• Asad Ali

  Author

• Qaisar Jabbar

  Author

• Nazir Ahmad Malik

  Author

The aim of present study is to refute „Functional Head Constraints‟ (Hedi M. Belazi Edward J. Rubin Almeida Jacqueline Toribio, 1994) on theoretical grounds. It envisages that code switching is disallowed within functional heads (C, T and D) and complement of the functional heads (TP, VP and NP). For this purpose, the empirical data demonstrates that CS freely occurs within functional head and its complement. Employing Minimalist Program (1995) as theoretical framework, it states that Faculty of Human language (FoL) is comprised of two components: invariant Computational System of Human language (CHL) and language dependent Lexicon. Lexicon is a store-house of categories: Lexical and Functional. They are bundles of morphologically encoded features. (Marantz, 1993) CHL computes derivation from top to down on the basis of these features to satisfy the interface conditions FI-Full Interpretation (Chomsky, 1995). Under the assumption of FHC, if we assume that functional head determines its respective complement through the same process as it subscribed in monolingual; it means that CHL is not unanimous about categories. In this way, the status of Universality, invariant and blindness about (CHL) has been violated and no functional head constraint no fusion linearization expression has been observed in code switching pairs Urdu-English.

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