[Solved] Find the nth term {an} of the geometric sequence. When given, r is the common ratio. -2, 4, 8, 16, 32, ... Habituation: Decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a stimulus, their interest wanes and they look away sooner. Erotic Stimulus: Any object, situation, or aspect of the environment that induces sexual arousal or desire. Romantic Fantasies: Imaginative thoughts or daydreams focused on idealized romantic ideals or relationships. Sex: In psychology, the biologically influenced characteristics by which people define male and female.