Answer:
Harrison's handicaps include:
Large headphones, instead of a small earpiece, as a mental handicap.
Thick glasses to blind him and give him headaches.
Scrap metal strapped to his body amounting to 300 pounds.
A red rubber ball he must wear on his nose, no eyebrows, and black caps for his teeth as appearance handicaps.
Step-by-step explanation:
For example, Harrison's father George must wear "a little mental handicap radio in his ear" because his intelligence is "way above normal." The device makes random loud noises to keep him from being able to finish a thought.