Research Seminar: “Affect, Coping, and Pain Intensity in Chronic Pain Sufferers “Monica Erbacher M.A.

12:00 pm on Wednesday, December 5, 2012
1:00 pm on Wednesday, December 5, 2012
Talbot 519
Chronic pain impacts over 83 million American adults, resulting in over $600 billion in lost wages and medical costs annually. Developing successful methods of lessening pain and disability helps cut down this cost and augment well-being for chronic pain sufferers. Empirical evidence links reported negative affect to pain intensity and catastrophizing about pain; however, more recent research indicates positive affect may counteract these effects, influencing pain and catastrophizing in the opposite direction. In much of the chronic pain literature, investigations focus on smaller homogeneous samples (e.g., adult women with fibromyalgia, adult men with post-surgical lower back pain), reducing generalizability. The present study includes a large sample heterogeneous with respect to type and source of pain, and has two objectives: 1) Evaluate the measures used with item response models and differential item functioning, and; 2) Examine the effects of positive affect on catastrophizing and pain intensity after accounting for the effects of negative affect, using structural equation models. Partial Credit Model results indicated a reduced response scale is ideal for negative affect and pain intensity items, items with lower location scores are needed for the positive affect, negative affect, and catastrophizing scales, and four items show differential item functioning by gender on the pain intensity scale. Structural equation models were conducted on trait level scores of positive affect, negative affect, catastrophizing, and pain intensity. Adding paths from positive affect to pain and catastrophizing resulted in significantly better model fit than models without these paths. Including these relationships attenuated the magnitude of the paths from negative affect to pain and catastrophizing, although these changes were small. Thus, positive affect may provide an avenue for lessening the effects of negative affect on pain and coping. Lunch will be provided, so please RSVP to Molly Marino (, if you plan to attend. NOTE: This seminar will be available via webinar. WEBINAR INSTRUCTIONS 1.) To view the presentation online paste the URL below into your browser. You do not need a code – just enter your name. 2.) Conference Call Instructions: Dial in: 1-888-394-8197 Participant Password: 290359