We are in an unusual position with regard to how research is seen for our illness. To explain, I'll use an analogy I've used before. If a study shows that CBT or exercise helps some cancer patients feel moderately better, nobody assumes cancer is a mental illness. But, if the exact same result is found in a CFS study, people offer it as "proof" that CFS is all in the head. And no amount of explaining the reality of what a study actually studies seems to change this. But I do sometimes find it helpful to offer other studies that illustrate how a psychological evaluation might be mistakenly made with other illnesses. First, here are some studies where a well-known and widely used standard psychological test scored people with various physical illnesses. The psychosocial impact of systemic lupus erythematosus and rheumatoid arthritis http://onlinelibrary.wiley.com/doi/10.1002/art.1780270102/abstract Elevated MMPI scores for hypochondriasis, depression, and hysteria in patients with rheumatoid arthritis reflect disease rather than psychological status http://onlinelibrary.wiley.com/doi/10.1002/art.1780291206/abstract As you can see, people who are physically ill scored high on scales of Hypochondriasis, Depression, and Hysteria. And I can imagine why. If someone is sick they are going to manifest physical symptoms that might concern them. But it doesn't mean they are imagining these symptoms. Also, negative things in ones life can lead to depression, so it's no surprise that illness can too. Now, one can argue and say "Well, the presence of a physical illness would rule out (or mitigate) the mental diagnosis." But if that were the case, why doesn't CFS rule out a mental diagnosis. It's categorized as a neurological illness by the WHO, and many studies have found physical manifestations. Next, there is the assertion that CFS patients had higher levels of abuse in their lives, and this demonstrates that CFS is based on an emotional response. To begin with, I should point out that some studies suggest that emotional abuse can lead to problems in the endocrine and immune systems. IOW, emotional abuse can lead to measurable physical problems. For example: Thymus of abused/neglected children: http://www.ncbi.nlm.nih.gov/pubmed/1568682 Psychobiological Effects of Sexual Abuse: A Longitudinal Study http://onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.1997.tb48276.x/full Next, it's not necessarily the case that CFS patients did have higher levels of childhood sex abuse. Sexual Abuse, Physical Abuse, Chronic Fatigue, and Chronic Fatigue Syndrome: A Community-Based Study - http://journals.lww.com/jonmd/Abstr...,_Physical_Abuse,_Chronic_Fatigue,_and.8.aspx Before I conclude I want to make something clear. My point here is not to prove the phenomenon of psychobiology one way or another, nor is it to argue the merits of the MMPI. I am simply pointing out that the picture is not as simple as some sources would have us believe. And because these sources only present research that supports one side of the argument, I thought it would be helpful to realize that there is other research as well.