This link has a great summary / synopsis.
"Behind today’s most creative and successful people is a secret: an ability to reframe reality to reveal the hidden possibilities within even the most apparently unpromising situation—to, as the authors of this groundbreaking study term it, “see the mighty oak in the acorn.”
Appreciative intelligence provides a new answer to what enables successful people to dream up their extraordinary and innovative ideas; why employees, partners, colleagues, investors, and other stakeholders join them on the path to their goals, and how they achieve these goals despite obstacles and challenges.
It is not simple optimism. People with appreciative intelligence are realistic and action-oriented—they have the ability to not just identify positive potential but to devise a course of action to take advantage of it."