It’s happening all over the developed world. Birth rates are falling in China, South Korea, Japan, Mexico, Spain, Portugal, Germany, and Greece. Things have played out more slowly in the United States, but we seem to continue moving in the same direction. The U.S. fertility rate has been in decline since just before the Great Recession and plummeted in 2020 as COVID wreaked havoc on the economy and created uncertainty for aspiring parents. But in 2021, the birth rate turned positive for the first time since 2014. New research by the Center for Retirement Research looks past these conflicting signals and finds that, according to early survey data, many younger women lowered their expectations during COVID about how many children…