The First Psychology Lab in the U.S. In 1883, Wundt's student G. Stanley Hall created the first experimental psychology lab in the United States at John Hopkins University. This helped mark the establishment of psychology in the U.S. and contributed to the further growth of the field.
So an accurate diagnosis is important. Osteoarthritis is the most common form of arthritis. Rheumatoid arthritis affects about one-tenth as many people as osteoarthritis. The main difference between osteoarthritis and rheumatoid arthritis is the cause behind the joint symptoms.Osteoarthritis is caused by mechanical wear and tear on joints. Rheumatoid arthritis is an autoimmune disease in which the body's own immune system attacks the body's joints.heumatoid arthritis affects about one-tenth as many people as osteoarthritis. The main difference between osteoarthritis and rheumatoid arthritis is the cause behind the joint symptoms.
Two of the most common forms of arthritis are osteoarthritis and rheumatoid arthritis. Osteoarthritis and rheumatoid arthritis have different causes, risk factors, and effects on the body: 1  Osteoarthritis pain, stiffness, or inflammation most frequently appears in the hips, knees, and hands.ven though they have these differences, osteoarthritis and rheumatoid arthritis often share common symptoms: 1  Joint pain. 2  Stiffness. 3  Inflammation or swelling.