Introduction to Cognitive Science Linguistics Component Syntax and

Introduction to Cognitive Science Linguistics Component Syntax and Semantics Date: 19 th October 2000 Lecturer: Dr Bodomo Department of Linguistics

Keywords • • Syntax the mental lexicon phrase noun phrase (NP) verb phrase (VP) phrase structure sentence structure tree diagram • • • constituent structure functional structure semantics pragmatics morphosyntax-semantics interface • ambiguity

Introduction: theme and objective • Theme – A survey of how linguistic knowledge at the level of syntax and semantics is represented in the minds of speakers of a language. • Objective – an understanding of the basic terms and issues in syntax and semantics/pragmatics – an interface approach: rather than rigidly discussing these issues from phonology, morphology, syntax and semantics, we will look at how syntax interfaces with semantics.

Syntax • deals with the combination of words to form phrases. • What are the principles that determine ways we can or cannot combine some words to form sentences? • For example, why are some of these sentences correct and others wrong? – Who did you see Mary with? – *Who did you see Mary and ? – Ngo 5 heoi 3 Hoeng 1 gong 2 zai 2 ‘I’m going to Aberdeen’ – Heoi 3 Hoeng 1 gong 2 zai 2 – * Hoeng 1 gong 2 zai 2 heoi 3 ngo 5

• It seems that speakers of a language have an internalized knowledge, in the form of rules and constraints, on the basis of which they decide whether or not a particular string of words in their language constitutes a well-formed string. • Syntacticians, or cognitive scientists working on syntax, attempt to capture this knowledge by positing rules. • Consider the situation whereby a speaker of English, Cantonese or Dagaare wants to express the conceptual notion of drinking water in English, Cantonese or Dagaare. • The first step is presumably to search in a database of words in their respective languages for the appropriate words to express the situation. Let us call this the mental lexicon.

The mental lexicon of a language • a database containing a list of all the words in the language, along with information about their grammatical category, how they combine with other words and of course their meaning.

Simplified lexicons of English, Cantonese, and Dagaare (each containing words that would express the conceptual notion of a man having drunk water ) English: ‘The man drank water. ’ drank, verb, trans. ‘having ingested water through the mouth’ man, noun, count, ‘an adult male human being’ the, article, DEF. water, noun, mass ‘a kind of liquid’ Cantonese: • go 3, CL • naam 4 jan 2, noun, count ‘man’ • jam 2, verb, trans. ‘drank’ • soei 2, noun, mass ‘water’ Dagaare: • a , article, DEF. ‘the’ • d , noun, count ‘man • ko , noun, mass ‘wate • la , particle, focus marker • nyu , verb, trans. ‘drinking

Phrase Structure • From the database of lexical items that would form the building blocks of linguistic structure expressing the conceptual notion, the next step is to group the words such that they would express the entities that take part in the action and the action itself. • We would refer to this group of words as phrases, a phrase being defined as a structured group of words. • Phrases have heads, a head of a phrase is the most important word in the phrase. Phrases take their names after the name of their heads. So a noun phrase (NP) is headed by a noun, verb phrase (VP) by a verb, etc. – ‘The man’ is an NP, ‘drank water’ is a VP. Indeed, a VP can contain an NP, water, which just has only one item.

Sentence Structure • words we need to • we are ready to put express a situation are these words to form selected from our complete strings mental lexicon. expressing the conceptual situation. • we have successfully This is the domain of grouped them into sentence analysis. We phrases and units to begin by positing express entities and phrase structure events. rules.

Phrase Structure rules – – – S VP NP V N Art NP + VP V + NP Art + N drank man, water the • With these phrase structure rules and the lexicon attached the native speaker can form or interpret grammatical sentences and reject ungrammatical ones. • (In groups of two, spend at most 3 minutes and come up with phrase rules for Cantonese and Dagaare to express the conceptual situation of a man having drank water. )

A constituent structure diagram in the form of a tree structure S NP VP NP Art The N V N man drank water The first NP functions as the SUBJECT of the sentence, the verb as the PREDICATE and the second NP as the OBJECT. This can be represented in a functional structure diagram

Functional structure diagram PRED ‘drink <SUBJECT, OBJECT>’ TENSE PAST SUBJECT [The man] OBJECT [water] • This is how we represent the syntactic knowledge of speakers of a language for basic sentences. There are however more complex cases. A account of the syntax alone is not enough for an adequate interpretation of sentences that encode concepts, situations and attitudes. We need a level of meaning to achieve this.

Meaning: level of semantics/ pragmatics • What does the sign, brown dog, dog mean? Signifier and signified – Reality, mind, etc • This will be taken care of by semantics and pragmatics

Semantics • Trask (1999: 249) • Crystal (1997: 343) – ‘the branch of linguistics dealing with meanings of words and sentences’. – ‘a major branch of linguistics devoted to the study of MEANING in language’.

Meaning: Level of Semantics • English: a. Chan loves you more than Yan. could mean: b. Chan loves you more than Yan loves you. c. Chan loves you more than Chan loves Yan. • Cantonese: a. me 1 waa 2 ? could mean: b. What did you say ? c. What language ?

Meaning: Level of Pragmatics • Crystal (1997: 301) – ‘the study of language from the point of view of the users, especially of the choices they make, the constraints they encounter in using language in social interaction, and the effects their use of language has on the other participants in an act of communication’. What would brown dog mean in some specialised contexts, cultures, etc. ? • What about a white dove?

Syntax and how it interfaces with other components • Morphosyntax • The syntax-semantics interface

Morphosyntax • There is a close relationship between the structure of words and the structure of sentences. • In some languages it is even difficult to tell whether a particular word formation is a word or a sentence: Swahili (a language of East Africa): Nakupenda is a word that is made up of: Na- ku- Tense/SM you penda love (The item na in this language marks tense and also the subject of a sentence. ) In this language, this word structure can also stand as a sentence, thus: Nakupenda 'I love you'

Morphosyntax (cont. ) In the data above, it is better to analyse this linguistic item both in terms of its morphology and syntax, hence morphosyntax. • Trask (1999: 176) – ‘the area of interface between morphology and syntax’. • Crystal (1997: 250 -251) – grammatical categories or properties for whose definition criteria of morphology and syntax both apply, as in describing the characteristics of words’ –. E. g. NUMBER in nouns constitute a morphosyntactic category: • number contrasts affect syntax (e. g. singular subject requiring a singular verb) • they require morphological definition (e. g. add -s for plural)

The Syntax-semantics Interface • Besides studying the formal structure of sentences it is also important to study how parts of the sentence contribute to an interpretation of the whole sentence. • Such is especially the case with syntactically ambiguous sentences: – Chan loves you more than Yan. • Could mean: i. Chan loves you more than Yan loves you. ii. Chan loves you more than Chan loves Yan. • [Class should look for more syntactic ambiguities in English, Cantonese, and any other language]

Conclusion • We have briefly shown how tacit linguistic knowledge can be represented at various levels of phonology, phonology morphology, morphology syntax, syntax semantics, semantics pragmatics, and their interfaces, including morphophonology, morphosyntax and the syntax-semantics interrelationships • In the next lecture/topic, we shall look closely at how this linguistic knowledge representation can be formalised into an algorithm, a computational procedure for processing this linguistic knowledge.

References • Crystal, David. 1997. A Dictionary of Linguistics and Phonetics. Blackwell Publishers. • Lepore, Ernest and Zenon Pylyshyn (eds). 1999. What Is Cognitive Science. Blackwell Publishers. (especially chapters 10, 11, 12, and 13). • Stillings, Neil and others. 1995. Cognitive Science: An Introduction. MIT Press. (especially chapters 6). • Trask, R. L. 1993. A Dictionary of Grammatical Terms in Linguistics. Routledge. • Wilson, R. and Frank C. Neil (eds) 1999. The MIT Encyclopedia of the Cognitive Sciences. MIT Press