Essentially, almost all younger siblings have the innate desire to mimic their older sibling. While we can't expect older siblings to parent their younger brothers and sisters, they can be positive role models. Here's how.
We quickly learned that what other kids intuited — grammar, innuendo, body language — Casey would have to study, as if a second language, except it would be his first. So the lessons began in earnest — for all of us, really.