I have noticed some sex offenders are heavy. Although, it is true, as Rainsong pointed out, offenders come in different shapes and sizes, I think problems in the endocrine system would be a worthy study in sex crime offenders. Low levels of testosterone combined with high levels of estrogen in a man who is predisposed to violence could be a disastrous combination. The ability of the offender to seek out and maintain healthy relationships with a woman would be impaired, if not non-existant, possibly leading to impairment in all areas of his life. I know Arthur Shawcross was involved in a pilot study of endocrine system dysfuntion and was found to have problems.

If the offender in the JonBenét Ramsey case constructed the garotte out of necessity rather than desire or mental pathology, it makes sense to consider what physical pathology might be underlying the weak grip strength. Who knows? DonBradley might be right, and it will help to identify him. I have to admit, I have wondered if the offender constructed the garotte because something was wrong with his hands. Maybe it hurts like hell to strangle someone for several minutes with a 1/4" cord.

I don't really see a bondage fantasist at work in this crime scene. Fantasies of bondage are elaborate and long-standing before any crimes, if a crime is going to occur, are committed. The bonds are tight, usually behind the back, feet are often bound, and the cords often connect between different bondage points. Often the victim will strangle herself if she moves because the offender has tied her that way on purpose. The offender has thought about it for a long time and takes the time to place the bindings just the way he has envisioned. This crime scene is pretty "wimpy" as far as bondage goes, IMO.

Incidentally, I am talking about criminal bondage. My research indicates those who participate in bondage between consenting adults tend to be non-violent.