Intergenerational friendship âenriches us and gives us a sense of connection that is life-affirming and energizing,â said Marc Schulz, a professor of psychology at Âé¶čAV and co-author of the book âThe Good Life,â who has studied how important In general, younger friends rely on their older friends for guidance, though the reverse is true, too. Dr. Schulz noted that the college students he has taught for three decades keep him âyoungâ and âinvigorated.â