Burgess, Groth, Holmstrom, and Sgroi (1978) describe sadism by stating that:"The sadistic offender finds pleasure in hurting the child… Sexuality becomes an expression of domination and anger. In some way the child symbolizes everything the offender hates about himself, and thereby becomes an object of punishment. The victim's fear, torment, distress, and suffering are important and exciting to the sadistic pedophile, since only in this context is sexual gratification experienced… His intention is to hurt, degrade, defile, or destroy the child. Sexuality and power are in the service of anger."
This definition appears to be in conflict with itself. The issue of sexual gratification from victim suffering is appropriately raised, however it is sandwiched within the concept that sexuality and power are servicing aggression and anger. When sexuality and power service anger and aggression, those associated behaviors are best described as anger-retaliatory (see Generalized Behavioral Assumptions below), and not as sadistic. Sadistic behaviors actually involve the use of anger and aggression in the service of sexual gratification. Readers adhering to this conflicted definition might proceed to confuse anger-retaliatory behavior for sadistic in their casework...
Cleckley (1988), on the other hand, stretches his description of psychopaths to include an element of sadism:
"In a broader sense it might be said that the apparently willful persistence with which they bring humiliation and emotional suffering upon those who love them, as well as failure and unpleasant circumstances upon themselves, marks all psychopaths as both sadists and masochists. Only in this sense, however, are these impulses common or consistent, and the gratification is probably not the directly erotic sensation enjoyed by perverts who literally whip others or have themselves whipped."
This usage of the term sadism ignores two requirements. In an applied sense, it either assumes the intent of the offender to cause suffering, or ignores the issue of offender intent altogether. Furthermore, it purposefully removes the requirement of achieving sexual gratification through victim suffering. It ultimately suggests that general cruelty and sadism are really the same thing, regardless of intent or context. While it is possible that Cleckley was being somewhat facetious in this discussion of sadism, in the overall context of his work a reader may not be certain. Therefore, readers adhering to this generalized description might proceed to infer that all psychopaths are also sadists; sadistic behavior may be assumed and not established, in subsequent case analysis...
Perhaps one of the most helpful and informed renderings of sadism, however, can be found in Dietz et al (1995).
"Sexual Sadism is a persistent pattern of becoming sexually excited in response to another's suffering… Inflicting pain is a means to create suffering and to elicit the desired responses of obedience, submission, humiliation, fear, and terror."
There is very little room for misinterpretation in this definition, and it easily meets the proposed standard for sadism. The authors also do readers the important service of explaining that sadism and criminality are not necessarily the same thing, and that there are many criminal behavior patterns that are routinely confused for sadistic, including anger or revenge motivated cruelty and postmortem mutilation.
http://www.francesfarmersrevenge.com/stuff/serialkillers/18.htm
It's hard to know in which category the Ramsey murder should be placed. Was the offender attacking JonBenét in service of a sexual need to witness victim pain and suffering, or was the attack in service of feelings of anger/retaliation? These would be two different types of offenders with different motivations and possibly different lifestyles.
What further complicates the picture is the use of secondary sexual mechanisms. In the Ramsey case, a vaginal penetration did occur but no semen was left at the scene. In secondary sexual mechanisms, an offender will gratify himself at the scene mentally and emotionally but will wait until he is alone for sexual gratification. So, the absence or presence of semen may not tell us much. Possibly, a closer look to determine if certain types of offenders are more predisposed to act out this way could lead to an answer.
The Ramsey case, in some respects, could fit the criteria of a sexual sadist in that all of the injuries were premortem. The victim has to be alive in order to suffer. Please note that 'suffering' can include mental and emotional suffering for the sexual sadist. It is not known if the stun gun injuries were in service of utilitarian needs or to torture, but for the purpose of this discussion, it could have been used for torture so thereby does not exclude the sadist.
There has been considerable discussion and debate excluding the sadist on the basis that a sadist would have pre-planned more thoroughly, taken the victim away in order to spend enough time with her, and inflicted more injuries. These are generally valid arguments. However, the sadist is also willing to get what he wants within the constraints of the situation. Some prefer to attack their victims within their own home and do not necessarily need long periods of time alone with their victims. Less than an hour has been noted in some cases. In terms of injuries, the slow use of a garotte alone for the purpose of watching victim suffering for sexual gratification would meet the criteria.
Of course, we have the note which tends to point away from the sadist. Keeping in mind the motive of the sadist is to sexually gratify himself through victim suffering, one has to question how sexually gratifying a ransom note could be. It's possible that imagining the suffering of the parents could be sexually gratifying to a disordered mind, but it seems more in the realm of servicing anger and retaliatory needs than sexual needs.
More on anger/retaliation offenders later...