"Poor mental health scores were clustered among those with very small personal communities as well as those whose personal communities were fragile, whether due to family instability during childhood or simply through failure to nurture friendships. Spencer and Pahl attribute this mental health pattern to the fact that people with broader personal communities have a range of people to rely on for support. On the other hand, people who have “all their eggs in one basket” are likely to find their entire world rocked if their sole supportive relationship becomes unavailable."