Final answer:
Jamison's characteristics, such as limited speech, lack of eye contact, and specific preoccupations, suggest a likely diagnosis of autism spectrum disorder (ASD).
Step-by-step explanation:
Given the symptoms outlined, it is likely that Jamison would receive a diagnosis of autism spectrum disorder (ASD). ASD is a complex neurodevelopmental condition characterized by challenges in social interaction, communication difficulties, repetitive behaviors, and often, intense interests in specific topics. Jamison's struggles with eye contact, limited speech, and a strong fixation on objects such as buttons and zippers are indicative of behaviors commonly associated with individuals on the autism spectrum. A comprehensive evaluation by a healthcare professional would be essential for a definitive diagnosis and to determine appropriate support and interventions for Jamison.