49 Wilhelm Wundt Principles of Physiological Psychology (1873–74) The book that made Wundt the dominant figure in the new science of psychology. Tran… - Tom Butler-Bowdon

In the 1950s, primate researcher Harry Harlow’s legendary experiments replacing the real mothers of baby monkeys with cloth ones proved the extent to which infants need loving physical attention in order to become healthy adults.

Barry Schwartz’s distinction between maximizers and satisficers has given us the counterintuitive insight that restricting our choices in life can actually lead to greater happiness and satisfaction, and

Love has traditionally been the domain of poets, artists, and philosophers, but in the last 50 years the terrain of relationships has increasingly been mapped by psychologists.