Which disorder is characterized by deficits in interpersonal relationships and communication, as well as stereotypic behaviors?

Autism Spectrum Disorder (ASD) is characterized by significant challenges in interpersonal relationships and communication skills, as well as the presence of restricted and repetitive behaviors. Individuals with ASD may struggle to understand social cues, engage in typical conversational exchanges, and form relationships with others. They often display stereotypic behaviors such as hand-flapping, rocking, or fixed interests in specific topics or activities.

The other disorders listed do not encompass the same range of deficits in communication and social interaction as seen in ASD. For instance, Obsessive-Compulsive Disorder primarily involves intrusive thoughts and compulsive behaviors, without the core social communication deficits associated with ASD. Social Phobia primarily focuses on the fear of social situations but does not involve the same level of pervasive communication difficulties or stereotyped behaviors. Attention-deficit/hyperactivity disorder is mainly characterized by issues with attention, hyperactivity, and impulsivity, which do not directly relate to the social and communication deficits seen in autism. Thus, ASD accurately captures the combination of interpersonal relationship challenges, communication deficits, and stereotypical behaviors.