It is recognized in this study that teacher s personality affects the quality of the teacher- student interactions and potentially has the power to determine the realization of positive relationships in the classroom. It is important for teacher - educators responsible for curriculum development in the teachers training colleges to understand that teacher-trainees perceptions and interpretations of their roles in the classroom influence their attitude and behaviors in the teaching - learning process. In recognition of the aforementioned ideas this present study examined two Locus of control instruments: The Locus of Teachers Control instrument which could be utilized in the Caribbean education system to assess teachers perceptions about who or what influences important outcomes in the teaching-learning process, and Nowicki-Strickland adult instrument for determining an individual s perceptions about who or what influences important outcomes in their lives. This study sheds some light on the appropriateness of the two instruments and provides a platform for informing professional development of teachers within the Jamaican context.