The idea of “Type A” and “Type B” personalities seems ubiquitous ― from workplace stereotypes to online memes. These personality types also show up in parenting, as some c hild-rearers pride ...

“He’s very hard on himself,” my 11-year-old’s teacher said during our first-semester conference, “and often this frustration brings him to tears.” We sat in a weird quiet as my son’s teacher filled ...