If appropriate to the life stage, ask if they ever experienced: midlife crisis, ageism, gender bias.
Show one of the videos and ask your interviewee what their thoughts are. Do they agree or disagree?
Ask them what advice they would give to someone entering their stage of the life span and explain why.
What challenges do they face at their life stage? Do they feel these challenges are common among others within the same life stage, or do they feel unique in these challenges?