Study Feldman (1984): study US California 1921

Public

Gifted children (IQ >140), California, USA, followed ± 60 years, 1921-1972

Sample

Respondents

N = 52

Non Response

Attrition at T9: 25%

Assessment

Interview: face-to-face
Repeated interviews and questionaires

Correlate

Authors's Label

Intelligence

Our Classification

Operationalization

IQ score on the Stanford-Binet test at age 12
1. gifted      (IQ > 140)  N = 26
2. very gifted (IQ > 180)  N = 26

Gifted drawn at random from 1500 gifted subjects (Terman genius sample). The very gifted are all subjects in this group that scored 180 or more.

Observed Relation with Happiness