Phonological Similarity Research Articles

Developmental delays in phonological recoding among children and adolescents with Down syndrome and Williams syndrome

This study examined the development of phonological recoding in short-term memory (STM) span tasks among two clinical groups with contrasting STM and language profiles: those with Down syndrome (DS) and Williams syndrome (WS). Phonological recoding was assessed by comparing: (1) performance on phonologically similar and dissimilar items (phonological similarity effects, PSE); and (2) items with short and long names (word length effects, WLE). Participant groups included children and adolescents with DS (n=29), WS (n=25) and typical development (n=51), all with average mental ages around 6 years. The group with WS, contrary to predictions based on their relatively strong verbal STM and language abilities, showed no evidence for phonological recoding. Those in the group with DS, with weaker verbal STM and language abilities, showed positive evidence for phonological recoding (PSE), but to a lesser degree than the typical group (who showed PSE and WLE). These findings provide new information about the memory systems of these groups of children and adolescents, and suggest that STM processes involving phonological recoding do not fit with the usual expectations of the abilities of children and adolescents with WS and DS.

The ‘when’ and ‘where’ of semantic coding in the anterior temporal lobe: Temporal representational similarity analysis of electrocorticogram data

Electrocorticograms (ECoG) provide a unique opportunity to monitor neural activity directly at the cortical surface. Ten patients with subdural electrodes covering ventral and lateral anterior temporal regions (ATL) performed a picture naming task. Temporal representational similarity analysis (RSA) was used, for the first time, to compare spatio-temporal neural patterns from the ATL surface with pre-defined theoretical models. The results indicate that the neural activity in the ventral subregion of the ATL codes semantic representations from 250 msec after picture onset. The observed activation similarity was not related to the visual similarity of the pictures or the phonological similarity of their names. In keeping with convergent evidence for the importance of the ATL in semantic processing, these results provide the first direct evidence of semantic coding from the surface of the ventral ATL and its time-course.

Interpreting potential markers of storage and rehearsal: Implications for studies of verbal short-term memory and neuropsychological cases.

Neuropsychological studies of verbal short-term memory have often focused on two signature effects - phonological similarity and word length - the absence of which has been taken to indicate problems in phonological storage and rehearsal respectively. In the present study we present a possible alternative reading of such data, namely that the absence of these effects can follow as a consequence of an individual's poor level of recall. Data from a large normative sample of 251 adult participants were re-analyzed under the assumption that the size of phonological similarity and word length effects are proportional to an individual's overall level of recall. For both manipulations, when proportionalized effects were plotted against memory span, the same function fit the data in both auditory and visual presentation conditions. Furthermore, two additional sets of single-case data were broadly comparable to those that would be expected for an individual's level of verbal short-term memory performance albeit with some variation across tasks. These findings indicate that the absolute magnitude of phonological similarity and word length effects depends on overall levels of recall, and that these effects are necessarily eliminated at low levels of verbal short-term memory performance. This has implications for how one interprets any variation in the size of these effects, and raises serious questions about the causal direction of any relationship between impaired verbal short-term memory and the absence of phonological similarity or word length effects.

Phonological interference effects during silent reading of L2 sentences by Korean learners of English

The present study investigated the role of phonological representations during silent reading of L2 sentences by Korean learners of English in comparison with the effect of pragmatic plausibility thereof. Eighteen Korean college students of English participated in two self-paced reading experiments. In Experiment 1, the participants read sentences containing object-extracted relative clauses for which pragmatic plausibility was manipulated (e.g. The thief/policeman that the policeman/thief arrested was known ...). The result showed that increased processing difficulty for implausible propositions occurred at and after the relative clause verb (e.g. arrested). In Experiment 2, the same participants read sentences of similar structure, in which the phonological similarity between the main and relative clause subjects was manipulated (e.g. The runner/baker that the banker always feared bought ...). The result showed that increased processing difficulty due to phonological overlap occurred at the relative clause subject (e.g., banker). The results are discussed in terms of L2 learners` use of phonological representations in silent L2 reading.

Similarités prosodiques entre langues romanes

The Autosegmental-Metric theory, the dominant one in the past decades, defines the prosodic structure of a statement as a non-recursive hierarchical organization (or partly recursive). I propose here to address the prosodic description of the Romance languages in a different theoretical perspective, allowing among other things to show the phonological similarity between different systems including the French one, often presented as the ugly duckling in the Romance group because of the absence of lexical accent in that language

Dimensions of similarity in the mental lexicon

ABSTRACTDuring language production planning, multiple candidate representations are implicitly activated prior to articulation. Lexical representations that are phonologically related to the target (phonological neighbours) are known to influence phonetic properties of the target word. However, the question of which dimensions of phonological similarity contribute to such lexical-phonetic effects remains unanswered. In the present study, we reanalyse phonetic data from a previous study, examining the contrasting predictions of different definitions of phonological similarity. Our results suggest that similarity at the level of position-specific phonological segments best predicts the influence of neighbour activation on phonetic properties of initial consonants.

Characterising receptive language processing in schizophrenia using word and sentence tasks

ABSTRACTIntroduction. Language dysfunction is proposed to relate to the speech disturbances in schizophrenia, which are more commonly referred to as formal thought disorder (FTD). Presently, language production deficits in schizophrenia are better characterised than language comprehension difficulties. This study thus aimed to examine three aspects of language comprehension in schizophrenia: (1) the role of lexical processing, (2) meaning attribution for words and sentences, and (3) the relationship between comprehension and production.Methods. Fifty-seven schizophrenia/schizoaffective disorder patients and 48 healthy controls completed a clinical assessment and three language tasks assessing word recognition, synonym identification, and sentence comprehension. Poorer patient performance was expected on the latter two tasks.Results. Recognition of word form was not impaired in schizophrenia, indicating intact lexical processing. Whereas single-word synonym identification was not significantly impaired, there was a tendency to attribute word meanings based on phonological similarity with increasing FTD severity. Importantly, there was a significant sentence comprehension deficit for processing deep structure, which correlated with FTD severity.Conclusions. These findings established a receptive language deficit in schizophrenia at the syntactic level. There was also evidence for a relationship between some aspects of language comprehension and speech production/FTD. Apart from indicating language as another mechanism in FTD aetiology, the data also suggest that remediating language comprehension problems may be an avenue to pursue in alleviating FTD symptomatology.

Phonological constraints restricting the consonantal distribution in Turkish mimetic words

This paper proposes the following three constraints which restrict the consonantal distribution in Turkish mimetic words: (i) Coronal constraint (domain: base): alveolars must not precede palatals; (ii) Agree-[voice]/obs (domain: base): if C1 and C2 are obstruents, their feature [voice] must agree; (iii) *D]σ: voiced obstruents with the feature [-continuant] must not appear in coda positions. Furthermore, the paper indicates the following two things: (i) Coronal constraint and *D]σ relate to the markedness of consonants, and Agree-[voice]/obs relates to the assimilation of consonants; (ii) there are phonological similarities and differences between Turkish mimetic and non-mimetic words in terms of whether or not the constraints above hold.

On the cognitive basis of contact-induced sound change: Vowel merger reversal in Shanghainese

This study investigates the source and status of a recent sound change in Shanghainese (Wu, Sinitic) that has been attributed to language contact with Mandarin. The change involves two vowels, /e/ and /ɛ/, reported to be merged three decades ago but produced distinctly in contemporary Shanghainese. Results of two production experiments show that speaker age, language mode (monolingual Shanghainese vs. bilingual Shanghainese-Mandarin), and crosslinguistic phonological similarity all influence the production of these vowels. These findings provide evidence for language contact as a linguistic means of merger reversal and are consistent with the view that contact phenomena originate from cross-language interaction within the bilingual mind.

Recalling visual serial order for verbal sequences.

We report three experiments in which participants performed written serial recall of visually presented verbal sequences with items varying in visual similarity. In Experiments 1 and 2 native speakers of Japanese recalled visually presented Japanese Kanji characters. In Experiment 3, native speakers of English recalled visually presented words. In all experiments, items varied in visual similarity and were controlled for phonological similarity. For Kanji and for English, performance on lists comprising visually similar items was overall poorer than for lists of visually distinct items across all serial positions. For mixed lists in which visually similar and visually distinct items alternated through the list, a clear “zig-zag” pattern appeared with better recall of the visually distinct items than for visually similar items. This is the first time that this zig-zag pattern has been shown for manipulations of visual similarity in serial-ordered recall. These data provide new evidence that retaining a sequence of visual codes relies on similar principles to those that govern the retention of a sequence of phonological codes. We further illustrate this by demonstrating that the data patterns can be readily simulated by at least one computational model of serial-ordered recall, the Primacy model (Page and Norris, Psychological Review, 105(4), 761–81, 1998). Together with previous evidence from neuropsychological studies and experimental studies with healthy adults, these results are interpreted as consistent with two domain-specific, limited-capacity, temporary memory systems for phonological material and for visual material, respectively, each of which uses similar processes that have evolved to be optimal for retention of serial order.

Breaking Down the Bilingual Cost in Speech Production.

Bilinguals have been shown to perform worse than monolinguals in a variety of verbal tasks. This study investigated this bilingual verbal cost in a large-scale picture-naming study conducted in Spanish. We explored how individual characteristics of the participants and the linguistic properties of the words being spoken influence this performance cost. In particular, we focused on the contributions of lexical frequency and phonological similarity across translations. The naming performance of Spanish-Catalan bilinguals speaking in their dominant and non-dominant language was compared to that of Spanish monolinguals. Single trial naming latencies were analyzed by means of linear mixed models accounting for individual effects at the participant and item level. While decreasing lexical frequency was shown to increase naming latencies in all groups, this variable by itself did not account for the bilingual cost. In turn, our results showed that the bilingual cost disappeared when naming words with high phonological similarity across translations. In short, our results show that frequency of use can play a role in the emergence of the bilingual cost, but that phonological similarity across translations should be regarded as one of the most important variables that determine the bilingual cost in speech production. Low phonological similarity across translations yields worse performance in bilinguals and promotes the bilingual cost in naming performance. The implications of our results for the effect of phonological similarity across translations within the bilingual speech production system are discussed.

The effects of phonological similarity on the semantic categorisation of pictorial and lexical stimuli: evidence from continuous behavioural measures

ABSTRACTBehavioural and neuroimaging studies provide evidence of automatic activation of phonology (e.g., covert speech) during the recognition of lexical stimuli. Implicit processing of phonological information was investigated in a kinematic study of semantic categorisation of pictures (session A) or words (session B). Participants clicked one of two items (target and distractor) based on their semantic congruency (artefact or natural) with a cued-word. Phonological similarity between cued-word and distractor was varied. The presence of the phonological distractor produced trajectories with greater curvature towards the competing semantic category than did the presence of a distractor not phonologically related. This suggests that the semantic categorisation of pictorial and lexical stimuli is influenced by the automatic activation of phonological information. Trajectories’ curvature reveals competition between partially activated phonological and semantic representations suggesting that phonological codes involved in linguistic processing influence the dynamic competition underlying the semantic categorisation of lexical and pictorial.

Verbal Short-Term Memory Deficits in Chinese Children with Dyslexia may not be a Problem with the Activation of Phonological Representations.

This study explored the underlying mechanism of the verbal short-term memory deficit in Chinese children with developmental dyslexia. Twenty-four children with dyslexia and 28 age-matched normal readers participated in the study. They were required to memorize a visually presented series of six Chinese characters and identify them from a list also including code-specific distracters and non-code-specific distracters. Error rates were recorded and were higher for code-specific distracters in all three conditions, revealing phonological, visual, and semantic similarity effects respectively. Group comparisons showed a stronger phonological similarity effect in dyslexic group, suggesting intact activation of phonological representations of target characters. Children with dyslexia also exhibited a greater semantic similarity effect, revealing stronger activation of semantic representations, while visual similarity effects were equivalent to controls. These results suggest that the verbal short-term memory deficit in Chinese dyslexics might not stem from insufficient activation of phonological information. Based the semantic activation of target characters in dyslexics is greater than in controls, it is possible that the memory deficit of dyslexia is related with deficient inhibition of target semantic representations in short-term memory.

Similarities between the target and the intruder in naturally occurring repeated person naming errors.

The present study investigated an intriguing phenomenon that did not receive much attention so far: repeatedly calling a familiar person with someone else’s name. From participants’ responses to a questionnaire, these repeated naming errors were characterized with respect to a number of properties (e.g., type of names being substituted, error frequency, error longevity) and different features of similarity (e.g., age, gender, type of relationship with the participant, face resemblance and similarity of the contexts of encounter) between the bearer of the target name and the bearer of the wrong name. Moreover, it was evaluated whether the phonological similarity between names, the participants’ age, the difference of age between the two persons whose names were substituted, and face resemblance between the two persons predicted the frequency of error. Regression analyses indicated that phonological similarity between the target name and the wrong name predicted the frequency of repeated person naming errors. The age of the participant was also a significant predictor of error frequency: the older the participant the higher the frequency of errors. Consistent with previous research stressing the importance of the age of acquisition of words on lexical access in speech production, results indicated that bearer of the wrong name was on average known for longer than the bearer of the target name.

The Influence of similarity between target and distractor on the testing effect; Examination of phonological similarity at recognition test

The Influence of similarity between target and distractor on the testing effect; Examination of phonological similarity at recognition test

Phonological similarity affects production of gestures, even in the absence of overt speech.

Highlights Does phonological similarity affect gesture production in the absence of speech?Participants produced gestures from pictures with no words presented or spoken.Same pictures and gestures but different training labels were used.Phonologically similar labels led to more errors in subsequent gestures.Thus, phonological similarity affects gesture production in the absence of speech.Are manual gestures affected by inner speech? This study tested the hypothesis that phonological form influences gesture by investigating whether phonological similarity between words that describe motion gestures creates interference for production of those gestures in the absence of overt speech. Participants learned to respond to a picture of a bottle by gesturing to open the bottle's cap, and to a picture of long hair by gesturing to twirl the hair. In one condition, the gestures were introduced with phonologically-similar labels “twist” and “twirl” (similar condition), while in the other condition, they were introduced with phonologically-dissimilar labels “unscrew” and “twirl” (dissimilar condition). During the actual experiment, labels were not produced and participants only gestured by looking at pictures. In both conditions, participants also gestured to a control pair that was used as a baseline. Participants made significantly more errors on gestures in the similar than dissimilar condition after correction for baseline differences. This finding shows the influence of phonology on gesture production in the absence of overt speech and poses new constraints on the locus of the interaction between language and gesture systems.

A mega recognition memory study of 2897 disyllabic words.

Following the studies by Cortese, Khanna, and Hacker (2010) on recognition memory for monosyllabic words, recognition memory estimates (e.g., hits, false alarms, hits minus false alarms) for 3000 disyllabic words were obtained from 120 subjects and 2897 of these words were analysed via multiple regression. Participants studied 30 lists of 50 words and were tested on 30 lists of 100 words. Of the subjects, 60 received a constant study time of 2000 ms per item and 60 studied items at their own pace. Specific predictor variables included log word frequency, word length, imageability, age of acquisition, orthographic similarity, and phonological similarity. The results were similar to those of Cortese et al. (2010). Specifically, in the analysis of hits minus false alarms, the entire set of predictor variables accounted for 34.9% of the variance. All predictor variables except phonological similarity were related to performance, with imageability, length, orthographic similarity and frequency all being strong predictors. These results are mostly compatible with the predictions made by single- and dual-process theories. However, across items hit rates were not correlated with false alarms. Given that most variables produced the standard mirror pattern, this latter outcome poses a major challenge for recognition memory theories.

Issues in the historical phonology of Gauri Jingpho

The aim of this paper is two-fold: (a) to argue that Gauri Jingpho, an underdescribed dialect of Jingpho spoken by small populations in hill tracts east of Bhamo, Burma (Myanmar), belongs to the Southern group within Jingpho dialects despite its superficial similarity to the Northern group; and (b) to provide phonological developments and a notable retention of Gauri phonology.This paper classifies Gauri into the Southern group within Jingpho dialects on the basis of irregular phonological developments in which proto-final *-k and proto-prefix *n- dropped in some specific lexical items, and on the basis of not having all the four phonological innovations which all the Northern dialects share. This paper will show that the phonological similarities between Gauri and Northern dialects are due to shared retentions or parallel innovations occurred independently.This paper also provides phonological developments in Gauri, which can be summarized as follows: *ph- > f-; *kh- > h-; *-k > -Ɂ; *-k > Ø (sporadic);*-a > -o/*w- or *Ɂw-＿ (sporadic); *-a > -e/*y- or *Ɂy-＿ *-t or *-n. This paper also shows that Gauri is well preserves Proto-Jingpho medial *-r- as -r-, which has irregularly developed into -y- in some Jingpho dialects, on the basis of comparative evidence.

Revisiting neighborhood density: Adult perception of phonological similarity

ABSTRACTPhonological similarity (i.e., neighborhood density) has been operationalized in the literature as a single phonemic difference between words. However, few studies have assessed the validity of such a measure. In the present study, 50 typical adults were presented with 70 nonwords and asked to name a similar-sounding real word for each item. Results indicated that participants changed an average of one segment per word, although a fifth of productions involved changing more than one of the segments; substitutions were the most common change. Targets that received a wide variety of responses and that did not phonologically resemble many real words resulted in the greatest number of changes. Using a single-segmental metric to index phonological similarity has its limitations, and may inadequately incorporate other influential elements of a word such as the frequencies of its neighbors.

Absolute and proportional measures of potential markers of rehearsal, and their implications for accounts of its development.

Previous studies of the development of phonological similarity and word length effects in children have shown that these effects are small or absent in young children, particularly when measured using visual presentation of the memoranda. This has often been taken as support for the view that young children do not rehearse. The current paper builds on recent evidence that instead suggests that absent phonological similarity and word length effects in young children reflects the same proportional cost of these effects in children of all ages. Our aims are to explore the conditions under which this proportional scaling account can reproduce existing developmental data, and in turn suggest ways that future studies might measure and model phonological similarity and word length effects in children. To that end, we first fit a single mathematical function through previously reported data that simultaneously captures absent and negative proportional effects of phonological similarity in young children plus constant proportional similarity effects in older children. This developmental function therefore provides the benchmark that we seek to re-produce in a series of subsequent simulations that test the proportional scaling account. These simulations reproduce the developmental function well, provided that they take into account the influence of floor effects and of measurement error. Our simulations suggest that future empirical studies examining these effects in the context of the development of rehearsal need to take into account proportional scaling. They also provide a demonstration of how proportional costs can be explored, and of the possible developmental functions associated with such an analysis.