In 1972, researchers launched a project known as the General Social Survey. The GSS asked Americans to share their opinions on a whole range of important issues, from education spending to the role of women in the workforce.

In 1988, the GSS began asking Americans to share their thoughts on another topic: whether gay people should have the right to marry. That year, fewer than 12 percent of respondents said yes.

Fast-forward three decades. In 2018, 68 percent of those surveyed said that gay couples should have that right.

This week on Hidden Brain, the psychological strategies behind one of the most dramatic transformations of public attitude ever recorded. We'll also explore the lessons this story holds for anyone who seeks to bring about change.

Read the full article about changing opinions of LGBTQ rights at NPR.