Martin E.P. Seligman FROM THE APRIL 2011 ISSUE

https://hbr.org/2011/04/building-resilience

Penn Resiliency Program, under the direction of Karen Reivich and Jane Gillham, of the University of Pennsylvania, for young adults and children.

A team led by the University of Michigan professor Christopher Peterson, author of the Values in Action signature strengths survey, created the test, called the Global Assessment Tool (GAT). It is a 20-minute questionnaire that focuses on strengths rather than weaknesses and is designed to measure four things: emotional, family, social, and spiritual fitness. All four have been credited with reducing depression and anxiety. According to research, they are the keys to PERMA.

https://www.researchgate.net/publication/51067861_Building_resilience