Findings on Happiness and subject: Telephone)

Correlate as named by investigatorPeople investigated
FindingTelephone16+ aged, general public, West Germany, Germany, followed 5 years, 2000-2004
FindingOwns a cellular phone17+ aged general public, South-Africa., 2008
FindingSmartphone use18+ aged, general public, Italy, 2016
FindingTelephone18+ aged, heads of households, Germany, 2000-2008
FindingTelephonesAdults, general public, South Africa, 2002
FindingtelephoneAdults, two villages (one equal in incomes, one unequal), Israel, 1976