Correlational findings

Study Klein (1984): study IL Petah Tikva 1980

6 months aged infants, Israel, followed from 1980-1981
Survey name
Unnamed study
N = 40
Non Response
Questionnaire: Paper & Pencil Interview (PAPI)


Authors's Label
Object Environment
Our Classification
Infants and their mothers were observed at their homes two times within 2weeks around the infant's 6-months-birthday and the 12-months-birthday. Observations were video-taped and include half-minute observations followed by 1-min recording time focusing on specific mother-child and child-environment interactions.
Observer's rating of objects around the child.
a Responsivity (degree of possible changes in the object as result of infant's actions, e.g. change in form or sound)
b Complexity (number of distinct parts, colors or textures of each)
c Variety (number of play objects)

Objects have been chosen by mother.

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks A-CA-g-rdf-v-3-a mr = + ns RESPONSIVITY
- 6 months:  mr=+.22 ns (stronger among boys)
- 12 months: mr=+.17 ns
A-CA-g-rdf-v-3-a mr = + COMPLEXITY
- 6 months:  mr=+.34 p<.05 (only among boys)
- 12 months: mr=+.05 ns
A-CA-g-rdf-v-3-a mr = + VARIETY
- 6 months:  mr=+.29 p<.05
- 12 months: mr=+.24 ns