Playing hide-and-go-seek with your best friend. Opening up fresh supplies on the first day of school. Going on your first date. People get nostalgic about the personal relationships they’ve had, and the experiences they can’t get back. But that doesn’t mean they’re living in the past. Nostalgia can, in fact, be a good thing. We talk with Le Moyne College psychology professor Krystine Batcho about how our perspective on bygone days actually affects our present.