Which term is the part of the personality that is ruled by the pleasure principle; center of the instincts, which are largely unconscious?

• A. Libido
• B. Id
• C. Narcissistic personality disorder
• D. Interjection

Answer: (B)

This term refers to the part of the personality that operates on the pleasure principle and acts as the center of instinctual drives, most of which reside in the unconscious. The id is all about immediate gratification—seeking food, comfort, safety, and sex without considering reality, consequences, or morality. It’s present from birth and functions through primitive, illogical thinking known as primary process thought. The energy behind these drives is often described as libido, which fuels the id’s impulses, but libido is energy, not the component of personality itself.

Other options don’t fit this description. Libido denotes the psychic energy behind drives, not the part of the personality. Narcissistic personality disorder is a clinical diagnosis, not a structural part of the psyche. Interjection is a defense mechanism involving adopting another’s values, not a personality component. Therefore, the id best matches the described concept.