language (L2) oral proficiency interviews (OPIs). An exploratory factor analysis identified 10 factors, 7 of which explained approximately 58% of the variance in OPI scores in a follow‐up regression analysis. The results suggest that while some features of lexical sophistication (e.g., concreteness) may be task independent, others (e.g., frequency) may be task specific.

Lexical properties influencing visual word recognition in Hangul

This study examined how lexical properties, such as word frequency, word length, and morphological features, affect the word recognition of Korean Hangul among adult readers. Ninety-four native Korean students performed a lexical decision task on disyllabic and trisyllabic words and nonwords. Results of cross-classified and hierarchical linear modeling showed a significant frequency effect but null effects of word length and their interactions on word recognition. The null syllable effect might be contributable to the block structure of syllables, which does not require syllabic decomposition in recognition. Given that Chinese-derived Sino-Korean words account for about 70% of the Korean lexicon, morphological features embedded in the word were examined in order to further understand the morphological undercurrent of multisyllabic word recognition. Word type (bound-morphemic words vs. compound words), word origin (native or semi-native words vs. Chinese-derived words), and morphemic transparency (opaque morpheme vs. transparent morpheme) were significant predictors of the speed of visual word recognition. An analysis of frequency split showed that compound words and morpheme transparency facilitated word recognition for high frequency words, while the number of morphemes within the word, Korean native and semi-native words, and morphemic transparency facilitated word recognition for low frequency words. These results suggest that high and low frequency words function differently according to morphological information available within the multisyllabic word in visual word recognition in Hangul.

Comparing Medical Term Usage Patterns of Professionals and Search Engine and Community Question Answering Service Users in Japan: Log Analysis.

BackgroundDespite increasing opportunities for acquiring health information online, discussion of the specific words used in searches has been limited.ObjectiveThe aim of this study was to clarify the medical information gap between medical professionals and the general public in Japan through health information–seeking activities on the internet.MethodsSearch and posting data were analyzed from one of the most popular domestic search engines in Japan (Yahoo! JAPAN Search) and the most popular Japanese community question answering service (Yahoo! Chiebukuro). We compared the frequency of 100 clinical words appearing in the clinical case reports of medical professionals (clinical frequency) with their frequency in Yahoo! JAPAN Search (search frequency) logs and questions posted to Yahoo! Chiebukuro (question frequency). The Spearman correlation coefficient was used to quantify association patterns among the three information sources. Additionally, user information (gender and age) in the search frequency associated with each registered user was extracted.ResultsSignificant correlations were observed between clinical and search frequencies (r=0.29, P=.003), clinical and question frequencies (r=0.34, P=.001), and search and question frequencies (r=0.57, P<.001). Low-frequency words in clinical frequency (eg, “hypothyroidism,” “ulcerative colitis”) highly ranked in search frequency. Similarly, “pain,” “slight fever,” and “numbness” were highly ranked only in question frequency. The weighted average of ages was 34.5 (SD 2.7) years, and the weighted average of gender (man –1, woman +1) was 0.1 (SD 0.1) in search frequency. Some words were specifically extracted from the search frequency of certain age groups, including “abdominal pain” (10-20 years), “plasma cells” and “inflammatory findings” (20-30 years), “DM” (diabetes mellitus; 30-40 years), “abnormal shadow” and “inflammatory findings” (40-50 years), “hypertension” and “abnormal shadow” (50-60 years), and “lung cancer” and “gastric cancer” (60-70 years).ConclusionsSearch and question frequencies showed similar tendencies, whereas search and clinical frequencies showed discrepancy. Low-clinical frequency words related to diseases such as “hypothyroidism” and “ulcerative colitis” had high search frequencies, whereas those related to symptoms such as “pain,” “slight fever,” and “numbness” had high question frequencies. Moreover, high search frequency words included designated intractable diseases such as “ulcerative colitis,” which has an incidence of less than 0.1% in the Japanese population. Therefore, it is generally worthwhile to pay attention not only to major diseases but also to minor diseases that users frequently seek information on, and more words will need to be analyzed in the future. Some characteristic words for certain age groups were observed (eg, 20-40 years: “cancer”; 40-60 years: diagnoses and diseases identified in health examinations; 60-70 years: diseases with late adulthood onset and “death”). Overall, this analysis demonstrates that medical professionals as information providers should be aware of clinical frequency, and medical information gaps between professionals and the general public should be bridged.