A serious illness, family crisis or death in the family can bring out the best behavior among relatives — or the worst. According to the 2014 Intra-Family Generational Finance Study by Fidelity Investments, 64 percent of parents older than 55 who have at least $100,000 in investable assets and their adult children over 30 aren’t on the same page about when the right time is to have conversations about estate planning. Even among those families that do talk about these topics, few get into the level of detail that’s recommended. The study found that 31 percent of parents say they haven’t talked in detail about estate planning; an additional 10 percent haven’t discussed the subject with their offspring at all.