“Considerable evidence shows that growing up poor makes it harder to succeed as an adult,” Yellen said Thursday in Washington, in remarks reported by CNN. Yellen was talking at a conference on community development.

A recent Fed showed that 10% of people between the ages of 25 to 39 lived in a somewhat unstable environment as children, the Wall Street Journal reports. They worried regularly about having food to eat, having a stable caregiver, and their personal safety in their youth. And now as adults, roughly half of that population are struggling make ends meet, the survey found. Compared to adults who grew up in a more stable childhood environment, these adults also were less likely to have employment and consistent income.