Roumie is known by his employees as the bulldog, as he demonstrates a devoted single-mindedness and complete inflexibility in how work gets done. Even if the employees might suggest a faster or more efficient way of getting things done, his closed-mindedness is the hallmark indicator of his managerial decision-making style. He is famous for saying, "This is how it's done." Which concept best describes Roumie's personality characteristic? Introversion Dependability Dogmatism Internal locus of control