Which condition involves self-absorption and preoccupation with inanimate objects?

The condition that involves self-absorption and a preoccupation with inanimate objects is Autistic Disorder. This disorder is characterized by challenges in social interaction, communication, and a tendency to engage in repetitive behaviors or interests. Individuals with Autistic Disorder often demonstrate a strong fixation on specific objects or topics, which can manifest as intense study or manipulation of these items. Such behaviors can be a source of comfort or stimulating interest for the individual.

In contrast, the other conditions listed do not specifically emphasize self-absorption or a strong preoccupation with inanimate objects. Communication Disorder primarily affects an individual's ability to communicate effectively, while Cerebral Palsy is related to physical impairments resulting from motor control issues, and Attention Deficit Disorder involves challenges with attention regulation and impulsivity without the defined self-focused interests seen in Autism. Thus, Autistic Disorder stands out as the condition closely aligned with the described characteristics.