Which defense mechanism involves attributing one's own unacceptable feelings to someone else?

The correct answer is projection, as it specifically refers to the psychological defense mechanism where an individual attributes their own unacceptable thoughts, feelings, or impulses to another person. This often occurs when someone struggles with recognizing or accepting these negative feelings within themselves, leading them to believe that others are experiencing those same feelings instead.

For instance, if an individual feels angry but cannot acknowledge this feeling due to its threatening nature, they may perceive others as being angry towards them. This allows the individual to avoid confronting their own unacceptable emotions by externalizing them. This mechanism serves as a way to protect the self from anxiety or guilt associated with recognizing these undesirable feelings.

Understanding projection is pivotal in recognizing interpersonal conflicts and emotional responses, as it often breeds misunderstandings and miscommunications. Consequently, awareness of projection can assist in personal development and enhance interpersonal relationships.