According to Freud,behaviors such as smoking,chewing gum,and biting one's fingernails probably can be traced back to unmet needs during which psychosexual stage?

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Freud believed that behaviors such as smoking, chewing gum, and biting one's fingernails are indicative of an oral fixation, which occurs when an individual's needs were not adequately met during the oral stage of psychosexual development. This stage occurs from birth to about 18 months of age, during which infants derive pleasure from oral stimulation, such as sucking and tasting. If these needs are not met, it can result in an oral fixation, leading to an increased tendency to engage in oral behaviors later in life.

According to Freud,behaviors Such as Smoking,chewing Gum,and Biting One's Fingernails