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Government and binding

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Government and binding

Government and binding is a theory of syntax and a phrase structure grammar (as opposed to a dependency grammar) in the tradition of transformational grammar developed principally by Noam Chomsky in the 1980s.[1][2][3] This theory is a radical revision of his earlier theories[4][5][6] and was later revised in The Minimalist Program (1995)[7] and several subsequent papers, the latest being Three Factors in Language Design (2005).[8] Although there is a large literature on government and binding theory which is not written by Chomsky, Chomsky's papers have been foundational in setting the research agenda.

The name refers to two central subtheories of the theory: government, which is an abstract syntactic relation, and binding, which deals with the referents of pronouns, anaphors, and referential expressions. GB was the first theory to be based on the principles and parameters model of language, which also underlies the later developments of the Minimalist Program.

Government

The main application of the government relation concerns the assignment of case. Government is defined as follows:

A governs B if and only if

  • A is a governor and
  • A m-commands B and
  • no barrier intervenes between A and B.

Governors are heads of the lexical categories (V, N, A, P) and tensed I (T). A m-commands B if A does not dominate B and B does not dominate A and the first maximal projection of A dominates B. The maximal projection of a head X is XP. This means that for example in a structure like the following, A m-commands B, but B does not m-command A:

In addition, barrier is defined as follows:[9] A barrier is any node Z such that

The government relation makes case assignment unambiguous. The tree diagram below illustrates how DPs are governed and assigned case by their governing heads:

File:HeSmashedTheVase1.png

Another important application of the government relation constrains the occurrence and identity of traces as the Empty Category Principle requires them to be properly governed.

Binding

Binding can be defined as follows:

  • An element α binds an element β if and only if α c-commands β, and α and β corefer.

Consider the sentence "Johni saw hisi mother." which is diagrammed below using simple phrase structure rules.

File:Government and Binding Theory basic tree.png

The NP "John" c-commands "his" because the first parent of the NP, S, contains "his". "John" and "his" are also coreferential (they refer to the same person), therefore "John" binds "his".

On the other hand, in the ungrammatical sentence "*The mother of Johni likes himselfi", "John" does not c-command "himself", so they have no binding relationship despite the fact that they corefer.

The importance of binding is shown in the grammaticality of the following sentences:

  1. *Johni saw himi.
  2. Johni saw himselfi.
  3. *Himselfi saw Johni.
  4. *Johni saw Johni.

Binding is used, along with particular binding principles, to explain the ungrammaticality of those statements. The applicable rules are called Binding Principle A, Binding Principle B, and Binding Principle C.

  • Principle A: an anaphor (reflexive or reciprocal, such as "each other") must be bound in its governing category (roughly, the clause).

Since "himself" is not c-commanded by "John" in sentence [3], Principle A is violated.

  • Principle B: a pronoun must be free (i.e., not bound) within its governing category (roughly, the clause).

In sentence [1], "him" is bound by "John", violating Principle B.

  • Principle C: an R-expression must be free (i.e., not bound). R-expressions (e.g. "the dog" or "John") are referential expressions: unlike pronouns and anaphora, they independently refer, i.e., pick out entities in the world.

In sentence [4], the first instance of "John" binds the second, violating Principle C.

Note that Principles A and B refer to "governing categories"--domains which limit the scope of binding. The definition of a governing category laid out in Lectures on Government and Binding[1] is complex, but in most cases the governing category is essentially the minimal clause or complex NP.

Further reading

  • Liliane Haegeman (1994). Introduction to Government and Binding Theory (Second Edition). Blackwell.

References

External links

  • A step-by-step introduction to the Government and Binding theory of syntax
  • Introduction to GB
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