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words, the most likely alternative orders kept the verb in the same position and reversed the
position of subject and object SVO was also a very common alternative order to both VSO
(universal 6) and SOV (this is the non-rigid SOV type). The phenomenon can be accounted
for by the dominance of SV and VO orders. Non rigid VSO languages allow subjects to shift
to their dominant position. Languages with basic SVO order are the least likely to have
alternative word order: i.e. they are the Languages type that is most likely to have rigid
declarative clause word order.
More detailed investigation of actual texts in many languages has revealed that word
order is more flexible in more languages than was previously imagined. Close attention has
been paid to “Free word order languages” by which is meant, “purely discourse determined
“clause constituent order and sometimes also free noun phrase constituent order. (Hale 1983;
Heath 1986; Mlithun 1987; D.Payne 1987). The study of typological patterns of word order
variation is a relatively new area and will turn out to increasingly important in typological
word order research.
The concept of an implicational universal has had its greatest impact in the area of
word order. Although broader theoretical concepts have been invoked to account for
typological patterns of word order, implicational universals still remain a basic unit of
typological analysis. Implicational universals of word order illustrate the basic elements of
the typological method in their simplest form. The first step is the enumeration of logically
possible language types by the structural parameters involved, illustrated by the tetrachoric
table. The second step is the discovery of the empirical distribution of attested and unattested
types, illustrated by the pattern of gaps in a tetrachoric (or larger) table. The third step is
developing a generalization that (1) restricts variation in language types while excluding the
unattested types and (2) reveals a relationship between otherwise logically independent
grammatical parameters
—
in this case the implicational relationship. At this point, typologists
from Greenberg onward have observed more far-reaching relationships between the word
order parameters, such as harmony and dominance, and then could be captured by simple
implicational universals. The final step in the analysis is to seek a deeper (possibly external)
explanation for the relationship, such as heaviness, mobility and the various proposals for
explaining the existence of harmony.
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