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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 gen 2010 anni - Dunfield and Kuhlmeier

Descrizione:

This study showed that we often help those who have helped us, a reciprocity norm. The study/experiment was done with infants and showed that infants were more helpful to an adult after the adult had given them a toy first.

Aggiunto al nastro di tempo:

Data:

1 gen 2010 anni
Adesso
~ 15 years ago