33
/es/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
375367
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1 ene 1938 año - We only need one thing to be happy.-George Vaillant

Descripción:

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.

Añadido al timeline:

3 dic 2017
0
0
509

fecha:

1 ene 1938 año
Ahora mismo
~ 87 years ago