Orthographic Input Research Articles

Second language phonology at the interface between acoustic and orthographic input

Recently researchers have become increasingly interested in the influence of orthographic forms on second language (L2) phonology. Orthographic forms (or spellings) represent the sounds and words of a language in writing. L2 learners, in particular those in instructed settings, are simultaneously exposed to the orthographic forms and the phonological forms of the target language. Recent investigations have indicated that orthographic input can affect learners’ phonological development and word learning in their second language in various ways. The availability of L2 orthographic forms in the input to L2 learners can facilitate speech production, perception, and/or word form learning (Escudero, Hayes-Harb, & Mitterer, 2008; Showalter & Hayes-Harb, 2013). It can hinder targetlike acquisition (Bassetti, 2007; Hayes-Harb, Nicol, & Barker, 2010), or it can have mixed effects or no effect at all (Escudero & Wanrooij, 2010; Simon, Chamblessb, & Alvesc, 2010).

The interaction of acoustic and orthographic input in the acquisition of Spanish assibilated/fricative rhotics

ABSTRACTThere is growing evidence that exposure to orthographic input affects second language phonological acquisition. This study examined the effects of auditory–orthographic interactions on second language assibilated/fricative rhotic productions of 20 naive English speakers of Spanish, with an acoustic–phonetic approach. The participants were assigned to two groups: auditory-only and auditory–orthographic. The results were indicative of a higher rate of both assibilated/fricative rhotics and approximant rhotics in the auditory–orthographic group. In addition, there was evidence that the acoustic input modulated the orthographic effects. However, the auditory-only group produced a higher rate of postalveolar sibilants. These results will be discussed in terms of (a) the salience-enhancing effect of the grapheme <r> and (b) the overriding effect of orthography.

Native English speakers learning Arabic: The influence of novel orthographic information on second language phonological acquisition

ABSTRACTRecent research has indicated that learners exposed to second language words’ orthographic forms of words can often use this information to make inferences about the words’ phonological forms. Here we asked, do learners benefit even when the orthography is unfamiliar? We taught native English speakers minimal nonword pairs differentiated by the Arabic velar–uvular contrast (e.g., [kubu], [qubu]) and manipulated the quality of orthographic input. We found that participants were consistently unable to associate the novel phonemes with novel words. Results are discussed in terms of (a) the role of orthographic input in second language word form learning, (b) the influence of orthographic familiarity in moderating the role of orthographic input, and (c) the issue of talker variability in word learning.

The Influence of Written Stress Marks on Native English Speakers’ Acquisition of Russian Lexical Stress Contrasts

Recent studies have provided evidence for a beneficial effect of orthographic input on the acquisition of second language phonological contrasts. In particular, the presentation of orthographic contrasts has been shown to improve L2 learners’ ability to differentiate newly learned words containing difficult auditory contrasts—for example, the letters ‘a’ and ‘e’ can help native Dutch speakers differentiate newly learned English words containing /æ/ and /ɛ/ (Escudero, Hayes-Harb and Mitterer). In the present research, we explored whether the diacritic marks typically used to indicate lexical stress in Russian pedagogical texts are similarly helpful to second language learners. We taught native English speakers with varying amounts of Russian language experience a set of Russian non-words containing lexical stress minimal pairs. In different word-learning conditions, we manipulated the presence of stress marks in the input to participants, and later tested participants on their ability to distinguish the newly learned lexical stress minimal pairs. We found no effect from the availability of stress marks for our participants, whose Russian language experience ranged from subjects with no exposure to Russian to students enrolled in third-year college-level Russian language courses. We conclude by discussing crucial differences between the learning conditions in the present study and real-world Russian language acquisition, and calling for future research that investigates the effect of lexical stress marks in more authentic learning conditions.

The role of orthographic input in second language German: Evidence from naturalistic adult learners’ production

ABSTRACTA yearlong study of the acquisition of German by three American secondary school students reveals influence of orthographic input on their segmental development in phonology. The three had not been exposed to German prior to the year they spent in Germany, they received little explicit instruction on German, and they were the only native English speakers in their communities. Examination of their production of word-initial <s>, which is realized as [z] in German but [s] in English, points to influence of the orthographic input they received while interacting with written text as fully matriculated students in German secondary schools. Despite considerable aural input from their standard German-speaking peers, teachers, and host family members over the 12 months of their stay in Germany, the three learners’ production of word-initial <s> was typically [s]. Finer-grained analysis using Praat shows variation in voicing, suggesting these learners were also responding to the aural input.

Vocabulary acquisition in aphasia: Modality can matter.

The present case study investigated modality-specific aspects of novel word acquisition in aphasia. It was prompted by recent aphasia case studies indicating great interindividual variability in the ability to learn and maintain novel words in aphasia. Moreover, two previous case studies revealed a striking effect of input modality by showing effective word learning and re-learning via visual input only (Kohen, Sola, Tuomiranta, Laine, & Martin, 2012; Tuomiranta et al., 2014). The present participant TS with chronic nonfluent aphasia and post-semantic anomia was administered novel word-referent learning tasks. In the first experiment, the learning phase included simultaneous phonological and orthographic input, while the follow-up was probed separately for spoken and written responses. In the second experiment, we studied the effect of four different input and output modality combinations on her ability to learn to name the novel items. In the first experiment, TS's spoken naming performance during the learning phase was just within the range of healthy controls. Maintenance declined and remained outside that range during the whole 6-month follow-up. However, TS maintained the learned words better in written than in spoken naming throughout the follow-up, and in written naming, her maintenance stayed within the control's range up to 8 weeks post-training. The second experiment indicated that the best learning outcome was achieved with orthographic input. Orthographic input combined with orthographic output resulted in fast and accurate learning of the novel words. Interestingly, TS's test profile was opposite to her learning profile, as she repeated better than she read aloud in the linguistic background assessment. The results from the present case highlight the importance of multiple learning channels for word acquisition in individuals with aphasia. Probing the functionality of different input and output channels for learning may also prove valuable in tailoring effective treatment for persons with aphasia.

Multi-voxel pattern analysis of noun and verb differences in ventral temporal cortex

Recent evidence suggests a probabilistic relationship exists between the phonological/orthographic form of a word and its lexical-syntactic category (specifically nouns vs. verbs) such that syntactic prediction may elicit form-based estimates in sensory cortex. We tested this hypothesis by conducting multi-voxel pattern analysis (MVPA) of fMRI data from early visual cortex (EVC), left ventral temporal (VT) cortex, and a subregion of the latter – the left mid fusiform gyrus (mid FG), sometimes called the “visual word form area.” Crucially, we examined only those volumes sampled when subjects were predicting, but not viewing, nouns and verbs. This allowed us to investigate prediction effects in visual areas without any bottom-up orthographic input. We found that voxels in VT and mid FG, but not in EVC, were able to classify noun-predictive trials vs. verb-predictive trials in sentence contexts, suggesting that sentence-level predictions are sufficient to generate word form-based estimates in visual areas.

The locus of impairment in English developmental letter position dyslexia.

Many children with reading difficulties display phonological deficits and struggle to acquire non-lexical reading skills. However, not all children with reading difficulties have these problems, such as children with selective letter position dyslexia (LPD), who make excessive migration errors (such as reading slime as “smile”). Previous research has explored three possible loci for the deficit – the phonological output buffer, the orthographic input lexicon, and the orthographic-visual analysis stage of reading. While there is compelling evidence against a phonological output buffer and orthographic input lexicon deficit account of English LPD, the evidence in support of an orthographic-visual analysis deficit is currently limited. In this multiple single-case study with three English-speaking children with developmental LPD, we aimed to both replicate and extend previous findings regarding the locus of impairment in English LPD. First, we ruled out a phonological output buffer and an orthographic input lexicon deficit by administering tasks that directly assess phonological processing and lexical guessing. We then went on to directly assess whether or not children with LPD have an orthographic-visual analysis deficit by modifying two tasks that have previously been used to localize processing at this level: a same-different decision task and a non-word reading task. The results from these tasks indicate that LPD is most likely caused by a deficit specific to the coding of letter positions at the orthographic-visual analysis stage of reading. These findings provide further evidence for the heterogeneity of dyslexia and its underlying causes.

Age-related differences in effective connectivity of brain regions involved in Japanese kanji processing with homophone judgment task

Reading is a complex process involving neural networks in which connections may be influenced by task demands and other factors. We employed functional magnetic resonance imaging and dynamic causal modeling to examine age-related influences on left-hemispheric kanji reading networks. During a homophone judgment task, activation in the middle frontal gyrus, and dorsal and ventral inferior frontal gyri were identified, representing areas involved in orthographic, phonological, and semantic processing, respectively. The young adults showed a preference for a semantically-mediated pathway from orthographic inputs to the retrieval of phonological representations, whereas the elderly preferred a direct connection from orthographic inputs to phonological lexicons prior to the activation of semantic representations. These sequential pathways are in line with the lexical semantic and non-semantic routes in the dual-route cascaded model. The shift in reading pathways accompanied by slowed reaction time for the elderly might suggest age-related declines in the efficiency of network connectivity.

A behavioral database for masked form priming

Reading involves a process of matching an orthographic input with stored representations in lexical memory. The masked priming paradigm has become a standard tool for investigating this process. Use of existing results from this paradigm can be limited by the precision of the data and the need for cross-experiment comparisons that lack normal experimental controls. Here, we present a single, large, high-precision, multicondition experiment to address these problems. Over 1,000 participants from 14 sites responded to 840 trials involving 28 different types of orthographically related primes (e.g., castfe-CASTLE) in a lexical decision task, as well as completing measures of spelling and vocabulary. The data were indeed highly sensitive to differences between conditions: After correction for multiple comparisons, prime type condition differences of 2.90 ms and above reached significance at the 5% level. This article presents the method of data collection and preliminary findings from these data, which included replications of the most widely agreed-upon differences between prime types, further evidence for systematic individual differences in susceptibility to priming, and new evidence regarding lexical properties associated with a target word's susceptibility to priming. These analyses will form a basis for the use of these data in quantitative model fitting and evaluation and for future exploration of these data that will inform and motivate new experiments.

Error-related negativities during spelling judgments expose orthographic knowledge

In two experiments, we demonstrate that error-related negativities (ERNs) recorded during spelling decisions can expose individual differences in lexical knowledge. The first experiment found that the ERN was elicited during spelling decisions and that its magnitude was correlated with independent measures of subjects' spelling knowledge. In the second experiment, we manipulated the phonology of misspelled stimuli and observed that ERN magnitudes were larger when misspelled words altered the phonology of their correctly spelled counterparts than when they preserved it. Thus, when an error is made in a decision about spelling, the brain processes indexed by the ERN reflect both phonological and orthographic input to the decision process. In both experiments, ERN effect sizes were correlated with assessments of lexical knowledge and reading, including offline spelling ability and spelling-mediated vocabulary knowledge. These results affirm the interdependent nature of orthographic, semantic, and phonological knowledge components while showing that spelling knowledge uniquely influences the ERN during spelling decisions. Finally, the study demonstrates the value of ERNs in exposing individual differences in lexical knowledge.

Lexical and Phonological Processes in Dyslexic Readers: Evidence from a Visual Lexical Decision Task

The aim of the present study was to investigate whether reading failure in the context of an orthography of intermediate consistency is linked to inefficient use of the lexical orthographic reading procedure. The performance of typically developing and dyslexic Portuguese-speaking children was examined in a lexical decision task, where the stimulus lexicality, word frequency and length were manipulated. Both lexicality and length effects were larger in the dyslexic group than in controls, although the interaction between group and frequency disappeared when the data were transformed to control for general performance factors. Children with dyslexia were influenced in lexical decision making by the stimulus length of words and pseudowords, whereas age-matched controls were influenced by the length of pseudowords only. These findings suggest that non-impaired readers rely mainly on lexical orthographic information, but children with dyslexia preferentially use the phonological decoding procedure--albeit poorly--most likely because they struggle to process orthographic inputs as a whole such as controls do. Accordingly, dyslexic children showed significantly poorer performance than controls for all types of stimuli, including words that could be considered over-learned, such as high-frequency words. This suggests that their orthographic lexical entries are less established in the orthographic lexicon.

Sidestepping the Combinatorial Explosion: An Explanation of n-gram Frequency Effects Based on Naive Discriminative Learning

Arnon and Snider ((2010). More than words: Frequency effects for multi-word phrases. Journal of memory and language, 62, 67-82) documented frequency effects for compositional four-grams independently of the frequencies of lower-order n-grams. They argue that comprehenders apparently store frequency information about multi-word units. We show that n-gram frequency effects can emerge in a parameter-free computational model driven by naive discriminative learning, trained on a sample of 300,000 four-word phrases from the British National Corpus. The discriminative learning model is a full decomposition model, associating orthographic input features straightforwardly with meanings. The model does not make use of separate representations for derived or inflected words, nor for compounds, nor for phrases. Nevertheless, frequency effects are correctly predicted for all these linguistic units. Naive discriminative learning provides the simplest and most economical explanation for frequency effects in language processing, obviating the need to posit counters in the head for, and the existence of, hundreds of millions of n-gram representations.

A functional deficit in the sensorimotor interface component as revealed by oral reading in Thai conduction aphasia

The contemporary view is that a disruption in phonological encoding underlies the speech production deficit in conduction aphasia. We therefore expect to observe a commonality in phonological errors regardless of task - speaking, reading, or writing. A case report is presented of an oral reading task performed by a Thai conduction aphasic with evidence of localized damage in the left temporoparietal zone. He was instructed to read aloud selections from elementary school materials printed in Thai script at his own pace. A phonological analysis of substitution errors revealed that syllable-initial consonants were more vulnerable to disruption than vowels or tones. Tonal errors were seen to be a secondary consequence of a substitution error involving the syllable-initial consonant. His impaired performance is interpreted as evidence in support of a sensorimotor interface system that converts phonological representations derived from visual orthographic input into articulatory motor representations for speech output.

Developing a universal model of reading necessitates cracking the orthographic code

I argue, contra Frost, that when prime lexicality and target density are considered, it is not clear that there are fundamental differences between form priming effects in Semitic and European languages. Furthermore, identifying and naming printed words in these languages raises common theoretical problems. Solving these problems and developing a universal model of reading necessitates "cracking" the orthographic input code.

Individual Differences in the Acquisition of a Complex L2 Phonology: A Training Study

Many learners of a foreign language (L2) struggle to correctly pronounce newly learned speech sounds, yet many others achieve this with apparent ease. Here we explored how a training study of learning complex consonant clusters at the very onset of L2 acquisition can inform us about L2 learning in general and individual differences in particular. To this end, adult Dutch native speakers were trained on Slovak words with complex consonant clusters (e.g., pstruh/pstrux/“trout”, štvrt'/ʃtvrc/“quarter”) using auditory and orthographic input. In the same session following training, participants were tested on a battery of L2 perception and production tasks. The battery of L2 tests was repeated twice more with 1 week between sessions. In the first session, an additional battery of control tests was used to test participants’ native language (L1) skills. Overall, in line with some previous research, participants showed only weak learning effects across the L2 perception tasks. However, there were considerable individual differences across all L2 tasks, which remained stable across sessions. Only two participants showed overall high L2 production performance that fell within 2 standard deviations of the mean ratings obtained for an L1 speaker. The mispronunciation detection task was the only perception task which significantly predicted production performance in the final session. We conclude by discussing several recommendations for future L2 learning studies.

When ‘slime’ becomes ‘smile’: Developmental letter position dyslexia in English

We report the first three cases of selective developmental letter position dyslexia in English. Although the parents and teachers of the children were concerned about these children's reading, standard tests did not reveal their deficit. It was only when the appropriate target words were presented, in this case, migratable words, that their letter position dyslexia was detected. Whereas previous research has described cases with acquired and developmental forms of letter position dyslexia in Hebrew and Arabic readers, this is the first report of this type of reading disorder in English. The cardinal symptom of letter position dyslexia is the migration of letters within the word (reading slime as ‘smile’; pirates as ‘parties’). These migration errors occur in reading aloud as well as in tasks of silent reading. This study provides further evidence that migration errors emerge at the level of early visual-orthographic analysis, in the letter position encoding function. Alternative explanations for the occurrence of migration errors such as poor phonological processing or a deficit in the orthographic input lexicon are ruled out.

Poster #171 IS ALOUD ALLOWED? DIFFERENTIALLY IMPAIRED MEANING ATTRIBUTION IN SCHIZOPHRENIA

Individuals with surface dyslexia read via grapheme-to-phoneme conversion due to a deficit in the lexical route. A deficit in the lexical route can be caused by impairments at several different loci. In the current study we identify three subtypes of developmental surface dyslexia, each caused by impairment at a different locus on the lexical route, and each showing a different pattern of performance in various tasks. All three subtypes show the classical pattern of reading aloud, with regularizations and difficulty in reading words that have more than a single possible conversion to a phoneme string, but they differ in their performance in lexical decision and homophone comprehension. The first subtype, input surface dyslexia, results from a deficit to the orthographic input lexicon, and entails poor performance in lexical decision and comprehension tasks. The second subtype, orthographic lexicon output surface dyslexia, in which the orthographic input lexicon is accessible but its output to the phonological output lexicon and to the semantic system is impaired, allows normal lexical decision, but causes impaired comprehension of homophones. The third subtype, interlexical surface dyslexia, caused by a selective deficit in the connection between the orthographic input lexicon and the phonological output lexicon but with intact access from the orthographic input lexicon to the semantic system, allows normal performance in lexical decision and comprehension tasks. Seventeen Hebrew-speaking individuals with developmental surface dyslexia aged 10–43 participated in the study, eight of them showed the first pattern, three showed the second pattern, and six displayed the third pattern. Another result of the study pertains to the importance of the lexicality of the result of grapheme-to-phoneme conversion for each target word. Some words, when read via grapheme-to-phoneme conversion, can potentially be read as other words (such as “now” in English, which can be sounded as the word “know”), we term these words potentiophones. The results indicate that potentiophones yield the highest error rate in reading aloud for all the participants with surface dyslexia.

Word frequency effects in the left IFG in dyslexic and normally reading children during picture naming and reading

Word frequency effects have been reported in numerous neuroimaging studies with typically reading adults, emphasising the role of the left inferior frontal gyrus (LIFG). Within LIFG, different cytoarchitectonic modules (areas 44 and 45) have been related to phonological vs. lexico-semantic processing, respectively. This fMRI study investigated the differential impact of word frequency on LIFG activation in reading and picture naming in primary school children with and without developmental dyslexia. All children showed the typical LIFG frequency effect in both tasks. The effect was comparable in a fronto-orbital region anterior-inferior adjacent to area 45. During reading but not picture naming, a second effect was observed in area 44. Here, the fMRI effect for lexical frequency was stronger for the dyslexic than the normal readers. These findings demonstrate the neural underpinnings of a selective deficit in dyslexic children in the graphemic input lexicon, whereas abstract lexical representations appear to be processed equally well in dyslexic and normally reading children. To conclude, the present fMRI study demonstrated differential impact of word frequency on LIFG activation in primary school children during reading but not picture naming. Apart from extending previous knowledge from studies with adults to childhood, the study sheds further light on a potential neural mechanism for deficient grapheme-to-phoneme conversion in dyslexic children.

Single or dual orthographic representations for reading and spelling? A study of Italian dyslexic–dysgraphic and normal children

Italian children with surface dyslexia and dysgraphia show defective orthographic lexical processing in both reading and spelling. It is unclear whether this parallelism is due to impairment of separate orthographic input and output lexicons or to a unique defective lexicon. The main aim of the present study was to compare the single- versus dual-lexicon accounts in dyslexic/dysgraphic children (and in normal but younger children). In the first experiment, 9 Italian children with surface dyslexia and dysgraphia judged the orthographic correctness (input lexicon) of their phonologically plausible misspellings (output lexicon) and of phonologically plausible spellings experimentally introduced for words they consistently spelt correctly. The children were generally impaired in recognizing phonologically plausible misspellings. Parallel deficits in reading and spelling also emerged: Children were more impaired in judging items they consistently misspelt and more accurate in judging items they always spelt correctly. In a second experiment, younger normal children with reading/spelling ability similar to that of the dyslexic/dysgraphic children in the first experiment (but younger) were examined. The results confirmed a close parallelism between the orthographic lexical representations used for reading and spelling. Overall, findings support the hypothesis that a single orthographic lexicon is responsible for reading and spelling performance in both dyslexic/dysgraphic and normal (but younger) children.