Study Kohler et al. (2005): study DK 2002

Public

20-70 aged identical twins, Denmark, 2002

Sample

Respondents

N = 3226

Non Response

26%

Assessment

Questionnaire: Paper & Pencil Interview (PAPI)

Correlate

Authors's Label

similarity in happiness

Our Classification

Distribution

FEMALE 25-45 YEARS: M=1.45, SDwithintwinpair=.52, SDoverall=.59; MALE 25-45 YEARS: M=1.45, SDwithintwinpair=.52, SDoverall=.59; FEMALE 50-70 YEARS: M=1.46, SDwithintwinpair=.49, SDoverall=.57; MALE 50-70 YEARS: M=1.51, SDwithintwinpair=.48, SDoverall=.55

Related specification variables

Operationalization

within-twinpair correlation

Observed Relation with Happiness