Barbara L. Fredrickson, Ph.D.

ブック
Positivity Positivity
Positivity
2009年
Love 2.0 Love 2.0
Love 2.0
2013年

オーディオブック
Positivity: Groundbreaking Research Reveals How to Embrace the Hidden Strength of Positive Emotions, Overcome Negativity, and Thrive (Unabridged) Positivity: Groundbreaking Research Reveals How to Embrace the Hidden Strength of Positive Emotions, Overcome Negativity, and Thrive (Unabridged)
Positivity: Groundbreaking Research Reveals How to Embrace the Hidden Strength of Positive Emotions, Overcome Negativity, and Thrive (Unabridged)
2009年