Study Bachman et al. (1978): study US 1966 /1

Public

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

Sample

Respondents

N = 2213

Non Response

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

Assessment

Interview: face-to-face
Interviews, tests and questionnaires

Correlate

Authors's Label

Number of books in home

Our Classification

Operationalization

Simple direct question at T1: How many books are in your home?
1 = none, or very few (0 - 10);
2 = a few (11 - 25);
3 = one bookcase full (26 - 100);
4 = two bookcases full (101 - 250);
5 = three or four bookcases full (251 -
    500)
6 = a room full; a library (501 or     more)

Observed Relation with Happiness