A 23-year-old graduate student is appointed to be the team leader for a group project. He is so rigid and inflexible about the rubric that other members of the team get frustrated, and the project almost collapses. He insists that each section must be completed and perfected before the next section can be started. The project is eventually finished, but no one on the team will work with him again. Which disorder best reflects this man's behaviors?

Choice A reason: Avoidant personality disorder is characterized by social inhibition and fear of rejection. While the student is rigid, the primary issue is perfectionism and control, not avoidance of social interactions. Choice B reason: Narcissistic personality disorder involves grandiosity, need for admiration, and lack of empathy. The student’s behaviors reflect rigidity and perfectionism rather than entitlement or excessive self-focus. Choice C reason: Borderline personality disorder involves instability in relationships, mood, and self-image, along with impulsivity. The student’s behaviors do not demonstrate these traits. Choice D reason: OCPD is characterized by perfectionism, rigidity, and an excessive focus on order and control. The student’s insistence on perfect sequential completion and inability to compromise aligns with OCPD traits.