Perceptual-gestural (mis)mapping in serial short-term memory: The impact of talker variability

The mechanisms underlying the poorer serial recall of talker-variable lists (e.g., alternating female–male voices) as compared with single-voice lists were examined. We tested the novel hypothesis that this talker variability effect arises from the tendency for perceptual organization to partition the list into streams based on voice such that the representation of order maps poorly onto the formation of a gestural sequence-output plan assembled in support of the reproduction of the true temporal order of the items. In line with the hypothesis, (a) the presence of a spoken lead-in designed to further promote by-voice perceptual partitioning accentuates the effect (Experiments 1 and 2); (b) the impairment is larger the greater the acoustic coherence is between nonadjacent items: Alternating-voice lists are more poorly recalled than four-voice lists (Experiment 3); and (c) talker variability combines nonadditively with phonological similarity, consistent with the view that both variables disrupt sequence output planning (Experiment 4). The results support the view that serial short-term memory performance reflects the action of sequencing processes embodied within general-purpose perceptual input-processing and gestural output-planning systems

The Missing Link between Morphemic Assemblies and Behavioral Responses:a Bayesian Information-Theoretical model of lexical processing

We present the Bayesian Information-Theoretical (BIT) model of lexical processing: A mathematical model illustrating a novel approach to the modelling of language processes. The model shows how a neurophysiological theory of lexical processing relying on Hebbian association and neural assemblies can directly account for a variety of effects previously observed in behavioural experiments. We develop two information-theoretical measures of the distribution of usages of a morpheme or word, and use them to predict responses in three visual lexical decision datasets investigating inflectional morphology and polysemy. Our model offers a neurophysiological basis for the effects of morpho-semantic neighbourhoods. These results demonstrate how distributed patterns of activation naturally result in the arisal of symbolic structures. We conclude by arguing that the modelling framework exemplified here, is a powerful tool for integrating behavioural and neurophysiological results

Speech rhythm: a metaphor?

Is speech rhythmic? In the absence of evidence for a traditional view that languages strive to coordinate either syllables or stress-feet with regular time intervals, we consider the alternative that languages exhibit contrastive rhythm subsisting merely in the alternation of stronger and weaker elements. This is initially plausible, particularly for languages with a steep ‘prominence gradient’, i.e. a large disparity between stronger and weaker elements; but we point out that alternation is poorly achieved even by a ‘stress-timed’ language such as English, and, historically, languages have conspicuously failed to adopt simple phonological remedies that would ensure alternation. Languages seem more concerned to allow ‘syntagmatic contrast’ between successive units and to use durational effects to support linguistic functions than to facilitate rhythm. Furthermore, some languages (e.g. Tamil, Korean) lack the lexical prominence which would most straightforwardly underpin prominence alternation. We conclude that speech is not incontestibly rhythmic, and may even be antirhythmic. However, its linguistic structure and patterning allow the metaphorical extension of rhythm in varying degrees and in different ways depending on the language, and that it is this analogical process which allows speech to be matched to external rhythms

Early production of the passive in two Eastern Bantu languages

The passive construction is acquired relatively late by children learning to speak many languages, with verbal passives not fully acquired till age 6 in English. In other languages it appears earlier, around age 3 or before. Use of passive construction in young children was examined in two Eastern Bantu languages spoken in Kenya (Kiswahili and Kigiriama), both with frequent use of passive. The passive was used productively very early (2;1) in these languages, regardless of the method used to measure productivity. In addition non-actional passives, particularly rare in English and some other European languages, were seen at these early ages. The proportion of verbs that were passive varied between individuals, both in children's speech and in the input to children. Pragmatic and grammatical features of the passive in some languages have previously been suggested to drive early passive acquisition, but these features are not found consistently in the two languages studied here. Findings suggest that the relatively high frequency of input found in these languages is the most plausible reason for early productive use of the passive

THE EFFECT OF SEMANTIC NEIGHBORHOOD DENSITY ON VOCABULARY LEARNING IN SPANISH AS A SECOND LANGUAGE AND SPANISH AS A HERITAGE LANGUAGE

This dissertation reviews the results from an online survey created to identify and compare how second language (L2) learners and heritage language (HL) learners of Spanish, enrolled in beginning-level coursework at the college level, acquired and built vocabulary. A total of 451 participants completed the survey. The purpose of the online survey was to serve as a baseline for pedagogical purposes, since it provided information about participants’ language profiles and the way they build vocabulary based on sematic relatedness. Overall, the findings from the survey showed that HL and L2 learners differ in the way they build semantic neighborhoods and, in their meaning-making processes. HL participants produced a higher number of Spanish semantic associations for the provided Spanish categories, whereas L2 learners produced a higher number of English semantic associations for both the Spanish and English categories. Additionally, HL learners left more responses blank in both the Spanish and English categories. The findings support the idea that tailored vocabulary pedagogical practices and interventions will benefit and enhance students’ vocabulary development and learning in the Spanish language classroom

A Neuroeducation Description of a Paradigm Shift in Identification, Assessment, and Treatment of Suspected Childhood Apraxia of Speech with Supporting Evidence Through Interview and Artifact Analysis Provided by Speech Language Pathologists and Educators

The purpose of this study was twofold. First, the study explored the pertinent cognitive psychology, neuroscience, and language literature that surrounds the diagnosis and treatment of children with Suspected Childhood Apraxia of Speech (sCAS) with the intent of finding a translational neuroeducation approach to the treatment of sCAS. The results of this literature suggest that the surface problems-phonology, morphology, syntax- are mapped onto a semantic basis. This semantic basis is feature based and people with speech sound disorders are likely to use a visual semantic feature basis. So, the literature supports a shift to a new lens that aligns with the Neurosemantic Language Learning Theory (NLLT) and that could be the basis for intervention in sCAS. Second, while traditional treatment is aimed at the acoustic motor patterns of phonological processes, this study sought to uncover what professionals who have some neuroeducation training say they do when they treat children with sCAS. Interviews were conducted with sixteen Speech Language Pathologists (SLPs) and Educators currently using principles of neuroeducation to treat children with sCAS in order to uncover the methods that they report having used in interventions with this population. It was found that both SLPs and educators who use methods of assessment and intervention based on the NLLT reported positive outcomes for intelligibility and language function. The respondents also reported using intervention methods that align with the NLLT to a high degree. The interviews, along with artifacts provided by interview participants, served as confirmatory evidence to the findings from the literature review by demonstrating the reported change in children over time as a result of the intervention. Additional themes were found around definitions of sCAS, intervention methods and alignment of diagnostic criterion, philosophy and intervention methods among interviewees

Early phonological acquisition by Kuwaiti Arabic children

PhD ThesisThis is the first exploration of typical phonological development in the speech of children acquiring Kuwaiti-Arabic (KA) before the age of 4;0. In many of the word’s languages, salient aspects of the ambient language have been shown to influence the child’s initial progress in language acquisition (Vihman, 1996, 2014); however, studies of phonological development of Arabic lack adequate information on the extent of the influence of factors such as frequency of occurrence of certain features and their phonological salience on the early stages of speech acquisition. A cross-sectional study design was adapted in this thesis to explore the speech of 70 typically developing children. The children were sampled from the Arabic-speaking Kuwaiti population; the children were aged 1;4 and 3;7 and gender-balanced. Spontaneous speech samples were obtained from audio and video recordings of the children while interacting with their parent for 30-minutes. The production accuracy of KA consonants was examined to explore the influence of type and token frequencies on order of consonant acquisition and the development of error patterns. The sonority index was also used to predict the order of consonant acquisition cross-linguistically. The findings were then compared with those of other dialects of Arabic to identify within-language variability and with studies on English to address cross-linguistic differences between Arabic and English early phonological development. The results are partially consistent with accounts that argue for a significant role of input frequency in determining rate and order of consonant acquisition within a language. The development of KA error patterns also shows relative sensitivity to consonant frequency. The sonority index does not always help in the prediction of all Arabic consonants, and the developmental error patterns and early word structures in Arabic and English are significantly distinct. The outcomes of this study provide essential knowledge about typical Arabic phonological development and the first step towards building a standardised phonological test for Arabic speaking children

Directional adposition use in English, Swedish and Finnish

Directional adpositions such as to the left of describe where a Figure is in relation to a Ground. English and Swedish directional adpositions refer to the location of a Figure in relation to a Ground, whether both are static or in motion. In contrast, the Finnish directional adpositions edellä (in front of) and jäljessä (behind) solely describe the location of a moving Figure in relation to a moving Ground (Nikanne, 2003). When using directional adpositions, a frame of reference must be assumed for interpreting the meaning of directional adpositions. For example, the meaning of to the left of in English can be based on a relative (speaker or listener based) reference frame or an intrinsic (object based) reference frame (Levinson, 1996). When a Figure and a Ground are both in motion, it is possible for a Figure to be described as being behind or in front of the Ground, even if neither have intrinsic features. As shown by Walker (in preparation), there are good reasons to assume that in the latter case a motion based reference frame is involved. This means that if Finnish speakers would use edellä (in front of) and jäljessä (behind) more frequently in situations where both the Figure and Ground are in motion, a difference in reference frame use between Finnish on one hand and English and Swedish on the other could be expected. We asked native English, Swedish and Finnish speakers’ to select adpositions from a language specific list to describe the location of a Figure relative to a Ground when both were shown to be moving on a computer screen. We were interested in any differences between Finnish, English and Swedish speakers. All languages showed a predominant use of directional spatial adpositions referring to the lexical concepts TO THE LEFT OF, TO THE RIGHT OF, ABOVE and BELOW. There were no differences between the languages in directional adpositions use or reference frame use, including reference frame use based on motion. We conclude that despite differences in the grammars of the languages involved, and potential differences in reference frame system use, the three languages investigated encode Figure location in relation to Ground location in a similar way when both are in motion. Levinson, S. C. (1996). Frames of reference and Molyneux’s question: Crosslingiuistic evidence. In P. Bloom, M.A. Peterson, L. Nadel & M.F. Garrett (Eds.) Language and Space (pp.109-170). Massachusetts: MIT Press. Nikanne, U. (2003). How Finnish postpositions see the axis system. In E. van der Zee & J. Slack (Eds.), Representing direction in language and space. Oxford, UK: Oxford University Press. Walker, C. (in preparation). Motion encoding in language, the use of spatial locatives in a motion context. Unpublished doctoral dissertation, University of Lincoln, Lincoln. United Kingdo