Volume 8 Issue 1 (2010)
DOI:10.1349/PS1.1537-0852.A.359
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Positing Grammatical Categories:
Linguists’ vs. Speakers’ Generalizations
Comment on ‘Semantic Maps and the Identification of
Cross-Linguistic Generic Categories: Evidentiality and its Relation to Epistemic
Modality’ by Kasper Boye (2010)
Sonia Cristofaro
University of Pavia
Boye (2009) argues for a particular type of
cross-linguistically valid grammatical categories, which he calls generic
categories. Generic categories are categories encompassing conceptually related
notions, e.g. present, past, and future, or epistemic and deontic. These can be
described in terms of some more abstract notion that is used to define the
category, such as tense or modality. Generic categories are commonly used in
linguistic analysis, but a great deal of controversy exists about what exact
generic categories should be posited, for instance whether or not evidentiality
can be regarded as a category in its own right. Boye argues that this is because proposals about
generic categories are usually based on arbitrary notional criteria. Instead, generic categories should
correspond to linguistically significant generalizations, that is, they should
capture some organizing principle in the grammar of individual languages. In
fact, Boye argues, generic categories are necessary in linguistic analysis
precisely because they appear to play a role in a number of grammatical
phenomena cross-linguistically. Claims about generic categories should be based
on semantic maps, because the fact that the notions encompassed by a generic
category cover a continuous region on a semantic map is evidence that the
category corresponds to a linguistically significant rather than a linguist's
arbitrary generalization.
In what follows, I will argue that Boye's proposal, along with much of
the current literature on grammatical categories, does not distinguish between
two possible senses of the notion of grammatical category, and that this
distinction is essential to a proper understanding of what evidence can actually
be used to posit individual categories, including evidence from semantic maps.
In principle, grammatical categories can be conceived of either as a
linguist's classification device, or as components of the grammatical
organization of individual languages, as presumably specified at some level of
mental representation. In the first sense, individual categories, e.g. tense or
evidentiality, are labels indicating that a number of linguistic elements share
some selected property. This is a descriptive generalization over observed
grammatical patterns, which does not imply that the relevant elements form a
class in a speaker's mental representation. In the second sense, grammatical
categories are classes that have psychological reality, that is, they exist in a
speaker's mind independently of a linguist's description of observed grammatical
patterns.
Boye (2010:2) claims that he regards generic categories as a linguist's
theoretical construct rather than cognitive entities with ontological reality.
This suggests that he is using the notion of generic category in the descriptive
sense, that is, to classify particular grammatical patterns rather than to make
hypotheses about a speaker's mental representation. In this case, however, what
generic categories (or grammatical categories in general, for that matter)
should be posited for a language is basically a conventional issue which depends
on what parameters are selected to define individual categories, and any
parameter can be chosen provided that it is applied consistently.
Boye's claim that generic categories should correspond to linguistically
significant generalizations implies that positing particular generic categories
should not be a matter of convention, and that these categories should rather
play a role in the grammar of individual languages. There is, however, only one
possible sense in which a category can be assumed to exist in the grammar of a
language independently of a linguist's descriptive convention, namely, the
category must have some form of mental reality for the speakers of the language.
This may be either because the category is part of a speaker's mental
representation of individual constructions, or because it plays a role in the
diachronic processes that lead speakers to create particular contructions, even
if it is not part of a speaker's mental representation of already attested
constructions (see Dryer 1997, 2006 and Cristofaro 2010, to appear for detailed
discussion of this issue).
Thus, if generic categories are assumed to capture linguistically
significant generalizations, they must be assumed to have some form of mental
reality. This assumption has been explicitly rejected in previous proposals on
the topic by Bybee (1986) and Bybee, Perkins and Pagliuca (1994). Bybee and her
associates observe that forms encoding meanings within the same semantic domain
(e.g. tense, aspect, or modality) typically display different distributional
properties, and conversely, forms with the same distributional properties may
not express meanings in the same semantic domain. This, they argue, is evidence
that there is no psychological organizing principle of language which is based
on some generic category encompassing all of the notions in a particular
semantic domain (although they do use generic categories to classify the forms
encoding these notions). The question then arises as to whether or not the
grammatical phenomena discussed by Boye really provide evidence that particular
generic categories are somehow part of the mental representation of the speakers
of the relevant languages.
Boye's first argument for generic categories is that, in a number of
languages, forms encoding notions within the same generic category do indeed
display the same distributional properties (for example, Ngyambaa evidential
clitics are characterized by specific ordering restrictions). These properties
single out the forms as a separate class within the grammar of the language,
which can be taken as evidence that the relevant generic categories (e.g.
evidentiality) play a role in that grammar.
The fact that elements within the same semantic domain have the same
distributional properties, however, does not mean that these properties are
related to the corresponding generic categories. For example, it is well known
that different forms within the domain of tense, aspect, or modality may all
develop from verbs (Bybee, Perkins and Pagliuca 1994, among many others). As a
result, these forms may all be subject to ordering restrictions that reflect the
position that verbs occupy or used to occupy in the clause. These restrictions
will be different from those pertaining to forms that originated from sources
other than verbs, and they will single out the relevant forms as a distinct
grammatical class in the language. This, however, is due to the position of
verbs in the clause, not any generic category of tense, aspect, or modality that
can be used to describe the semantics of the forms.
Such examples, which could easily be multiplied, do not exclude that
particular grammatical phenomena may actually be based on generic categories.
The point is, however, that the fact that forms within the same semantic domain
have the same distributional properties is not per se evidence for the
corresponding generic categories, because the properties may be independent of
these categories. Whether and in what ways generic categories play a role in
particular grammatical phenomena should rather be demonstrated on a case-by-case
basis.
Boye's second argument for generic categories presents a similar
problem. The fact that particular semantic maps (e.g. those for indefinite
pronouns) encompass notions that can be described in terms of generic
categories, Boye argues, is evidence that these categories play a role in the
grammar of the relevant languages. From this, he concludes that semantic maps
can be used to test claims about generic categories, because the members of a
generic category should always cover a continuous region on a semantic
map.
Yet, the processes that give rise to the multifunctionality patterns
described by semantic maps may be completely independent of any generic category
that can be used to describe the relevant meanings. For instance, in several
languages, the same forms are used to express a variety of root, deontic, and
epistemic meanings, as described in the semantic maps for modality (Bybee,
Perkins and Pagliuca 1994; van der Auwera and Plungian 1998). This has been
accounted for in terms of metonymization processes that take place at the
contextual level and trigger the extension of individual forms from one meaning
to another. For example, forms expressing deontic possibility are extended to
the expression of deontic necessity because the latter meaning may be inferred
from some highly particularized contexts where the forms are originally used.
Likewise, expressions of deontic necessity develop meanings of epistemic
necessity because these meanings may sometimes be inferred from contexts
involving deontic necessity (Traugott and Dasher 2005: chap. 3). If this account
is correct, the fact that the same forms express different modal meanings is
unrelated to any generic category of modality, possibility or necessity, and
therefore cannot be taken as evidence for such categories.
The fact that the multifunctionality patterns described by semantic maps
may originate from processes of diachronic extension independent of generic
categories also poses a problem for the idea that semantic map continuity should
be a necessary criterion for generic categories. Semantic map continuity
reflects encoding of the relevant meanings by the same forms. However, since
this may be due to factors other than the status of these meanings with regard
to a postulated generic category, semantic map continuity may actually have no
theoretical relevance for that category, so there is no reason why it should be
regarded as a necessary criterion for the category.
Also, even if a particular generic category is assumed to be part of the
grammar of a language, this does not imply that individual forms will be
extended from one meaning to another within the category. For instance, to take
Boye's example, the fact that in some languages forms encoding various
evidential meanings all share particular structural properties may in principle
be taken as evidence that there is a category of evidentiality that plays a role
in the grammar of the language, but this does not imply that individual forms
will be extended from one evidential meaning to another. As a result, a generic
category may not give rise to any multifunctionality pattern, which means that
the category will not correspond to any attested semantic map, and the criterion
of semantic map continuity will be impossible to apply.
Boye's proposal captures the fact that, in a number of languages,
conceptually related notions may be encoded in the same way, either in the sense
that are encoded by the same forms (as described by semantic maps) or in the
sense that they are encoded by forms that share some distributional property.
This pattern can be described in terms of particular categories (generic
categories, that is), and from this Boye assumes that these categories play a
direct role in the grammar of the relevant languages. This implies that they
have some form of mental reality for the speakers of the language (though this
point is not addressed in Boye's analysis). Yet, as the categories cannot
actually be used to account for the pattern, there is no evidence that they are
but a linguist's descriptive device.
Boye's proposal is representative of a widespread approach to
grammatical categories, one in which two distinct levels of analysis, the
description of empirically observed grammatical patterns and the (often
implicit) formulation of hypotheses about the organization of a speaker's mental
representation, are combined together. Grammatical categories are posited
because they represent an effective way to describe some observed grammatical
pattern, and from this linguists assume that they are part of a speaker's mental
representation.
This may not be apparent in the functional-typological literature, where
(in contrast to generatively-oriented theories of grammar) categories are
usually posited in order to describe some observed grammatical pattern, and no
explicit assumption is usually made as to their status in terms of mental
representation. Linguists working within the functional-typological approach,
however, often ask questions such as whether or not some category should be
assumed to have some particular property, whether or not some construction
instantiates some particular category, or (as in Boye's case) what categories
can actually be assumed to play a role in the grammatical organization of
individual languages (see Haspelmath 2007 and Cristofaro 2010 for detailed
discussion of this point). Such questions imply that grammatical categories are
somehow assumed to exist independently of a linguist's description, that is,
presumably, at some level of mental representation.
Likewise, there has been considerable debate within the typological
community about the cross-linguistic and cross-constructional validity of
grammatical categories. In particular, Dryer (1996, 1997) and Croft (2001) have
argued that, contrary to what is standardly assumed in most of the literature on
the topic, grammatical categories are language-specific and
construction-specific rather than cross-constructionally and
cross-linguistically valid. This is because, since the categories that can be
defined for different languages and constructions display different grammatical
properties, these languages and constructions cannot be assumed to have the same
categories.
In this case too, particular categories (language-specific and
construction-specific categories, that is) are posited based on the grammatical
patterns attested in the world's languages, and they are assumed to play a role
in the grammar of individual languages, that is, to have some form of mental
reality for the speakers of the language (see Dryer 1997:134 for an explicit
acknowledgement of this point).
Yet, the grammatical patterns attested in the world's languages provide
evidence about the distribution of particular grammatical features, not evidence
about a speaker's mental representation (Croft 1998, Haspelmath 2004, Cristofaro
2010). Individual grammatical patterns are in fact compatible with various types
of mental representation. For example, the idea that grammatical categories are
language-specific and construction-specific is crucially based on the fact that
the categories that can be posited for different languages and constructions
display non-overlapping properties. Typically, however, these categories also
display a number of overlapping properties (Dryer 1997, Croft 2001, among many
others). If the non-overlapping properties are included within a speaker's
mental representation of the various categories, these will have different
representations for different languages and constructions, i.e. they will be
language-specific and construction-specific. In principle, though, it could also
be the case that a speaker's mental representation of the various categories
only includes the properties that these categories share across different
languages and constructions, while the non-overlapping properties are
represented independently of the category as such (for example, at a separate
level of clause structure, as is argued in Baker 2003). In this case, individual
categories would have the same representation for different languages and
constructions, i.e. they would be cross-linguistically and
cross-constructionally valid (see Cristofaro 2010 and to appear for detailed
discussion of this issue).
Also, individual grammatical patterns arguably originate from principles
that are active at some level of mental representation, and lead speakers to
create the constructions involved in the pattern. However, the grammatical
patterns only provide evidence about the distribution of particular
constructions, not about what principles gave rise to these constructions. For
example, semantic maps show that the world's languages display recurrent
multifunctionality patterns, but this provides no evidence about how these
patterns originated, e.g. whether they originated from metaphorical associations
between different meanings or from processes of metonymization in specific
contexts. Likewise, a number of correlations exist between different word order
patterns, but this does not tell us anything about what principles are
responsible for cooccurrence of the relevant patterns, and individual
correlations are compatible with several principles. For example, the well-known
correlation between the order of adposition and noun and the order of possessor
and possessee has been argued to be due either to grammaticalization processes
whereby possessive constructions are reanalyzed as adpositional constructions,
or to a principle whereby speakers tend to maximize structures that are easy to
process (see, most recently, Dryer 2006).
All this means that the way in which linguists describe observed
grammatical patterns may not match a speaker's mental representation, both in
the sense that the description may not correspond to any generalization that
speakers make over the relevant constructions, and in the sense that it may not
correspond to principles that lead speakers to create these constructions. It
follows that, if linguists generalize over an observed grammatical pattern by
positing particular categories, whether or not these categories have mental
reality cannot be decided based on the pattern as such. Rather, there should be
psychological evidence that the categories correspond to generalizations that
are actually made by speakers. In principle, this evidence could be of two
types: either evidence that particular categories correspond to synchronic
generalizations which speakers make over the grammatical patterns attested in
the language, or evidence that these categories correspond to generalizations
which lead speakers to create particular constructions. At the present state of
our knowledge, these two types of evidence are both scarce, for very little is
yet known about the synchronic organization of a speaker's mental
representation, and the precise mental mechanisms that lead to the creation of
novel constructions are still under dispute in many cases (see e.g. Bybee 1988
and Aristar 1991 on the development of word order patterns, or Heine, Claudi and
Hünnemeyer 1991:65‑78 on the role of metaphor vs. metonymization in
grammaticalization phenomena). A central methodological question in addressing
the issue of grammatical categories, and one that has been largely overlooked in
the current practice, is however to properly identify what generalizations
(descriptive generalizations as opposed to generalizations about a speaker's
mental representation) can be made based on the available evidence. To this end,
it is essential to distinguish between three levels of analysis: the description
of observed grammatical patterns, the factors that may have shaped these
patterns, and the ways in which these patterns may possibly be represented in a
speaker's mind.
References
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Author’s contact
information:
Sonia Cristofaro
Dipartimento di Linguistica
Università di Pavia
Strada Nuova 65
27100 Pavia
Italy
sonia.cristofaro@unipv.it
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