Specificity of vaginal pulse amplitude and vaginal blood volume in rea
ction to visual sexual stimuli was investigated by comparing responses
to sexual, anxiety-inducing, sexually threatening, and neutral film e
xcerpts. Subjective sexual arousal, body sensations, emotional experie
nce, skin conductance, and heart rate were monitored along with the ge
nital measures. Self-report data confirmed the generation of affective
states as intended. Results demonstrated response specificity of vagi
nal vasocongestion to sexual stimuli. In terms of both convergent and
divergent validity, vaginal pulse amplitude was the superior genital m
easure. Skin conductance discriminated among stimuli only to a small d
egree, whereas heart rare failed to discriminate among stimuli altoget
her.