1 Jan 1938 Jahr - We only need one thing to be happy.-George Vaillant
Beschreibung:
This was a 75 year long study that followed a group of Harvard undergraduate students for 75 years. Constantly collecting data on various aspects of each students life to determine what gave them the most happiness and often it was love.
Zugefügt zum Band der Zeit:
psych
timeline
Datum:
