Final answer:
Steve's behaviors align with Antisocial Personality Disorder (APD), characterized by a lack of regard for others' rights, impulsivity, deceitfulness, irresponsibility, and lack of remorse over misdeeds.
Step-by-step explanation:
The disorder that most closely matches Steve's behaviors is Antisocial Personality Disorder (APD). APD is characterized by a disregard for others' rights, impulsivity, deceitfulness, irresponsibility, and lack of remorse over misdeeds. Steve's history of breaking the law, conning his family, and lack of remorse align with the symptoms of APD. Signs of this disorder can emerge early in life, but a person must be at least 18 years old to be diagnosed with APD.
Learn more about Antisocial Personality Disorder