Findings on happiness in Rozga et al. (2010): study US California 2005

Author(s)Rozga, A.; Dapretto, M.; Hutman, T.; Ozonoff, S.; Rogers, S.J; Sigman, M.; Young, G.S.
TitleBehavioral Profiles of Affected and Unaffected Siblings of Children with Autism: Contribution of Measures of Mother-Infant Interaction and Nonverbal Communication, Published online: 22 June 2010
DOIdoi: 10.1007/s10803-010-1051-6
Public6 months aged infants, California, United States, 200?
 year of data gathering not reported, estimated 2005
Survey nameUnnamed study
SampleNon-probability purposive-expert sample
 Participants are a subsample of the ongoing longitudinal study of the development of infants having siblings with autism, executed at University of California, Los Angeles & University of California, Davis High-risk for autism and low-risk infants were selected
Respondents N =167
 ASD (N=9): siblings of children diagnosed with autism who go on to be diagnosed with autism or ASD NoASD-sib (N=46): siblings of children diagnosed with autism who are non-diagnosed TD (N=28): low-risk control group (not having siblings diagnosed with autism)
Non ResponseNot available
AssesmentBehavioural observation
 infant behaviour was video recorded and later rated by a coder who was blind to the infants' developmental outcomes
Happiness measure(s) used
Full textRating on infants facial affect in 3 situations 1 negative 2 neutral 3 positive Computation: Average of percentage of positive affect
Author's labelAffect
Page in publication291, 293
RemarksAverage of rated affect in 3 situations: play, still and reunion with mother, computed by WDH team
Finding used in
nation ranks
 On original range 0 - 1On range 0 - 10
Standard deviation16.001.60

Correlational findings

Author's labelSubject Code
Subject description
Infant's Autistic SymptomatologyH13ac09aAutistic