Pervasive Development Disorder - Not Otherwise Specified (PDD_NOS) is characterized by which of the following?

Pervasive Developmental Disorder - Not Otherwise Specified (PDD-NOS) is characterized by significant impairments in socialization and communication that do not fully meet the criteria for other specific disorders on the autism spectrum. This classification reflects a varied presentation of symptoms that can include challenges in understanding social cues, difficulty in forming peer relationships, and issues with verbal and nonverbal communication.

Individuals with PDD-NOS may exhibit a range of behaviors and abilities, which is why this diagnosis is considered to be on the broader spectrum of autism. While some may also have language deficits or engage in repetitive behaviors, these traits can vary widely among individuals. Therefore, the emphasis on significant impairments in socialization and communication captures the essence of PDD-NOS, as these areas of difficulty are central to the disorder's characteristics.