Dietz P E, Evans B
Am J Psychiatry. 1982 Nov;139(11):1493-5. doi: 10.1176/ajp.139.11.1493.
The authors classified 1,760 heterosexual pornographic magazines according to the imagery of the cover photographs. Covers depicting only a woman posed alone predominated in 1970 but constituted only 10.7% of the covers in 1981. Bondage and domination imagery was the most prevalent nonormative imagery and was featured in 17.2% of the magazines. Smaller proportions of material were devoted to group sexual activity (9.8%), tranvestism and transsexualism (4.4%), and other nonnormative imagery. The authors suggest that pornographic imagery is an unobtrusive measure of the relative prevalence of those paraphilias associated with preferences for specific types of visual imagery and for which better data are lacking.
作者根据封面照片的意象对1760本异性恋色情杂志进行了分类。仅描绘独自摆姿势的女性的封面在1970年占主导地位，但在1981年的封面中仅占10.7%。捆绑与支配意象是最普遍的非规范意象，在17.2%的杂志中出现。涉及群体性行为（9.8%）、异装癖和易性癖（4.4%）以及其他非规范意象的材料比例较小。作者认为，色情意象是一种不显眼的衡量标准，可用于衡量与特定类型视觉意象偏好相关的性偏好障碍的相对流行程度，而目前缺乏更好的数据。
