Ya bother me with details. I got more to worry about than what school of thought each psychologist belonged to. Besides, it's been a few years since I cracked that particular book.
But, yes, I am definitely a behaviourist, but I also enjoy the works of Freud. A lot can be said about what comes out of our unconscious mind.
I don't put much credence in the theory of genetic predisposition. I don't think our genes determine if we are dominant or submissive. They might, although I am hesitant to give much credit to this theory as well, determine our sexuality, but until we complete that human genome project and completely map the human genetic make-up, I will continue to hold the idea that we choose whether we dominate or submit or whether we are gay, straight or bisexual.
I believe our parents, friends and what we read and see daily affect our preferences. I DO NOT, however, believe that music, literature, pornography or movies can make us do anything we wouldn't ordinarily want to do anyway. I think BDSM appeals to some people when they see it. I think gay sex appeals to some people when they see it. I think lesbianism appeals to some people when they see it. I also think that violence appeals to some people when they see it.
So, yes, that part might be predisposed, but until you are confronted with the object of your predisposition, you may not realize that you even have the desire.
To some people being tied up and spanked is offensive and degrading. To others, it represents something terribly powerful and sexual. It all boils down to how you think, how you were taught, your level of open-mindedness and your willingness to accept new thoughts and ideas.