Twyla signs up for an advanced economics class her first semester in college, and is told by everyone that the teacher is hard and that almost nobody gets a good grade in this course. "I don't about the teacher," Twyla says. "I am smart and I can work hard enough to succeed at anything!" Twyla has a(n) ________ locus of control. internal locus of control primary appriasal secondary appraisal external locus of control