a study of relationship between high school principals' brain quadrant dominance and their performance effectiveness

the purpose of the research was to examine the relationship between educational administrators' brain quadrant dominance and the level of their performance effectiveness. by using stratified-random sampling method, 103 managers and 412 teachers were selected as the study sample; they were recruited from high schools in mashhad in 2008-2009 academic year. herrmann brain dominance instrument, with 60 items, and parsons performance effectiveness questionnaire, with 35 items, were used for data collection. the findings showed a significant, positive relationship between the dominance of a, c and d styles of brain quadrants and the level of performance effectiveness (p < 0.01). the results also revealed that b brain quadrant dominance could not predict the level of performance