The link between childhood trauma and adult outcomes was striking. People with an ACE score of 4 were seven times more likely to be alcoholics as adults than people with an ACE score of 0. They were six times more likely to have had sex before age 15, twice as likely to be diagnosed with cancer, four times as likely to suffer emphysema. People with an ACE score above 6 were 30 times more likely to have attempted suicide.

Later research suggested that only 3 percent of students with an ACE score of 0 had learning or behavioral problems in school. Among students with an ACE score of 4 or higher, 51 percent had those problems.

In Paul Tough’s essential book, “How Children Succeed,” he describes what’s going on. Childhood stress can have long lasting neural effects, making it harder to exercise self-control, focus attention, delay gratification and do many of the other things that contribute to a happy life.

Basically, if you fracture your neural connections during your formative years, it becomes harder to learn how to be focused and delay gratification.