In Families Jane Howard informally visits many dozens of families and tries to discover what makes the best ones work so well. Families are not dying, she finds, although they are evolving in various ways. From the tightest-knit nuclear family or extended clan to the most fragile new commune, the family in one guise or another remains everybody's most basic hold on reality. We may run away from our families as many do, but no sooner do we escape than we find another one, often very much like it.

Sympathetically, with immense thrust, she crosses the continent to discover families'...