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Institute
In the following, we will discuss the acquisition of plural forms in German from the unified perspective of the two, in our opinion compatible, approaches, on the basis of a longitudinal data sample of eight children. There are at least six recordings of each child, all of whom are girls. Together, the data cover the acquisition period from 1;11 to 2;10. One may thus anticipate that the data sample under investigation reflects the transition from purely lexical memorization to the acquisition of regularities or patterns.
The papers of this 33th volume of the ZAS Papers in Linguistics present intermediate results of the ZAS-project on language acquisition. Currently we deal with the question of which functions children assign to the first grammatical forms they use productively. The goal is to identify grammatical features comprising the child's early grammar. This issue is investigated within the analyses of longitudinal data (cf. the papers of Gagarina/Bittner, Gagarina, Kühnast/Popova/Popov, Bewer) as well as within experimental research (see the papers of Bittner, Kühnast/Popova/Popov). The main topic of this volume is the acquisition of definite articles and verbal aspect.
Bewer – who has worked as a student assistant in the project for a long time and wrote her MA-thesis on the topic of the project – investigates children's acquisition of gender features in German. Kühnast/Popova/Popov discuss the correlations between the acquisition of definite articles and verbal aspect in Bulgarian. Bittner presents results of an experimental study on definite article perception in adult German. Gagarina traces the emergence of aspectual oppositions in Russian and examines the validity of the 'aspect before tense' hypothesis for L1-speaking children. Additionally, the paper of Gagarina/Bittner deals with the interrelation between the acquisition of finiteness and verb arguments in Russian and German.
In these conclusions we can deal only with some of the tentative comparative results of the workshop papers on the early development of verb morphology. The main focus is on criteria of how the child detects morphology and how this emerging morphological competence develops in its earliest phases. In view of the purpose and tentative character of these conclusions, all references will be limited to the papers of the workshop and to earlier studies by workshop participants within the "Crosslinguistic Project on Pre- and Protomorphology in Language Acquisition". Much more will be given in the projected final publication.
Introduction
(2000)
Crosslinguistic research on the production of tense morphology in child language has shown that young children use past or perfective forms mainly with telic predicates and present or imperfective forms mainly with atelic predicates. However, this pattern, which has come to be known as the Aspect First Hypothesis, has been challenged in a number of comprehension studies. These studies suggest that children do not rely on aspectual information for their interpretation of tense morphology. The present paper tests the validity of the Aspect First Hypothesis in child Greek by investigating Greek-speaking children’s early comprehension of present, past and future tense morphology as well as the role that lexical aspect plays in the early use of tense morphology. It is suggested that although Greek-speaking children have not yet fully mapped the tense concepts to the correct tense morphology, tense acquisition does not seem to be significantly affected by the aspectual characteristics (i.e. the telicity) of the verb.
In this paper the first results concerning the development of early verb morphology in an L1-English speaking child are presented. Adopting the framework of morphological development of Dressler (Dressler, this volume) the data of a girl from the CHILDES database, Nina of the Suppes corpus, is analysed with regard to the emergence of early verbal categories (e.g. number and person) and their appearance in a first mini-paradigm. In the sessions analysed so far the child Nina has reached an age of 2;2 when the first mini-paradigm emerges.
This paper deals with early verb development (e.g., person, tense) until the emergence of verb-paradigms in two French-speaking children.
I will show the parallelism between the two children in the gradual building of paradigms, despite considerable differences in the rate of development. Individual differences on the other hand will bring me to reconsider the broad category of premorphological rote-learnt forms which already displays some patterning in one of the children's data.
This paper studies the acquisition process of Spanish verbal morphology in a monolingual child. The study focuses on the period of the first 50 verb lemmas. This covers the period from age 1;7 till 1;10.
The data shows that the verb acquisition process of this Spanish child follows three main stages:
1. A lexical stage in which verbs are only acquired as a lexical element.
2. A syntactic stage in which the verb, still contemplated as a non-split word, becomes the main element in the development of thematic and semantic relations.
3. A morphological stage in which verb suffixes begin to be analysed separately. At this stage, the relationship between form and meaning starts and the functional categories linked to the verb (tense, aspect, agreement, mood... ) begin to be acquired. Just at this moment, the first miniparadigms appear, which suggests that the acquisition process of verb morphology has started.
The first two stages are premorphological and cover in our child the period till 1;9. In the last stage, which begins at 1;10, the child enters the protomorphological stage.
The source of the data used in this paper are recordings of conversations with a Lithuanian girl, Rūta. Rūta lives in Vilnius and is the only child in the family. Both parents speak standard Lithuanian without dialectal influences. The recordings were taken on a free basis without a fixed schedule, then transcribed by the mother of the child, double-checked and coded in accordance with CHILDES by the author of the paper. At the moment of writing this contribution the data taken between 1;7-2;5 have been fully processed. Over this period about 34.5 hours of recordings were collected.
While the perilinguistic child is endowed with predispositions for the categorical perception of phonetic features, their adaptation to the native language results from a long evolution from the end of the first year of age up to the adolescence. This evolution entails both a better discrimination between phonological categories, a concomitant reduction of the discrimination between within-category variants, and a higher precision of perceptual boundaries between categories. The first objective of the present study was to assess the relative importance of these modifications by comparing the perceptual performances of a group of 11 children, aged from 8 to 11 years, with those of their mothers. Our second objective was to explore the functional implications of categorical perception by comparing the performances of a group of 8 deaf children, equipped with a cochlear implant, with normal-hearing chronological age controls. The results showed that the categorical boundary was slightly more precise and that categorical perception was consistently larger in adults vs. normal-hearing children. Those among the deaf children who were able to discriminate minimal distinctions between syllables displayed categorical perception performances equivalent to those of normal-hearing controls. In conclusion, the late effect of age on the categorical perception of speech seems to be anchored in a fairly mature phonological system, as evidenced the fairly high precision of categorical boundaries in pre-adolescents. These late developments have functional implications for speech perception in difficult conditions as suggested by the relationship between categorical perception and speech intelligibility in cochlear implant children.
The goal of our current project is to build a system that can learn to imitate a version of a spoken utterance using an articulatory speech synthesiser. The approach is informed and inspired by knowledge of early infant speech development. Thus we expect our system to reproduce and exploit the utility of infant behaviours such as listening, vocal play, babbling and word imitation. We expect our system to develop a relationship between the sound-making capabilities of its vocal tract and the phonetic/phonological structure of imitated utterances. At the heart of our approach is the learning of an inverse model that relates acoustic and motor representations of speech. The acoustic to auditory mappings uses an auditory filter bank and a self-organizing phase of learning. The inverse model from auditory to vocal tract control parameters is estimated using a babbling phase, in which the vocal tract is essentially driven in a random manner, much like the babbling phase of speech acquisition in infants. The complete system can be used to imitate simple utterances through a direct mapping from sound to control parameters. Our initial results show that this procedure works well for sounds generated by its own voice. Further work is needed to build a phonological control level and achieve better performance with real speech.
This paper shows the early development of the first approximately 50 verbs found in the recorded speech production of one Croatian girl. The aim is to analyse and interpret the child's verb development in terms of the distinction of a pre- and a protomorphological phase before modularised morphology in language acquisition (Dressler & Karpf 1995). Furthermore, focus will be laid on the emergence of first verb paradigms.
Our results indicate some differences in the use of aspect between French and Croatian speaking children. In Croatian language children always manage to keep the appropriate aspect, unlike French children. However, the imperfective aspect seems to be better acquired in French children than the perfective aspect. The perfective aspect, the marked form both in French as well as in Croatian, is related to the lexical meaning of the verbs. The acquisition of the Aktionsart in both languages seems to be more a matter of semantics than of morphology. Furthermore, our data suggest the existence of a specific developmental trend in the use of Aktionsart (intensive, iterative and inchoative), which is similar for children speaking Slavic and Romanic languages.
This paper reports results from a series of experiments that investigated whether semantic and/or syntactic complexity influences young Dutch children’s production of past tense forms. The constructions used in the three experiments were (i) simple sentences (the Simple Sentence Experiment), (ii) complex sentences with CP complements (the Complement Clause Experiment) and (iii) complex sentences with relative clauses (the Relative Clause Experiment). The stimuli involved both atelic and telic predicates. The goal of this paper is to address the following questions.
Q1. Does semantic complexity regarding temporal anchoring influence the types of errors that children make in the experiments? For example, do children make certain types of errors when a past tense has to be anchored to the Utterance Time (UT), as compared to when it has to be anchored to the matrix topic time (TT)?
Q2. Do different syntactic positions influence children’s performance on past-tense production? Do children perform better in the Simple Sentence Experiment compared to complex sentences involving two finite clauses (the Complement Clause Experiment and the Relative Clause Experiment)? In complex sentence trials, do children perform differently when the CPs are complements vs. when the CPs are adjunct clauses? (Lebeaux 1990, 2000)
Q3. Do Dutch children make more errors with certain types of predicate (such as atelic predicates)? Alternatively, do children produce a certain type of error with a certain type of predicates (such as producing a perfect aspect with punctual predicates)? Bronckart and Sinclair (1973), for example, found that until the age of 6, French children showed a tendency to use passé composé with perfective events and simple present with imperfective events; we will investigate whether or not the equivalent of this is observed in Dutch.
The comprehension and production of single words involve a variety of processing stages. Which stages need to be accessed differs depending on whether objects (pictures in an experimental environment) or words are supposed to be named. Naming tasks are often employed in psycholinguistic studies in order to provide an insight into the function of mental processes during word production. Differences in naming latencies and naming accuracy between words suggest that the retrieval of some lexical items is easier or more difficult in contrast to others. The relative ease of word retrieval has been found to be strongly influenced by properties of these words, such as familiarity and written or spoken frequency.
Exploring which variables affect naming speed and accuracy will allow gaining more information about the storage and processing of words in general. If a variable has a discernable effect on a specific experimental task, the localization of this effect is of interest for psycholinguistic research. This is because finding the locus of the effect can help specify models of speech production with respect to what processes occur at which stage of lexical retrieval. Additionally, identifying which variables influence language processing is inevitable in order to control for these variables when necessary. Otherwise variance in naming latencies could not be explained by the variable that was to be tested because other, uncontrolled variables could have altered the results.
In dieser Arbeit untersuchen wir, welche nicht-satzwertigen Einheiten 2- bis 3-jährige Kinder ins Nachfeld stellen und aus welchen Gründen sie dies tun. Kindliche Äußerungen können ab der Phase der 'item'-basierten Konstruktionen, in der sie die Satzklammer erwerben, mit dem topologischen Feldermodell analysiert werden. Wir argumentieren dafür, dass Kinder zunächst ein vorläufiges Nachfeld entwickeln, welches sich hinter infiniten Verben oder Verbpartikeln befindet. Am häufigsten finden sich Adverb-, Präpositional- und Nominalphrasen im Nachfeld. Adverbien zeigen Verfestigungstendenzen, sodass wir diese als Konstruktionen beschreiben mit der Funktion, die Äußerung im Kontext zu verorten und/oder dieser Nachdruck zu verleihen. Präpositional- und Nominalphrasen werden aus Gründen der Zeitlichkeit bzw. nicht ausreichender Planung ins Nachfeld gestellt. Die Häufigkeit der Nominalphrasen im Nachfeld nimmt mit zunehmendem Alter ab.