Helen Fisher, PhD

Why Him? Why Her? How to Find and Keep Lasting Love

(Henry Holt, January 2010)

Why Him? Why Her? provides a new way to understand relationships—with partners, friends, family, colleagues and clients.  The book stems from Fisher’s pioneering work on the biology of personality.  She has established that we have evolved four broad, biologically-based styles of thinking and behaving, linked with the dopamine, serotonin, testosterone and estrogen systems in the brain.  Using these data, she developed the first ever questionnaire based directly on brain physiology: the Fisher Temperament Inventory.  This questionnaire has now been taking by over 15 million people in 40 countries and has been validated by two brain scanning experiments (using fMRI). 

Fisher explains these styles of thinking and behaving so that you can learn much more about yourself.  Then using her data on 28,000 Americans, she explains why you fall in love with one person rather than another, and how to use these data from neuroscience to find, build and sustain happy long-term relationships.

Provocative and illuminating, this groundbreaking book goes beyond theory to show that the complex world of romance and partnership isn’t as complicated as you might think.  Take Dr. Fisher’s personality test to discover crucial things about yourself and learn how to find and keep lasting love.  Fisher’s book deserves to be read by everyone seeking love or building a loving long-term partnership.

“Fascinating…You may already have your dream lover, but you’ll want to read this for the many insights on the science of love.”  
— The Boston Globe

Buy from Amazon.com.

Why Him? Why Her? published in 22 countries

Hear Dr. Fisher discuss Why Him? Why Her? at Better World Books Podcast discussion with Dana Barrett.