Taxometric Analysis of the Latent Structure of Pedophilic Interest

The present study examined the latent structure of pedophilic interest. Using data from phallometric tests for pedophilic interest across four samples of offenders (ns = 805, 632, 531, 261), taxometric analyses were conducted to identify whether pedophilic interest is best characterized as taxonic or dimensional. Across the samples, the majority of analyses supported taxonic latent structure in pedophilic interest. Visual inspection of taxometric curves indicated trichotomous latent structure (i.e., three-ordered classes) may characterize pedophilic interest in these samples. In a second step of taxometric analysis, the results supported trichotomous latent structure, indicating the presence of a complement taxon and two pedophilic taxa. In comparison with the complement taxon, the men in the first pedophilic taxon were non-exclusively pedophilic and had similar rates of sexual recidivism and sexual compulsivity. The men in the second pedophilic taxon were exclusively pedophilic, had more child victims and total victims, sexually re-offended at a higher rate, and were more sexually compulsive. The finding of trichotomous latent structure in pedophilic interest is both consistent and inconsistent with previous taxometric studies and has implications for research, assessment, and treatment of pedophilic interest.