Toute orthographe est mixte, elle fait coexister deux principes : le principe phonographique, qui consiste en la transcription des phonèmes, et le principe sémiographique, en vertu duquel une unité graphique renvoie à du sens. Les analyses actuelles des spécialistes de l’écriture tendent à réévaluer la dimension sémiographique de l’orthographe. L’objectif est de faire apparaitre l’importance de ce versant de l’orthographe. Il s’agit d’établir la sémiographie des graphèmes vocaliques eau, au, ein, ain, ai et ei du français, en dégageant leurs valeurs logogrammique, morphogrammique grammaticale et morphogrammique lexicale, cette dernière valeur comportant deux aspects, d’une part, la valeur sémantique des graphèmes, d’autre part, la régularité des séries lexicales dans lesquelles apparaissent les mots comportant le graphème étudié. Pour cela, nous constituons des inventaires aussi vastes que possible de leurs occurrences lexicales et grammaticales. / Every orthography is a dual object, it combines two principles : the phonographic principle, which consists of the transcription of the language’s sounds, and the semiographic principle, in accordance with which a graphic unit refers to sense. Writing specialists’ current analyses tend to reevaluate the orthography’s semiographical dimension. The aim of this essay is to make appear the importance of the semiography of the vocalic graphemes ei, ein, ai, ain, au, eau, seeking their logogrammic, grammatical morphogrammic and lexical morphogrammic part, the morphogrammic part making appear the graphemes’ semantic part and the lexical series of the studied graphemes. We form a corpus as wide as possible of their lexical and grammatical occurrences.

This dissertation is aimed at investigating the impact of postural changes within speakers on the acoustic speech signal to complement research on articulatory changes under the same conditions. The research is therefore relevant for forensic phonetics, where quantifying within-speaker variation is vital for the accuracy of speaker comparison. To this end, two acoustic studies were carried out to quantify the influence of five head positions and three body orientations on the acoustic speech signal. Results show that there is a consistent change in the third formant, a change which was most evident in the body orientation measurements, and to a lesser extent in the head position data. Analysis of the results with respect to compensation strategies indicates that speakers employ different strategies to compensate for these perturbations to their vocal tract. Some speakers did not exhibit large differences in their speech signal, while others appeared to compensate much less. Across all speakers, the effect was much stronger in what were deemed ‘less natural’, postures. That is, speakers were apparently less able to predict and compensate for the impact of prone body orientation on their speech than for that of the more natural supine orientation. In addition to the acoustic studies, a perception experiment assessed whether listeners could make use of acoustic cues to determine the posture of the speaker. Stimuli were chosen with, by design, stronger or weaker acoustic cues to posture, in order to elicit a possible difference in identification performance. Listeners were nevertheless not able to identify above chance whether a speaker was sitting or lying in prone body orientation even when hearing the set with stronger cues. Further combined articulatory and acoustic research will have to be carried out to disentangle which articulatory behaviours correlate with the acoustic changes presented in order to draw a more comprehensive picture of the effects of postural variation on speech.

In der vorliegenden Arbeit wurden erstmalig laryngeale Konstriktionen quantitativ und qualitativ in den frühesten Lautäußerungen von Säuglingen mit angeborenen Lippen-Kiefer-Gaumen-Segelspalten (LKGS) in den ersten 3 Lebensmonaten im Längsschnitt untersucht. Als theoretische Grundlage diente Eslings Modell des Laryngealen Artikulators, wonach artikulatorische Entwicklungsvorgänge bereits in den ersten Lebensmonaten der Säuglinge mit der Erzeugung einer Vielzahl laryngealer Lautphänomene beginnen. Potenzielle Einflüsse auf diese präartikulatorischen Vorgänge durch den Ausprägungsgrad der Spaltbildung, das Lebensalter und die kieferorthopädische Frühbehandlung mit Gaumenplatte wurden mittels deskriptiver und interferenzstatistischer Verfahren analysiert. Von einer sorgfältig ausgewählten Stichprobe, bestehend aus 27 Säuglingen, wurden mehr als 10.000, im Rahmen der interdisziplinären Spaltsprechstunde routinemäßig aufgezeichneten Einzelsignale, retrospektiv untersucht. Das regelhafte Auftreten von laryngealen Konstriktionen konnte im Untersuchungszeitraum nachgewiesen werden und bestätigt, dass präartikulatorische Übungen primitiver Artikulationsmuster bei Säuglingen mit LKGS in gleicher Weise erfolgen wie bei Säuglingen ohne LKGS. Die Bedeutung der propriozeptiven Rückkopplung für die Erzeugung von laryngealen Konstriktionen wurde herausgearbeitet und potenzielle marginale Einflüsse der Vokaltraktmalformation diskutiert. Es wird ein früher artikulatorischer Substitutionsmechanismus für die präartikulatorische Entwicklung der Säuglinge mit ausgeprägten Spaltbildungen postuliert. Hinsichtlich der temporalen Eigenschaften laryngealer Konstriktionen bestätigte ein Vergleich mit Silbenlängen aus der Fachliteratur die Annahme, dass laryngeale Konstriktionen möglicherweise ein konstantes Element zur Rhythmisierung von Lauten im Sinne der artikulatorischen Silbenentwicklung sein könnten. / In the present study, laryngeal constrictions in the earliest vocalizations of infants with congenital cleft lip and palate (CLP) in the first 3 months of life were investigated quantitatively and qualitatively in a longitudinal section for the first time. Esling's model of the laryngeal articulator served as the theoretical basis, according to which articulatory developmental processes already begin in the first months of an infant's life with the production of a variety of laryngeal sound phenomena. Potential influences on these pre-articulatory processes by the degree of cleft formation, age and early orthodontic treatment with a palatal plate were analyzed using descriptive and inferential statistical methods. From a carefully selected sample of 27 infants, more than 10,000 individual signals routinely recorded during interdisciplinary cleft consultations were retrospectively analyzed. The regular occurrence of laryngeal constrictions was demonstrated during the study period and confirmed that pre-articulatory exercises of primitive articulation patterns occur in infants with CLP in the same way as in infants without CLP. The importance of proprioceptive feedback for the generation of laryngeal constrictions was elaborated and potential marginal influences of vocal tract malformation were discussed. An early articulatory substitution mechanism for the prearticulatory development of infants with pronounced clefts is postulated. With regard to the temporal properties of laryngeal constrictions, a comparison with syllable lengths from the specialist literature confirmed the assumption that laryngeal constrictions could possibly be a constant element for the rhythmization of sounds in terms of articulatory syllable development.

No description available.

The purpose of this study was to validate the listening comprehension component of the Centre Test in Japan (henceforth, JNCTL) in relation to contextual parameters and cognitive processing. For the purpose of this study, a comprehensive framework of contextual parameters and a L2 listening processing model was established. This provided a solid theoretical framework for this study, whereby empirical evidence was elicited in relation to contextual parameters and cognitive processing. The elicitation was made through document analysis, focus group interviews, and a large-scale questionnaire administered to stakeholders including 110 high school English teachers and 391 third year students of high schools. The elicited data was subjected to descriptive, quantitative and qualitative analysis. The results of Preliminary studies identified ten possible key parameters to help the JNCTL achieve greater validity. They included the number of opportunities to listen to the input, a lack of hesitations, a lack of overlapping turns, a lack of multi-participant discussions, a lack of variety in the English accents used, a lack of L2 speakers, a lack of inference questions, a lack of non-linear texts, a lack of sandhi-variations, and a lack of natural speech rate. The results of the questionnaire revealed that sandhi-variation was the key parameter to help the current JNCTL achieve greater validity in a direction that would be accepted by the stakeholders, and it was further explored in Main Study in attempt to investigate the effect of sandhi-variation on listening comprehension test performance and the level of cognitive load imposed on the test takers. A series of experiments was conducted involving the manipulation of sandhi-variation. The results revealed that although no statistical difference was found in item difficulty estimates between the sandhi-variation and non-sandhi-variation versions, sandhi-variation may involve double effects on listening comprehension for the test takers. The positive effects could involve providing more prominent phonological difference between accented and unaccented words in connected speech which are produced by sandhi-variation, and this difference may reduce the cognitive load imposed on the test takers. The negative effects may involve increasing the cognitive load imposed on the test takers by obscuring sounds through elision or unclear pronunciation, and disturbing speech perception or word recognition. Recommendations are provided for improving the validity of the current JNCTL and for the development of listening comprehension tests more generally. Implications are also suggested for the teaching of listening at secondary schools in Japan. Lastly, the limitations of the study are outlined and suggestions for further research are proposed.

Nous vivons dans un monde caractérisé par l'augmentation incessante du nombre et du volume des signaux sonores, qui finissent par être perçus comme autant de messages intrusifs. Si le silence est une valeur attestée dans une société du bruit, il se transforme en valeur commerciale, mais aussi morale, esthétique, écologique. En termes sémiotiques, il devient un objet de valeur : sa rareté lui assure le statut d’« objet » de luxe qui émerge de scénarisations et de mises en discours spécifiques. Aujourd’hui, le confort sonore est un grand enjeu de la qualité de vie. Nous avons le goût d’acheter le silence. Par conséquent, les comportements liés à nos activités quotidiennes peuvent se trouver en partie influencés par la valeur-silence. Il en va ainsi de nos comportements d'achat. Du coup, le silence se transforme en valeur commerciale. Le silence sonne parfois comme la signature d’un lieu. Il n’est pas seulement une certaine modalité du son, il est d’abord une certaine modalité du sens. Le silence n’est jamais une réalité en soi, mais toujours un processus de relation avec le monde humain et le rapport au monde de ce dernier. Dans la thématique générale du marketing sensoriel du point de vente, nous proposons une introduction sur la réalité de l'environnement sonore, plus particulièrement les différentes formes de lutte contre les nuisances et la valorisation d'ambiances silencieuses. Notre étude se concentre sur des facteurs d’ambiance sonore susceptibles d’influencer les acheteurs. Une étude expérimentale cherche à comprendre les processus d’influence de notre espace du silence sur les acheteurs et à vérifier certaines hypothèses théoriques non testées en France. / We live in a world characterized by an increase of ceaseless sound signals which end up being perceived as intrusive messages. If silence is an imperative value in a noisy society, it is transformed into not only commercial but also moral, aesthetic and ec ological values too. In semiotic terms, it becomes a valuable object: its rarity confirms its status as a luxurious object" that emerges from specific scripts and speeches. Today, the comfort sound is considered as one of major aspects of life quality that is made desire for buying silence. Consequently, some of our behaviors related to daily activities might be partly influenced by the value of silence. Therefore, it will affect our purchasing behavior. As a result, silence is transformed into commercial value. Silence sometimes becomes the unique characteristic of an area. It is not only a modality of sound but also more importantly a modality of the senses. Silence never considered as an absolute reality, it is always related to human world and intert wined with it. In the general interest on point of sales for sensory marketing, we propose an introduction on the reality of the noiseless environment, particularly the different ways to counter noises and the value of silent ambience. Our study focuses on ambient environments in order to stimulate buyer interest. In addition, an experimental study has been done in order to understand the influential mechanisms of noiseless environment on buyers and to verify certain untested the oretical hypotheses in France.

One of the phenomena to emerge from the study of human spoken interaction is accommodation or the tendency of an individual’s speech patterning to shift relative to their interlocutor. Whilst the experimental approach to the detection of accommodation has a solid background in the literature, it tends to treat the process of accommodation as a black box. The general approach for the detection of accommodation in speech has been to record the speech of a given speaker prior to interaction and then again after an interaction. These two measures are then compared to the speech of the interlocutor to test for similarity. If the speech sample following interaction is more similar then we can say that accommodation has taken place. Part of the goal of this thesis is to evaluate whether it is possible to look into the black box of speech accommodation and measure it ‘in situ’. Given that speech accommodation appears to take place as a result of interaction, it would be reasonable to assume that a similar effect might be observable in other areas contributing to a communicative interaction. The notion of an interacting dyad developing an increased degree of alignment over the course of an interaction has been proposed by psychologists. Theories have posited that alignment occurs at multiple levels of engagement, from broad levels of syntactic alignment down to phonetic levels of alignment. The use of speech accommodation as an anchor with which to track the evolution of change in the brain signal may prove to be one approach to investigating the claims made by these theories. The second part of this thesis aims to evaluate whether the phenomenon of accommodation is also observable in the form of electrical signals generated by the brain, measured using Electroencephalography (EEG). However, evaluating the change in the EEG signal over a continuous stretch of time is a hurdle that will need to be tackled. Traditionally, EEG methodologies involve averaging the signal over many repetitions of the same task. This is not a viable option when investigating communicative interaction. Clearly the evaluation of accommodation in both speech and brain activity, especially for continuously unfolding phenomena such as accommodation, is a non-trivial task. In order to tackle this, an approach from speech recognition and computer science has been employed. The implementation of Hidden Markov Models (HMM) has been used to develop speech recognition systems and has also been used to detect fraudulent attempts to imitate the voice of others. Given that HMMs have successfully been employed to detect the imitation of another person’s speech they are a good candidate for being able to detect the movement towards or away from an interlocutor during the course of an interaction. In addition, the use of HMMs is non-domain specific, they can be used to evaluate any time-variant signal. This adaptability of the approach allows for it to also be applied to EEG signals in conjunction with the speech signal. Two experiments are presented here. The behavioural experiment aims to evaluate the ability of a HMM based approach to detect accommodation by engaging pairs of female, Glaswegian speakers in the collaborative DiapixUK task. The results of their interactions are then evaluated from both a traditional phonetic standpoint, by assessing changes in Voice Onset Time (VOT) of stop consonants, formant values of vowels and speech rate over the course of an interaction and using the HMM based approach. The neural experiment looks to evaluate the ability of a HMM based approach to detect accommodation in both the speech signal and in brain activity. The same experiment that was performed in Experiment 1 was repeated, with the addition of EEG caps to both participants. The data was then evaluated using the HMM based approach. This thesis presents findings that suggest a function for speech accommodation that has not been explored in the past. This is done through the use of a novel, HMM based, holistic acoustic-phonetic measurement tool which produced consistent measures across both experiments. Further to this, the measurement tool is shown to have possible extended uses for EEG data. The use of the presented HMM based, holistic-acoustic measurement tool presents a novel contribution to the field for the measurement and evaluation of accommodation.

Made available in DSpace on 2016-01-13T13:27:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-07-27. Added 1 bitstream(s) on 2016-01-13T13:33:31Z : No. of bitstreams: 1 000853638_20170727.pdf: 273071 bytes, checksum: fb61fc71db384a995602031eab8b4254 (MD5) Bitstreams deleted on 2017-07-28T12:36:25Z: 000853638_20170727.pdf,. Added 1 bitstream(s) on 2017-07-28T12:37:12Z : No. of bitstreams: 1 000853638.pdf: 1549313 bytes, checksum: 92a10ff1e6d14601a38403c02fe2642a (MD5) Bitstreams deleted on 2017-08-07T14:09:14Z: 000853638.pdf,. Added 1 bitstream(s) on 2017-08-07T14:10:18Z : No. of bitstreams: 1 000853638.pdf: 1549313 bytes, checksum: 92a10ff1e6d14601a38403c02fe2642a (MD5) / A tese que aqui se apresenta a respeito do reino visigodo utiliza-se de um gênero de fontes, a hagiografia, como ponto de partida para abordagem proposta. Vemos nessas fontes um testemunho do imaginário em sua imbricação com o sagrado, ou seja, com o Cristianismo, e os limites da cristianização católica; o sincretismo religioso entre a fé cristã e as crenças ditas pagãs pela própria Igreja; e, dentro desse escopo, as representações do Mal, bem como a ética decorrente de tal percepção como elementos da religiosidade medieval - presentes na cultura visigoda -, os quais, não obstante extensos estudos realizados até o presente momento, exigem novas abordagens. Em linhas gerais, propomos analisar a percepção do Mal e suas representações na longa duração, o papel e intenções dos teólogos e hagiógrafos, dando atenção especial à religiosidade e suas implicações no imaginário. Como fontes principais de nossa pesquisa, que fazem parte do corpus hagiográfico visigodo, estão: A Vida de Santo Emiliano (Vita Sancti Aemiliani), de Bráulio de Saragoça; As Vidas dos Santos Padres de Mérida (Vitas Sanctorum Patrum Emeretensium) e A Vida de São Frutuoso (Vita Fructuosi), de autores desconhecidos; A Vida de São Desidério (Vita Desiderii), escrita por Sisebuto, e a autobiografia de Valério do Bierzo / This thesis about the Visigoth kingdom makes use of a genre of sources, the hagiography, as a starting point for the proposed approach. These sources show us an testimony of the imaginary in their imbrications with the sacred, that is, with Christianity, and the limits of the Catholic Christianization; religious syncretism between Christian faith and called beliefs pagan by the Church itself; and, within that scope, the representations of evil and ethics related to such perceptions as elements of medieval religiosity - present in the visigothic culture - which, despite extensive studies conducted until the present moment, require new approaches. Generally speaking, we propose to analyze the perception of evil and its representations in the long duration, the role and intentions of theologians and hagiographers, paying special attention to religiosity and its implications in the imaginary. As the main sources of our research, which are part of the Visigoth hagiographic corpus, are: Saint Emilian Life (Vita Sancti Aemiliani) of Braulio of Zaragoza; The Lives of the Saint Fathers of Merida (Vitas Sanctorum Patrum Emeretensium) and The Life of Saint Frutuoso (Vita Fructuosi) of unknown authors; The Life of St. Desiderius (Vita Desiderii), written by Sisebuto, and the autobiography of Valerius of Bierzo

Orientador: Ruy de Oliveira Andrade Filho / Banca: Sergio Alberto Feldman / Banca: Ana Paula Tavares Magalhães / Banca: Ronaldo Amaral / Banca: Milton Carlos Costa / Resumo: A tese que aqui se apresenta a respeito do reino visigodo utiliza-se de um gênero de fontes, a hagiografia, como ponto de partida para abordagem proposta. Vemos nessas fontes um testemunho do imaginário em sua imbricação com o sagrado, ou seja, com o Cristianismo, e os limites da cristianização católica; o sincretismo religioso entre a fé cristã e as crenças ditas "pagãs" pela própria Igreja; e, dentro desse escopo, as representações do Mal, bem como a ética decorrente de tal percepção como elementos da religiosidade medieval - presentes na cultura visigoda -, os quais, não obstante extensos estudos realizados até o presente momento, exigem novas abordagens. Em linhas gerais, propomos analisar a percepção do Mal e suas representações na longa duração, o papel e intenções dos teólogos e hagiógrafos, dando atenção especial à religiosidade e suas implicações no imaginário. Como fontes principais de nossa pesquisa, que fazem parte do corpus hagiográfico visigodo, estão: A Vida de Santo Emiliano (Vita Sancti Aemiliani), de Bráulio de Saragoça; As Vidas dos Santos Padres de Mérida (Vitas Sanctorum Patrum Emeretensium) e A Vida de São Frutuoso (Vita Fructuosi), de autores desconhecidos; A Vida de São Desidério (Vita Desiderii), escrita por Sisebuto, e a autobiografia de Valério do Bierzo / Abstract: This thesis about the Visigoth kingdom makes use of a genre of sources, the hagiography, as a starting point for the proposed approach. These sources show us an testimony of the imaginary in their imbrications with the sacred, that is, with Christianity, and the limits of the Catholic Christianization; religious syncretism between Christian faith and called beliefs "pagan" by the Church itself; and, within that scope, the representations of evil and ethics related to such perceptions as elements of medieval religiosity - present in the visigothic culture - which, despite extensive studies conducted until the present moment, require new approaches. Generally speaking, we propose to analyze the perception of evil and its representations in the long duration, the role and intentions of theologians and hagiographers, paying special attention to religiosity and its implications in the imaginary. As the main sources of our research, which are part of the Visigoth hagiographic corpus, are: Saint Emilian Life (Vita Sancti Aemiliani) of Braulio of Zaragoza; The Lives of the Saint Fathers of Merida (Vitas Sanctorum Patrum Emeretensium) and The Life of Saint Frutuoso (Vita Fructuosi) of unknown authors; The Life of St. Desiderius (Vita Desiderii), written by Sisebuto, and the autobiography of Valerius of Bierzo / Doutor

A large body of research has shown that a late bilingual’s L1 and L2 phonetic categories influence each other, yielding deviations from monolingual norms in the phonetics of both languages. Existing models of L2 sound acquisition (e.g., the Speech Learning Model; Flege, 1995, 2007) predict unified phonetic spaces which accommodate both L1 and L2 sound categories. Such connections between an L1 and an L2 are believed to lead to persistent non-nativelikeness in the L2, but also to divergence from the monolingual norm in the L1, as shown in numerous studies (e.g., Bergmann et al., 2016). In this dissertation, I focus on the differences in the sound patterns of a bilingual’s languages which do not only emerge in the precise phonetic realizations of L1 sounds but also in language-specific distributional patterns that determine the realization of these sound categories in different phonetic contexts. Previous work in L1 attrition is limited to a small set of phonetic properties (especially VOT, e.g., Flege, 1987), variables beyond L2 transfer which are known to give rise to variable realizations have been neglected. Thus, little is known as to whether bilinguals’ realizations of an L1 sound category in different phonetic contexts (e.g., position within a syllable) are subject to change in L1 attrition, and whether such changes arise due to long-term exposure to different distributional patterns of an equivalent L2 category. In this dissertation I address these gaps by exploring L1 attrition in the distributional and phonetic characteristics of liquids to shed light on the contribution of the L2 and the role of general phonetic and phonological variables to the processes that drive change in an L1. I investigate changes to phonetic properties and distributional patterns of rhoticity and /l/-allophony in the L1 of American-German late bilinguals, a language constellation which offers an instructive test case to investigate the causes of L1 attrition as well as the source from which changes due to L1 attrition emerge. Furthermore, changes to liquids can also shed light on the processes which drive sound change, gradience and variability due to various positional and phonetic factors (e.g., preceding vowel, syllable structure) in liquids across many native varieties of English. In particular, I explore the variable realization and distributional patterns of two sounds known to be subject to a considerable degree of gradience and variability, namely English /r/ and /l/, in American English-German late bilinguals. To that end, I present the results of a production study of 12 L2-dominant American English-German late bilinguals as well as a monolingual control group for each language. The speakers performed a variety of production tasks which were aimed to elicit the realization of (non)-rhoticity and /l/-(non-)allophony in both languages of the late bilinguals, English and German which were analyzed auditorily (/r/ only) and acoustically (/r/ and /l/). Although L1 attrition of rhotics and laterals has been investigated previously (e.g., de Leeuw, 2008; Ulbrich & Ordin, 2014), the effect of contextual variables on L1 attrition and whether such variables also shape L1 attrition remains unexplored. The results of the auditory analyses of postvocalic /r/ revealed that the late bilinguals showed non-convergence with monolingual (non-)rhoticity in both of their languages by vocalizing postvocalic /r/ more frequently in their L1 (English) and failing to entirely suppress rhoticity in their L2 (German) leading up to a higher degree of rhoticity in their L2. While the loss of rhoticity in the bilingual’s English was distributed along a spectrum of contextual constraints (e.g., type of pre-rhotic vowel and morpho-phonological environment) known to affect rhoticity in other English varieties, the non-targetlike productions of non-rhoticity (i.e., non-vocalized postvocalic /r/) in their L2, German, were not sensitive to the same contextual constraints. The acoustic analyses of the bilinguals’ rhotic productions in English and German differed from the monolinguals in the acoustic correlates of rhoticity in pre-rhotic vowels where they showed reduced anticipatory F3-lowering (i.e., less /r/-colored vowels). I take my results to indicate that the bilinguals operate in two separate phonological grammars which approximate the respective L1 norm but show an increase of variability along constraints already present in each grammar. In contrast, the bilinguals’ phonetic system seem shared between the two grammars. This leads to persistent L1-L2-interactions as the two grammars operate within the same phonetic space. Thus, the changes in L1 attrition are induced but not governed by the L2: Change to the L1 reflects constraints underlying the L1 as well as more general laws of phonetics and universal trajectories of language change. The lateral results revealed that just like in postvocalic /r/, the bilinguals showed non-convergence with the monolingual norm regarding the velarization of coda /l/ in both their languages. The changes to English laterals were sensitive to their positional context and more substantial for word-initial laterals than word-final laterals. Similarly, their German laterals were non-convergent with the monolinguals in two ways. Firstly, the bilinguals differed with regard to the acoustic specifications of their laterals, and secondly, the bilinguals failed to suppress the lateral allophony from their L1, leading to a non-targetlike allophonic pattern in their L2 laterals. I interpret the lateral results to lack evidence that the L1 allophonic rule was affected by the presence of an L2; nevertheless, L1 change emerged in the phonetic specifications of laterals. Furthermore, the bilinguals did not establish a nativelike allophonic pattern in their L2, leading to non-convergence in the allophonic distribution as well as the phonetic realization of German laterals. In this way, this dissertation provides evidence for L1 attrition in the distributional and the phonetic properties of liquids in the L1 of late bilinguals. In particular, the study presented in this dissertation provides evidence that L1 attrition is induced by the presence of a similar sound pattern in the L2. The pathway of attrition follows constraints not only underlyingly present in the L1 but also part of the universal laws of phonetics known to shape sound change. To explain these results, I draw from existing constraint grammars in phonological theory (such as Optimality Theory and Harmonic Grammar) to develop my Dynamic Constraints approach which allows the effects of external variables (e.g., L2 acquisition and its effect on the mind), and internal variables such as an increased likelihood of variability due to articulatory differences can be modeled using scaling factors which can interact with each other, the noise within the grammars, and the constraint weight itself. In this way, the model links previous findings on L1 attrition and its connections to diachronic and synchronic variability, offering insights into the links between the individual languages in a bilingual’s mind. / Bis heute hat eine Vielzahl von Studien zum Spracherwerb im Erwachsenenalter gezeigt, dass sich die phonetischen Merkmale der Muttersprache (L1) und Zweitsprache (L2) gegenseitig beeinflussen. Durch den Einfluss der L1 auf die Lautbildung in der L2 weichen insbesondere späte L2-Lerner von der L1 Norm ab. Modelle zum Erwerb von Lautmerkmalen in einer Zweitsprache wie zum Beispiel das Speech Learning Model (SLM) von Flege (2007) erklären den starken Einfluss der L1 im Spracherwerb im Erwachsenenalter anhand einer Eingliederung des Lautsystems der L2 in den bereits bestehenden phonetischen Raum der L1. Die dadurch entstandene Verknüpfung zwischen der L1 und der L2 führten nicht nur zum Einfluss der L1 auf die L2, sondern wie durch das SLM vorgesagt und durch neuere Studien gezeigt (z.B. DeLeeuw, Mennen & Scobbie, 2004; Chang, 2012), auch zu Veränderungen der L1 Lautkategorien. Diese nähern sich hierbei an die Ziellaute der L2 an, ein Prozess der als Spracherosion bezeichnet wird. Über das genaue Fortschreiten und die Gesetzmäßigkeiten des Einflusses der L2 auf die L1 ist jedoch wenig bekannt. In der bisherigen Forschung wurden Veränderungen in der L1 durch Transfer von der L2 in die L1 erklärt; jedoch zeigt sich bei genauerer Betrachtung vorheriger Ergebnisse, dass die L2 allein nicht ausreicht, um die beobachteten Veränderungen vollständig zu erklären. In meiner Dissertation befasse ich mich mit Prozessen der Spracherosion, welche sich nicht nur in den konkreten phonetischen Realisierungen von Lauten der L1 später bilingualer Sprecher äußern, sondern auch in den Verteilungsmustern von konkreten positionsspezifischen Lautvarianten. Die Forschung zur Spracherosion in der L1 beschränkte sich bislang auf eine kleine Anzahl von phonetischen Merkmalen, insbesondere VOT (z.B. Flege, 1987), und erklärte Veränderungen vollständig über die Merkmaleigenschaften der L2. Im Gegensatz hierzu ist der Beitrag anderer Faktoren jenseits des L2-Transfers zur Spracherosion weitestgehend unerforscht. Daher ist aktuell wenig bekannt, ob zweisprachige Realisierungen einer L1-Lautkategorie in verschiedenen phonetischen Kontexten (z. B. Position innerhalb einer Silbe) ebenfalls von Erosionserscheinungen betroffen sein können. Ebenfalls ist der Grund für solche Veränderungen unbekannt. In meiner Dissertation schließe ich diese Lücke, indem ich untersuche, wie Veränderungsprozesse der Spracherosion in den Verteilungs- und phonetischen Merkmalen wirken. Zu diesem Zweck untersuche ich Veränderungen phonetischer Merkmale sowie der Verteilungsmuster von L1-Rhotizität und /l/-Allophonen bei späten Amerikanisch-Deutschen Bilingualen. Zu diesem Zweck präsentiere ich mein Ergebnis einer Produktionsstudie von zwölf L2-dominanten Amerikanisch-Deutsch-Spätsprachlern sowie einer einsprachigen Kontrollgruppe zur jeweiligen Sprache. Die Proband*innen führten eine Vielzahl von Produktionsaufgaben, die darauf abzielten, die (Nicht-) Rhotizität und /l/-Allophonie in beiden Sprachen (Englisch und Deutsch) zu evaluieren. Diese habe ich in dieser Arbeit auditiv analysiert (nur /r/) und akustisch (/r/ und /l/) ausgewertet. Obwohl der Verlust von Rhotischen und Lateralen in der L1 bereits untersucht wurde (z. B. de Leeuw, 2008; Ulbrich & Ordin, 2014), blieb der Effekt von linguistischen und nicht-linguistischen Variablen auf den Erstsprachverlust bisher unerforscht. Das Ergebnis der auditorischen Analyse von postvokalischen /r/ zeigt, dass die späten Bilingualen von monolingualen Sprechern beider Sprachen abweichen. Im Englischen realisierten die Bilingualen das postvokalische /r/ häufiger in der L2-ähnlichen (vokalisierten) Variante und zeigten Reste von konsonantischen Realisierungen in der eigentlich nicht-rhotischen L2. Während der Verlust der Rhotizität in der L1 der Bilingualen (Englisch) von kontextuellen Beschränkungen (z. B. Art des vorrhotischen Vokals und der morphophonologischen Struktur der Silbe) geprägt war und differentielle Verteilungen über die Kontexte hinweg zeigte, waren die Bilingualen in ihrer L2 (Deutsch) nicht empfänglich für kontextuelle Variation, wie es auch in monolingualen Sprechern des Deutschen erwartet wird. Die akustischen Analysen zeigen, dass rhotische Produktionen der zweisprachigen Sprecher im Englischen und Deutschen sich deutlich von denen der monolingualen Kontrollgruppen unterscheiden: Hier wichen die späten Bilingualen vor allem in der Produktion antizipatorischer Rhotizität ab und produzierten die vorrhotischen Vokale mit weniger rhotischer Färbung. Ich interpretiere meine Ergebnisse als Beleg, dass die bilingualen Sprecher in zwei getrennten phonologischen Grammatiken für ihre Sprache arbeiten, die jeweils der L1-Norm entsprechen, jedoch einen höheren Grad an Variabilität zeigen. Diese Variabilität entsteht jedoch nicht durch sprachübergreifenden Transfer, sondern ist beeinflusst von den grammatischen Gegebenheiten der L1. Die phonetische Analyse zeigte im Gegensatz dazu, dass die bilingualen in einem einzigen phonetischen Raum agieren, welchen sich beide Sprachen teilen und wodurch phonetische Wechselwirkungen zwischen beiden Sprachen entstehen. Somit werden die Veränderungen im Zuge der Spracherosion von der L2 induziert, aber nicht von ihr gesteuert. Die Änderungen der L1 zeigt Sprachveränderungen auf, denen die Grammatik der L1 zugrunde liegt, und sind weiterhin geprägt von allgemeinen Gesetzen der Phonetik und des Sprachwandels. Die Ergebnisse der Lateral-Analyse zeigen, dass genau wie in postvokalischen /r/ die zweisprachigen Sprecher nicht mit monolingualen Sprechern konvergent sind. Besonders in Bezug auf die Velarisierung von wortfinalen /l/ in beiden Sprachen unterscheidet sich die bilinguale Gruppe deutlich von Monolingualen. Die festgestellten Änderungen unterlagen hier positionsbedingten Beschränkungen und waren im wortinitialen /l/ deutlich stärker ausgeprägt als im wortfinalen /l/. Weiterhin zeigten die Bilingualen eine stark ausgeprägte Allophonie in beiden Sprachen. Die Ergebnisse der Untersuchungen zu Lateralen liefern jedoch keinen Beleg für einen gleichmäßigen Erosionsprozess, und waren stattdessen stark geprägt von der L1 sowie von universellen Gesetzmäßigkeiten der Lautbildung. Insofern zeigt meine Dissertation, dass Spracherosion nicht einheitlich auf einen Sprecher wirkt, sondern dass Spracherosion einem historischen Prozess des Lautwandels ähnelt, welcher universellen phonetischen und phonologischen Gesetzen folgt. Die Ergebnisse meiner Studie erkläre ich mithilfe von phonologischen Constraint-Grammatiken (insbesondere Optimality Theory und Harmonic Grammar), den ich Dynamic Constraints nenne. In diesem Ansatz modifiziere ich einen Algorhithmus, wodurch linguistische und nicht-linguistische Faktoren das Gewicht von Constraints und die zufällige Streuung von Gewichten beeinflussen können. Hierdurch ergibt sich die Möglichkeit, mit Dynamic Constraints bisherige Forschungsergebnisse im Bereich der Psycholinguistik mit Kenntnissen aus der historischen und sozialen Sprachforschung zu verbinden und einen Einblick in die Sprachsysteme von Bilingualen zu gewinnen.