Contextual Word Learning Research Articles

To sleep or not to sleep? No effect of sleep on contextual word learning in younger adults.

This study investigated the effect of sleep on novel word learning through reading context. Seventy-four healthy young adults attended two testing sessions, with either overnight sleep (sleep group) or daytime wakefulness (wake group) occurring between the sessions. At the initial learning session, participants identified the hidden meanings of novel words embedded within sentence contexts and were subsequently tested on their recognition of the novel word meanings. A recognition test was also conducted at the delayed session. The analyses revealed comparable recognition of novel word meanings for the sleep and wake group at both the initial and the delayed session, indicating that there was no benefit of sleep compared with wakefulness for novel word learning through context. Overall, this study highlights the critical influence of encoding method on sleep-dependent learning, where not all forms of word learning appear to benefit from sleep for consolidation.

Learning Spelling From Meaning.

According to the instance-based approach, each novel word encounter is encoded as an episodic trace, including different aspects of word knowledge (orthography, semantics, phonology) and context. Experiencing the novel word again leads to reactivating the previous instances to support word identification. Accordingly, once a link between orthography and meaning is established through several instances of co-occurrence, presenting the novel word form enhances semantic learning even if the contexts are uninformative about the meaning (Eskenazi et al., 2018). Here, we investigated whether informative contexts enhance orthographic learning in the absence of the novel word form. Participants read pseudowords in three definition-like sentences, followed by three unrelated filler sentences (baseline condition), three uninformative sentences (orthographic condition), or three informative sentences with synonyms replacing the pseudoword (semantic condition). After reading, participants were better at spelling pseudowords exposed in the semantic than in the baseline condition and recalled more definitions of the pseudowords exposed in the orthographic than in the baseline condition. Such results indicate that both semantic and orthographic learning benefit from the contexts where the target information is absent. Overall, this supports the instance-based approach and contributes to the understanding of the interplay between orthography and semantics in contextual word learning.

The effects of emotional context and exposure frequency on L2 contextual word learning

Objectives: An experiment was conducted to explore how emotional valence of contexts and exposure frequency of novel words affect second language (L2) contextual word learning. Methodology: Chinese native speakers who learned English in a formal classroom setting were asked to read English paragraphs with different emotional valence (positive, negative or neutral) across five different days. These paragraphs were embedded with pseudowords. During this learning process, form recognition test and meaning recall test were carried out for these pseudowords. Data and analysis: Data were analyzed using mixed-model ANOVA. Accuracy for each task was compared among the three kinds of emotional contexts. Findings/Conclusions: In the form recognition test, the accuracy in the negative context was higher than in the positive and neutral contexts, and the pseudowords were acquired much earlier. In the meaning recall test, the accuracy in the positive and negative contexts was higher than that in the neutral context. Accuracy increased gradually with the increase of exposure frequency of the pseudowords. More importantly, we found that less exposure times were needed for emotional context relative to neutral context in contextual word learning. Originality: This may be the first study to explore the influence of emotional valence and exposure frequency on L2 contextual word learning. Significance/Implications: This study underlined the importance of emotional information in L2 contextual word learning and contributed to the understanding of how emotional information and exposure frequency functions in this learning process.

Effects of spacing on contextual vocabulary learning: Spacing facilitates the acquisition of explicit, but not tacit, vocabulary knowledge

Studies examining decontextualized associative vocabulary learning have shown that long spacing between encounters with an item facilitates learning more than short or no spacing, a phenomenon known as distributed practice effect. However, the effect of spacing on learning words in context is less researched and the results, so far, are inconsistent. In this study, we compared the effect of massed and spaced distributions on second language vocabulary learning from reading. Japanese speakers of English encountered 48 novel vocabulary items embedded in informative English sentences, inferred their meanings from contexts, and received feedback in the form of English synonyms and Japanese translation equivalents. To test the hypothesis that the effects of spacing might differentially affect the development of explicit or tacit word knowledge, spacing effects were measured using semantic priming as well as a meaning recall and a meaning–form matching posttest. Results showed an advantage of spaced over massed learning on the meaning recall and meaning–form matching posttests. However, a similar semantic priming effect was observed irrespective of whether an item was encountered in the massed or spaced distribution. These results suggest that the spacing effect holds in contextual word learning for the development of explicit vocabulary knowledge, but massing appears to be as effective as spacing for the acquisition of tacit semantic knowledge.

Word learning from context in school-age children: relations with language ability and executive function.

Purpose: Although school-age children learn most new word meanings from surrounding context, the joint roles of language ability and executive function (EF) in the word learning process remain unclear. This study examined children's acquisition of word meanings from context in relation to oral language ability and three EF skills (working memory, inhibitory control, and cognitive flexibility). Method: Typically developing school-age children completed measures of language and EF, then read and listened to short stories containing unfamiliar target words. A multiple-choice pretest-posttest measure assessed children's target word knowledge gains. Results: Regression analyses showed that language and cognitive flexibility were both related to word knowledge gains; each skill assumed greater importance among children with relative weakness in the other skill. Conclusion: Language ability and cognitive flexibility may each play a direct role in contextual word learning among school-age children, with children naturally relying on one skill if the other is weaker.

Comparing the merits of word writing and retrieval practice for L2 vocabulary learning

Previous research has indicated that in the case of contextual word learning, repeatedly writing a word down, i.e. engaging in a structural elaboration activity, results in better knowledge of both word form and word meaning than engaging in a semantic elaboration activity. Focusing on word form and word meaning at the same time may be an even more efficient strategy for acquiring L2 word form and word meaning, and creating form-meaning mappings. Therefore, the present decontextualized word-learning study contrasted word writing with retrieval practice, which prompts the learners to process both the form and meaning of a new L2 item in the same learning activity. 179 native Dutch-speaking EFL-learners acquired fifteen English words in one of three conditions: a word writing condition, a retrieval practice condition and a control condition in which the participants looked at the English-Dutch word pairs. Form and meaning recall tests were administered immediately after the learning procedure and one week later in order to gauge the participants’ knowledge of the target vocabulary. The results indicate that retrieval practice results in better immediate and delayed form recall than both word writing and the control condition.

Effects of Word-Writing in Contextual Word Learning on Korean High School Students’ L2 Vocabulary Learning

Effects of Word-Writing in Contextual Word Learning on Korean High School Students’ L2 Vocabulary Learning

CONTEXTUAL WORD LEARNING IN THE FIRST AND SECOND LANGUAGE

AbstractAccess to definitions facilitates the learning of word meanings when novel words are encountered in reading. However, the memorial costs and benefits of inferring word meanings from context, compared to seeing definitions of unfamiliar words before reading, are not yet well understood. We conducted two experiments with adult L1 (English) and L2 (Chinese) readers to investigate whether the development of declarative and nondeclarative word knowledge benefits more when definitions are supplied before reading (errorless treatment) or after reading (trial-and-error treatment). Study participants encountered 90 target vocabulary items three times in short informative texts under errorless or trial-and-error conditions and entered their meaning inferences immediately after reading each text. Posttreatment, we evaluated participants’ declarative knowledge of the target items using a meaning generation (recall) task and nondeclarative knowledge using a self-paced reading task. The trial-and-error treatment followed by definitions resulted in a superior declarative and nondeclarative knowledge, compared to the errorless treatment, for L1 and L2 readers. Inference errors affected the development of declarative but not nondeclarative knowledge, and the trajectory of the development of nondeclarative knowledge was different for L1 and L2 readers. We interpret these findings in terms of the declarative and nondeclarative memory processes underpinning contextual word learning.

Rapid L2 Word Learning through High Constraint Sentence Context: An Event-Related Potential Study.

Previous studies have found quantity of exposure, i.e., frequency of exposure (Horst et al., 1998; Webb, 2008; Pellicer-Sánchez and Schmitt, 2010), is important for second language (L2) contextual word learning. Besides this factor, context constraint and L2 proficiency level have also been found to affect contextual word learning (Pulido, 2003; Tekmen and Daloglu, 2006; Elgort et al., 2015; Ma et al., 2015). In the present study, we adopted the event-related potential (ERP) technique and chose high constraint sentences as reading materials to further explore the effects of quantity of exposure and proficiency on L2 contextual word learning. Participants were Chinese learners of English with different English proficiency levels. For each novel word, there were four high constraint sentences with the critical word at the end of the sentence. Learners read sentences and made semantic relatedness judgment afterwards, with ERPs recorded. Results showed that in the high constraint condition where each pseudoword was embedded in four sentences with consistent meaning, N400 amplitude upon this pseudoword decreased significantly as learners read the first two sentences. High proficiency learners responded faster in the semantic relatedness judgment task. These results suggest that in high quality sentence contexts, L2 learners could rapidly acquire word meaning without multiple exposures, and L2 proficiency facilitated this learning process.

Incorrect inferences and contextual word learning in English as a second language

When readers encounter new words they may try to infer their meanings from context. Such contextual inferences may be correct or incorrect. This research considered the effect of incorrect meaning inferences on contextual word learning in English as a second language. Chinese speakers encountered 48 novel vocabulary items in informative single-sentence English contexts and were instructed to infer their meanings. They were able to verify their inferences by reviewing dictionary-type definitions at the end of the learning procedure. Participants’ explicit knowledge of the critical vocabulary items was probed using a meaning generation task; their implicit knowledge was examined using a mixed-modality masked repetition priming lexical decision task. The results revealed a differential effect of incorrect inferences on the explicit and implicit knowledge of the vocabulary items. Explicit knowledge of meaning was less accurate after incorrect inferences than after correct inferences, but it was not worse than the knowledge gained when no explicit inference had been made. Implicit knowledge however was not affected by incorrect inferences. Pedagogical and research implications of the study findings are considered.

Help me if I can't: Social interaction effects in adult contextual word learning

A major challenge in second language acquisition is to build up new vocabulary. How is it possible to identify the meaning of a new word among several possible referents? Adult learners typically use contextual information, which reduces the number of possible referents a new word can have. Alternatively, a social partner may facilitate word learning by directing the learner’s attention toward the correct new word meaning. While much is known about the role of this form of ‘joint attention’ in first language acquisition, little is known about its efficacy in second language acquisition. Consequently, we introduce and validate a novel visual word learning game to evaluate how joint attention affects the contextual learning of new words in a second language. Adult learners either acquired new words in a constant or variable sentence context by playing the game with a knowledgeable partner, or by playing the game alone on a computer. Results clearly show that participants who learned new words in social interaction (i) are faster in identifying a correct new word referent in variable sentence contexts, and (ii) temporally coordinate their behavior with a social partner. Testing the learned words in a post-learning recall or recognition task showed that participants, who learned interactively, better recognized words originally learned in a variable context. While this result may suggest that interactive learning facilitates the allocation of attention to a target referent, the differences in the performance during recognition and recall call for further studies investigating the effect of social interaction on learning performance. In summary, we provide first evidence on the role joint attention in second language learning. Furthermore, the new interactive learning game offers itself to further testing in complex neuroimaging research, where the lack of appropriate experimental set-ups has so far limited the investigation of the neural basis of adult word learning in social interaction.

Contextual Word Learning with Form-Focused and Meaning-Focused Elaboration

Contextual L2 word learning may be facilitated by increasing readers’ engagement with form and meaning of novel words. In the present study, two adult L2 populations, Chinese and Dutch speakers, read English sentences that contained novel vocabulary. These contextual exposures were accompanied either by form-focused elaboration (i.e. word-writing) or by meaning-focused elaboration (i.e. actively deriving word meaning from context). Immediate and delayed offline and online measures of word knowledge showed superior learning outcomes for the word-writing treatment. This finding is aligned with the predictions of the lexical quality hypothesis (Perfetti and Hart 2002), highlighting the added value of more precise encoding of a word’s form, in addition to learning its meaning. The key pedagogical implication of this study is that a simple act of copying novel words, while processing meaningful L2 input, may significantly boost quality of lexical knowledge.

Accuracy feedback improves word learning from context: evidence from a meaning-generation task

The present study asked whether accuracy feedback on a meaning generation task would lead to improved contextual word learning (CWL). Active generation can facilitate learning by increasing task engagement and memory retrieval, which strengthens new word representations. However, forced generation results in increased errors, which can be detrimental for learning if they are not corrected. The goal of this study was to determine whether immediate feedback on response accuracy would ameliorate this risk. The study was conducted using an intelligent tutoring system, which presents target words in multiple contexts and prompts users to generate a target word meaning after each context. One group of participants (feedback group) received immediate feedback based on Markov Estimation of Semantic Association (MESA), which estimates the distance between the learner response and the target word meaning. The control group did not receive feedback. Results from conventional (pre/post-test) measures showed greater gains in accuracy and confidence for the feedback group. Moreover, when contextual support was decreased mid-way through the training (from trial 3 to trial 4), MESA measures showed a corresponding drop in accuracy, but only for the No-Feedback group. These findings suggest that accuracy feedback can improve outcomes in CWL, particularly when there is an increased risk of errors. This strengthens the case for meaning generation as a tool to build high-quality lexical representations.

Contextual learning of L2 word meanings: second language proficiency modulates behavioural and event-related brain potential (ERP) indicators of learning

New word learning occurs incidentally through exposure to language. Hypothesising that effectiveness of contextual word learning in a second language (L2) depends on the quality of existing lexical semantic knowledge, we tested more and less proficient adult bilinguals in an incidental word learning task. One day after being exposed to rare words in an L2 (English) reading task, the bilinguals read sentences with the newly learned words in the sentence-final position, followed by related or unrelated meaning probes. Both proficiency groups showed some learning through faster responses on related trials and a frontal N400 effect observed during probe word reading. However, word learning was more robust for the higher proficiency group, who showed a larger semantic relatedness effect in unfamiliar contexts and a canonical N400 (central–parietal). The results suggest that the ability to learn the meanings of new words from a context depends on the L2 lexical semantic knowledge of the reader.

Learning to use words: Event-related potentials index single-shot contextual word learning

Humans have the remarkable capacity to learn words from a single instance. The goal of this study was to examine the impact of initial learning context on the understanding of novel word usage using event-related brain potentials. Participants saw known and unknown words in strongly or weakly constraining sentence contexts. After each sentence context, word usage knowledge was assessed via plausibility ratings of these words as the objects of transitive verbs. Plausibility effects were observed in the N400 component to the verb only when the upcoming novel word object had initially appeared in a strongly constraining context. These results demonstrate that rapid word learning is modulated by contextual constraint and reveal a rapid mental process that is sensitive to novel word usage.

Watching the Brain during Meaning Acquisition

Acquiring the meaning of a new word in a foreign language can be achieved either by rote memorizing or, similar to meaning acquisition during infancy, by extracting it from context. Little is known about the brain mechanisms involved in word learning. Here we demonstrate, using event-related brain potentials, the rapid development of a brain signature related to lexical and semantic processing during contextual word learning. Healthy volunteers engaged in a simple word-learning task were required to discover the meaning of a novel word from a context during silent reading. After 3 exposures, brain potentials to novel words in meaningful contexts were indistinguishable from real words, although this acquisition effect was not observed for novel words, for which sentence contexts allowed no meaning derivation. Furthermore, when the learned novel words were presented in isolation, an activation of their corresponding meaning was observed, although this process was slower than for real words.