Study Bachman et al. (1978): study US 1966

Public:

Public highschool boys followed 8 years from grade 10, USA, 1966-74

Sample:

Respondents:

N = 1628

Non Response:

2.8% at T1, 17.2% at T2, 21.0% at T3, 28.9% at T4, 28.5% at T5

Assessment:

Multiple methods
Interviews, tests and questionnaires

Correlate

Authors's label

Intelligence

Our Classification

Operationalization

Respondent's scores on three tests of intelligence (the Quick Test of intelligence, section J (vocubalary)
of the General Aptitude Test Battery, and the Gates test of reading comprehension) and mean of these scores. Assessed at T1

Observed Relation with Happiness