Final answer:
Fetishism refers to sexual arousal from either using objects or focusing on non-genital body parts for sexual gratification, which differs from other types of sexual behaviors. It can be associated with fixations developed during Freud's psychosexual stages of development.
Step-by-step explanation:
A person with fetishism experiences sexual arousal and satisfaction by using objects of sexual stimulation or centering sexual activity on objects or nongenital body parts. Fetishism is a type of sexual behavior where there is a psychological dependency on specific objects or non-genital body parts for sexual gratification. Unlike the focus on observing others engaging in sexual activities or having sexual activity with children, fetishism is centered on inanimate objects or specific body parts that are not traditionally seen as sexual in nature. The concept of fetishism can be understood in a broader context of sexuality and psychological development, as laid out by Freud's psychosexual stages of development, where individuals may develop fixations during various stages that can manifest in adult behavior, including sexual preferences.