They will also begin completing a weekly, 5 minute, end-of-week questionnaire (see appendix) which assesses work hours for the week, number of hours scaling for the week, medication use for pain, hand function, and acute injury events to the upper extremities (e.g., laceration, bruise) during the week (If an elevated pain score is due to an acute traumatic event, the symptom score for that week will be excluded from the analysis). Three body regions (1) the right hand/wrist, (2) right elbow/forearm and (3) the right shoulder (or left if the subject performs scaling with the left hand), will be assessed for the worst pain during the preceding 7 days using a 0 to 10 point scale (0=no pain; 10=unbearable pain) (Gerr et al. 2002).