- Robinson, J.L.; Corley, R.P.; Emde, R.N.
- Dispositional Cheerfulness. Early Genetic and Environmental Influences.
- Emde, R.N.; Hewitt, J.K.: Eds.: ''Infancy to Early Childhood'', Oxford University Press, 2001, New York, USA, 163 - 177
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- Yes, included as study.