Figures

Figure 1.1a. Stages of the human male sexual response cycle 

(Source W. H. Masters and V. E. Johnson, Human sexual response [Boston: Little, Brown and Company, 1966], p. 5.) (Reprinted with the permission of the Masters & Johnson Institute.) 

Figure 1.1b. Stages of the human female sexual response cycle

(Source: W. H. Masters and V. E. Johnson, Human sexual response [Bostonz Little, Brown and Company, 1966], p. 5.) (Reprinted with the permission of the Masters & Johnson Institute.)

Figure 1.2. Relationship of phylogenetic and ontogenetic familiarity to initial-stimulus appetence and stimulus discriminability 
 

Figure 1.3. 
Distribution of the trait "discriminative ability" in a hypothetical
population.

Figure 1.4.
Oystercatcher reacting to giant egg (supra-normal stimulus in preference to normal egg (foreground) and herring gull's egg (left).
(From N. Tinbergen, The study of instinct, Oxford University Press, 1951, p. 45. Reprinted with the permission of the publisher.)

Figure 1.5 
Relationship of stimulus fitness and stimulus potency to the degree of stimulus discrimination in the perceiving individual

Figure 1.6 
Relationship of total stimulus potency (or overall desirability) of a perceived
individual  to the number of near optimally-discriminated-for-fitness stimuli by a perceiving individual.

Figure 1.7
Human heterosexual-male sexual releasing stimuli.

(a) Phylogenetically familiar, low degree of discriminableness, nubile-female shape on the tire mudguard on an 18-wheel, semi-tractor trailer, originally advertising a product name.

The visual vulnerability of human males to the sexual conditioning of ontogenetically made-familiar animate and inanimate objects and contexts is exploited by the garment industry in the industrialized world. The industry ~ has made lace a sexually dimorphic, female fabric (i.e., an inanimate object) "K that has been conditioned speci?cally to sexual arousal by being used almost exclusively on adult female lingerie and bridal gowns. (See Figure 1.7b.) 

Figure 1.7b

(b) Ontogenetically familiar, highly discriminable, frequently conditioned sexual
releasing stimulus on adult female lingerie and bridal gowns.

Figure 1.8 
"Infant/child schema" of humans. 

Left: Head proportions that are generally considered to be "cute." 
Right: Adult forms, which do not activate the drive to care for the young (broodcare). 

(From Eibl-Eibesfeldt, 1975, p. 491 [originally published by K. Lorenz in Die angeborenen Formen möglicher Erfahrung, Zeitschrift Tierpsychologie, 1943, 5, 235-409]. Reprinted with the permission of I. Eibl-Eibesfeldt.) 

Figure 1.9

The relationship of relative age and relative gender of individuals toward whom one is sexually attracted—represented by four Attraction Quadrants. 
(North- and East-pointing arrows are explained in caption to Figure 1.11.) 

Figure 1.10

Relationship of male androphilic and gynephilic pedophiles and ephebophiles to male individuals with other sexual orientations and to the Attraction Quadrants of relative-age and relative-gender attraction throughout the life span. 
(North- and East-pointing arrows are explained in caption to Figure 1.11.) 

Figure 1.11

Relationship of brain masculinization and brain defeminization in the male to relative-age and relative-gender preferences in the four Attraction Quadrants. Compare to Figure 1.10 and see text. The North- and East-pointing arrows signify that the brains of male (and female) fetuses start out unmasculinized and feminized and that their degree of masculinization and defeminization is primarily responsible for the variance in gender-typical behavior and gender-typical sexual attraction both within and between the two biological sexes.