Usage patterns
態度を変えるto change one's attitude
He suddenly changed his attitude.
態度に出るto show in one's attitude/demeanor
His dissatisfaction showed in his attitude.
態度を改めるto correct or improve one's attitude
He corrected his attitude after being warned by the teacher.
〈事〉への態度one's attitude toward a matter
His attitude toward work is serious.
Expressions
態度を取るtake an attitude; take a stance; commit oneself; assume a position