Cited sources? I looked in Category:Abnormal psychology and in Abnormal psychology and I didn't find any cited sources to support the inclusion of non-psychological articles in psychological categories. Category:Sexual and gender identity disorders is a sub-category of Category:Abnormal psychology. Gender identity disorder, which is listed in DSM-IV Codes, is in Category:Sexual and gender identity disorders. Related subjects and articles such as Transsexualism are not directly psychological subjects defined in DSM-IV Codes and hence don't appear to belong in either of these categories. If they did, they would belong in Category:Sexual and gender identity disorders, not Category:Abnormal psychology. The fact that a suspected sockpuppet of a permanently banned user was inserting the parent category in an apparent effort to insult and demean transgendered people doesn't make it a valid category for the articles to be in.