First Author:   Ahmad Zubaidi Baharumshah Universiti Putra Malaysia baharumshah@yahoo.com   Department of Economics, Faculty of Economics and Management, Universiti Putra Malaysia Serdang, 43400, Malaysia   603-89467597(Phone) 603-89467597(Fax) Second Author: Siew-Voon Soon Universiti Putra Malaysia sv_soon2001@yahoo.com   Department of Economics, Faculty of Economics and Management, Universiti Putra Malaysia Serdang, 43400, Malaysia   603-89467730(Phone) 603-89486188(Fax)