Are migrants and their families happier after migration?

Resumen

By comparing migrants to matched potential migrants with similar
characteristics of their country of origin using Gallup World Poll data, it
is estimated that migrants worldwide assess the quality of their lives on
average 9% more positive after migration. They also experience appro-
ximately 5% more positive emotions and 7% less negative emotions due
to migration. Most of these happiness gains are experienced within the
first five years after migration. Families left behind generally evaluate
their lives more positively, but frequently experience more negative
emotions.