The diagnoses of conduct disorder and antisocial personality are both characterized by: A. A lack of guilt or remorse for wrongdoing B. A lower than average level of intelligence C. Consistent parenting D. Close friendships among age-related peers

Let's first understand the core features of the two disorders. Conduct Disorder is a psychological disorder diagnosed in childhood or adolescence and involves repetitive patterns of behavior where the basic rights of others or major social norms are violated. Antisocial Personality Disorder is a personality disorder that often begins in childhood or early adolescence and continues into adulthood, characterized by pervasive patterns of disregard for the rights of others, plus irresponsible and manipulative behavior.

Let's analyze each option to determine which one best characterizes these two disorders. A. A lack of guilt or remorse for wrongdoing: Both Conduct Disorder and Antisocial Personality Disorder involve tendencies to violate others' rights and exhibit irresponsible behavior with little or no concern for the harm they cause. B. A lower than average level of intelligence: Intelligence levels are not a specific characteristic or criterion for either of these disorders. Individuals with these disorders can have varying levels of intelligence. C. Consistent parenting: Consistent parenting is not a defining characteristic of either disorder, though parenting styles could be a contributing factor in the development of the disorders. D. Close friendships among age-related peers: This option is not relevant since both disorders involve harmful behavior towards others, rather than focusing on close friendships.

We can now determine that the best answer is: A. A lack of guilt or remorse for wrongdoing - as both Conduct Disorder and Antisocial Personality Disorder are characterized by patterns of harmful behavior towards others, with little or no remorse for the harm caused.