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Actually, the title should include intralinguistic variation along with the interlinguistic one. For variation within one and the same language is the thing which directly presents itself to the observation while it still remains to be demonstrated that phenomena in different languages can be regarded as variants to be assigned to one and the same invariant principle. There are two senses in which the terms of variant, variation are used in the following remarks: one, which has just been mentioned, concerns the assignment of variants to some definite invariant. The other implies the possibility of gradient transitions and opposes the notions of discreteness and of yes-or-no. I shall not try here to reconcile these two senses and I trust that what I intend to show will become intelligible nevertheless. Henri Delacroix (1924:126f) has reformulated an old hypothesis which seems worth exploring in connection with the search for language universals: "Une langue est une variation historique sur le grand thème humain du langage." It remains to be seen what "le grand thème" or rather "les grands thèmes" are about and what particular language-specific properties could be shown to be variants of one and the same theme. One such major theme which we shall now investigate is the interrelation between, on one side, a word or a sequence of words, and, on the other, a sentence. As this for us is not only a syntactic but also a semantic problem, we might rephrase the anti thesis as that between a term or sequence of terms and a proposition. Two alternative views on the nature of this interrelation seem conceivable: A. The interrelation is yes-or-no, i. e. an element or a string of elements either constitutes a term (sequence of terms) or a proposition. B. The interrelation is of gradient nature, i. e. we find intermediary stages. Both alternatives are appropriate, but under different circumstances.
Three quantificational approaches to the measurement of lexical descriptivity are proposed, based on: the semantic sum of the parts of a lexeme is equal to the whole, paraphrase-term and term-paraphrase congruence, explicitness of semantic elements of a construction. Combination of all possible values into tripartite sets and then into equipollent groups results in a system composed of 12 grades. This system was tested with a semantic domain of the Finnish lexicon: body-part terms. The descriptivity indices for each lexical item were correlated with natural divisions of the body, construction-motivation types (form, function, location), grammatical construction types (endo- and exocentric compounds, derived forms, metaphors), and loanwords. These comparisons result in a number of grade profiles whereby specific descriptivity grades are characteristically associated with one or more types of body section, construction motivation, and grammatical construction. Diachronic and synchronic evidence points overwhelmingly to a process of semantic narrowing in the development of descriptive words and labels from phrases or sentences.
I characterize optimal monetary and fiscal policy in a stochastic New Keynesian model when nominal interest rates may occasionally hit the zero lower bound. The benevolent policymaker controls the short-term nominal interest rate and the level of government spending. Under discretionary policy, accounting for fiscal stabilization policy eliminates to a large extent the welfare losses associated with the presence of the zero bound. Under commitment, the gains associated with the use of the fiscal policy tool remain modest, even though fiscal stabilization policy is part of the optimal policy mix.
This chapter aims to provide a hands-on approach to New Keynesian models and their uses for macroeconomic policy analysis. It starts by reviewing the origins of the New Keynesian approach, the key model ingredients and representative models. Building blocks of current-generation dynamic stochastic general equilibrium (DSGE) models are discussed in detail. These models address the famous Lucas critique by deriving behavioral equations systematically from the optimizing and forward-looking decision-making of households and firms subject to well-defined constraints. State-of-the-art methods for solving and estimating such models are reviewed and presented in examples. The chapter goes beyond the mere presentation of the most popular benchmark model by providing a framework for model comparison along with a database that includes a wide variety of macroeconomic models. Thus, it offers a convenient approach for comparing new models to available benchmarks and for investigating whether particular policy recommendations are robust to model uncertainty. Such robustness analysis is illustrated by evaluating the performance of simple monetary policy rules across a range of recently-estimated models including some with financial market imperfections and by reviewing recent comparative findings regarding the magnitude of government spending multipliers. The chapter concludes with a discussion of important objectives for on-going and future research using the New Keynesian framework.
The two papers included in this volume have developed from work with the CHILDES tools and the Media Editor in the two research projects, "Second language acquisition of German by Russian learners", sponsored by the Max Planck Institute for Psycholinguistics, Nijmegen, from 1998 to 1999 (directed by Ursula Stephany, University of Cologne, and Wolfgang Klein, Max Planck Institute for Psycholinguistics, Nijmegen) and "The age factor in the acquisition of German as a second language", sponsored by the German Science Foundation (DFG), Bonn, since 2000 (directed by Ursula Stephany, University of Cologne, and Christine Dimroth, Max Planck Institute for Psycholinguistics, Nijmegen). The CHILDES Project has been developed and is being continuously improved at Carnegie Mellon University, Pittsburgh, under the supervision of Brian MacWhinney. Having used the CHILDES tools for more than ten years for transcribing and analyzing Greek child data there it was no question that I would also use them for research into the acquisition of German as a second language and analyze the big amount of spontaneous speech gathered from two Russian girls with the help of the CLAN programs. When in the spring of 1997, Steven Gillis from the University of Antwerp (in collaboration with Gert Durieux) developed a lexicon-based automatic coding system based on the CLAN program MOR and suitable for coding languages with richer morphologies than English, such as Modern Greek. Coding huge amounts of data then became much quicker and more comfortable so that I decided to adopt this system for German as well. The paper "Working with the CHILDES Tools" is based on two earlier manuscripts which have grown out of my research on Greek child language and the many CHILDES workshops taught in Germany, Greece, Portugal, and Brazil over the years. Its contents have now been adapted to the requirements of research into the acquisition of German as a second language and for use on Windows.
Defined as a general inner-linguistic function, modality pervades language and there can thus be no strictly nonmodal predicative expressions. We shall, however, in what follows, keep to grammatical tradition and exclude declarative and interrogative sentences in the indicative mood from consideration. Although a thorough study of the development of modal negation should prove most rewarding, we must renounce such an attempt out of space limits. […] [W]e shall be concerned with the formal linguistic devices employed by the child for expressing modality in various languages and the functions these serve, i.e. how they are used. Only by the conjoint study of form and function can one hope to arrive at a fair understanding of how the modalizing function develops in the ontogenesis of language.
I shall use the precise term 'interlinear morphemic translation (IMT) to designate the object of this study. [...] An IMT is a translation of a text in a language L1 to a string of elements taken from L2 where, ideally, each morpheme of the L1 text is rendered by a morpheme of L2 or a configuration of symbols representing its meaning and where the sequence of the units of the translation corresponds to the sequence of the morphemes which they render. [...] An IMT is needed whenever it is essential that the reader grasp the grammatical structure of the L1 text but is presumed to be so unfamiliar with L1 that he will not be able to do so merely with the aid of a normal translation and the context in which the text is cited. [...] The primary aim of an IMT is to make the grammatical structure of the L1 text transparent. The textual fluency of the IMT by standards of the L2 grammar is a subordinate aim at best.
Studies of syntax in first language acquisition have so far concentrated on the propositional side of the sentence, i.e. on the occurrence and interplay of semantic roles like agent, benefactive, objective, etc. and their syntactic expression. The modality constituent, however, has received little attention in the study of child language. This may be due in part to the impetus more recent research in this field has received from studies of the acquisition of English, a language with poor verb morphology as compared to synthetic languages. The research to be presented in this paper is concerned with an early stage of the acquisition of Modern Greek as a first language, a language with a particularly rich verb morphology. Since modality, aspect, and tense are obligatorily marked on the main verb in Mod. Greek, this language offers an excellent opportunity for studying the development of these fundamental categories of verbal grammar at an earlier stage than in more analytic languages. [...] As this paper is concerned with the semantic categories of verbal grammar mentioned above as weIl as with their formal expression, only utterances containing a verb will be considered. For reasons of space we shall further limit ourselves to those utterances containing a main verb. Such utterances divide into two classes, modal and non-modal. [...] In spite of Calbert's claim (Calbert 1975) that there are no strictly non-modal expressions, affirmative and negative statements as well as questions not containing a modal verb will be considered as non-modal. As will be shown below, modal and non-modal expressions are formally differentiated at the stage of language acquisition studied.
In my paper "Thesen zum Universalienprojekt" (1976) I mention two complementary procedures for discovering language universals: 1. The investigation of the dimensions and principles whose existence is necessitated by the communicative function of language; 2. The development of a formal language in which all syntactic rules are explicitly formulated and in which all syntactic categories are defined by their relation to a minimally necessary number of syntactic categories. Since the first procedure is treated in many of the other papers of this volume, I wish to discuss the role of formal methods in the research of language universals. As an example I want to take the dimensions of determination and show how expressions denoting concepts are modified and turned into reference identifying expressions. There is a general end a specific motivation for the introduction of formal methods into linguistics. The general motivation is to make statements in linguistics as exact and verifiable as they are in the natural sciences. The specific motivation is to make the grammars of various languages comparable by describing them with the same form of rules. The form has to be flexible enough to describe the phenomena of any possible natural language. All natural languages have in common that they may potentially express any meaning. The flexibility of the form of grammatical rules may therefore be attained, if syntactic rules are not isolated from the semantic function they express and syntactic classes are not defined merely by the relative position of their elements in the sentence, but also by the communicative function their elements fulfill in their combination with elements of other classes.
Montague (1974) has shown that this flexibility may be attained by using the language of algebra combined with categorial grammar. Algebraic systems have been developed by mathematicians to model any systems whose operations are definable. Montague does not merely use the tools of mathematics for describing the features of language, but regards syntax, semantics and pragmatics as branches of mathematics. One of the advantages of this approach is that we may apply the laws developed by mathematicians to the systems constructed by linguists for the description and explanation of natural language.