What is the control in this experiment? why does this serve
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What did the first language sound like

The condition in which joints are inflamed is bursitis select the best answer from the choices provided ot f

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.