An occupational
therapy practitioner is commonly referred to as either a
Registered Occupational Therapist (OTR) or a Certified
Occupational Therapy Assistant (COTA), each a different
level of practitioner. The 0TR has more extensive
education and training in both breadth and depth than COTA,
who works under the supervision of an OTR. Often the
OTR is referred to as the "professional" level and
the COTA is referred to as the "technical" level
of practice.