My cousin turns 40 years old this year (he's much older, I'm a Zoomer) and is seemingly a good person, but according to family lore, when he was 8 months old he started giggling and clapping his hands when he saw the Challenger explode on live TV. Could that indicate psychopathy?

My cousin turns 40 years old this year and is seemingly a good person, but when he was 8 months old he started giggling and clapping his hand when he saw the Challenger explode on live TV. Could that indicate psychopathy?