PLoS One 2010, 5, e14150. No a person variable leads to sexual addiction, but there are assumed to be organic, psychological, and social aspects that lead to the progress of these disorders. One of these horses manifests as a vengeful spirit and possesses him. 76. Impett, E.A. Strachman, A. Finkel, E.J. Gable, S.L. 75. Muise, A. Impett, E.A. Desmarais, S.