The Thorndike-Barnhart Dictionary entry for the term:
Dispositions. Qualities that characterize a person as an individual: the controlling perceptual (mental, emotional, spiritual) qualities that determine the person’s natural or usual ways of thinking and acting.
The National Council for Accreditation in Teacher Education (NCATE) Online Glossary has the following definition:
Dispositions. The values, commitments, and professional ethics that influence behaviors toward students, families, colleagues, and communities and affect student learning, motivation and development as well as the educator’s own professional growth. Dispositions are guided by beliefs and attitudes related to values such as caring fairness, honesty, responsibility and social justice. For example, they might include a belief that all students can learn, a vision of high and challenging standards, or a commitment to a safe and supportive learning environment.
The Council for the Accreditation of Educator Preparation (CAEP) Standards for Educator Preparation states:
CANDIDATES DEMONSTRATE KNOWLEDGE, SKILLS, AND PROFESSIONAL DISPOSITIONS FOR EFFECTIVE WORK IN SCHOOLS.
Teacher candidates and completers:
• know subject matter (including pedagogical content knowledge) and pedagogy.
• teach students in schools effectively and demonstrate their impact on P-12 student learning.
• nurture the academic and social development of all students through professional dispositions such as caring, fairness and the belief that all students can learn.
• use technology to enhance their teaching, classroom management, communications with families and assessment of student learning.
• work collaboratively with the community and other school personnel to support student learning.
• engage in ongoing learning that improves practice.
• know the professional knowledge for their field (e.g., educational leadership or school).