Re: Rubin and Statistical Fundamentalism
A few comments/questions: I am yet another observer of this thread and have read the suggested papers and have a few comments. a. I am not a scholar of pure mathematical statistics nor theoretical mathematics, and am not convinced either way since I have yet to see some concrete logical frame work that backs up the 'for' and the 'against' sides. (and yes, Bill, I have read your paper(s). For example, one commentor made the comment that Bill's model "contradicts the quadratic formula" without showing proof. (remember there are those of us who would like to see the proof for these types of statements) b. If you are trying to define causality, do you not have to have knowledge of what exactly may or may not affect your outcome? For example, the growth of an orange may be correlated to the growth of and apple but one is NOT the cause of the other. Now, the causes of growth (water, food, energy) may be similar in each type of fruit, but how each fruit grows may in fact be completely independent of each other. c. Bill, I would have to say that if you responded in a manner less hostile, you may get the information you seek. Jumping down someones throat every time they contradict you is what is burying you and your ideas. And, I need not be reminded that you have been at this for years and that the whole of Academia is out to get you, because frankly, I don't give a damn. d. If you have the variables Y, X1 and X2, correlation tells you how similar each variable is to each other, not how X1 and X2 predicts or causes Y. Correlation does not assume an outcome. More questions: If Y = X1 + X2 in the Chamber's model, are each of the X1 and X2 polarizing? If so is there a chance that the sum of the X's can equal no outcome? Would this create extra variance in the predictability of the model? What shape are the residual distributions in the CC or CR? later... sean. === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
RE: Position Announcement
Dear Colleagues, Sorry for cross-posting for the Position Announcement. Peter Chen Liberty Mutual Research Center for Safety and Health Researcher We are seeking an experimentalist with expertise in transportation psychology. Individuals with interests in any area of transportation psychology will be considered. Those with interests in safe driving interventions, driver selection, and intelligent transportation system (ITS) technologies are especially encouraged to apply. Strong methodological skills and the ability to conduct original, scholarly research are more important than specific area of interest. The successful candidate will possess a background in psychology or related fields (e.g., human factors). Ph.D. or equivalent is required. Recognized by scientific awards from around the world for contributions to the improvement of workplace safety and health, the Research Center employs a multidisciplinary, team-oriented staff of researchers representing fields including: biomechanics, cognitive psychology, industrial/organizational psychology, epidemiology, tribology, physiology, engineering, sociology, biostatistics, and the clinical sciences. The Research Center is located on 86 acres of woodland 25 miles west of Boston, MA. Significant collaborations exist with Harvard University, Texas Tech University, Shanghai Medical University (PRC), the University of Aberdeen (UK), and the Health and Safety Laboratories of the Health and Safety Executive (UK). The Research Center is fully funded and committed to peer-reviewed publication of all its findings. An outstanding driving range and opportunities for further laboratory development are available. For more information about the Liberty Mutual Research Center see our website at http://www.libertymutual.com/research. Interested individuals should submit curriculum vitae, reprints/preprints, and a statement of research background and interests to the attention of: James E. Klock Director of Operations Liberty Mutual Research Center for Safety and Health 71 Frankland Road, Hopkinton, MA 01748 USA === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Weighted Kappa
We are a group of undergraduate physio students and were wondering if you could help us. We are in the middle of a study that compares 16 clinicians answers to a questionnaire (answers selected from 0,1,2,3) and would like to use weighted kappa to analyse our intra and inter rater results. For inter rater analysis the 16 raters produce 256 pairings. We are looking for a some advice/program that might be able to help us. Thanks for your time. Claudia and Annie. 3rd year physiotherapy students. === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
