Findings on happiness in Emde et al. (1992): study US Colorado 1986

Publication
Author(s)Emde, R.N.; Campos, J.J.; Corley, R.P.; DeFries, J.; Fulker, D. W.; Kagan, J.; Plomin, R.; Reznick, J.S.; Robinson, J.L.; Zahn-Waxler, C.
TitleTemperament, Emotion, and Cognition at Fourteen Months: The MacArthur Longitudinal Twin Study
SourceChild Development, Vol. 63, No. 6 (Dec., 1992), pp.1437-1455
URLhttp://www.jstor.org/stable/1131567
Investigation
Public14 months aged, same-sex twin pairs, Colorado, United States, 1986-1989
Last assesment1989
Survey nameNot available
 "The MacArthur Longitudinal Twin Study"
SampleNon-probability purposive sample
 90% of sample is Caucasian, 1% is black, other participating families are primarily Hispanic
Respondents N =398
 199 same-sex twin pairs, 106 female pairs (61 monozygotic, 45 dizygotic), 94 male pairs
Non ResponseNot available
AssesmentBehavioural observation
 At 14 months: observation at home, 2 weeks later observation in laboratory
Happiness measure(s) used
Full textTime sampled ratings of positive and negative affect made from video recordings of child behavior; 30 second intervals across 15 minutes of free play and 1minute intervals for 4 alternate 5 minute segments of the Bayley test Assessment of discrete behaviors; observation schedule not reported Rated on 4 step scale, scale labels not reported
ClassificationA-AB-mi-tsb-?-4-a
Author's labelHedonic tone, positive and negative
Page in publication1443, 1446
RemarksAffect Balance computed by WDH team; Positive Affect: M=2.32 sd=.25 Negative Affect: M=1.37 sd=.32
Finding used in
nation ranks
Yes
 On original range 1 - 4On range 0 - 10
Mean0.95
Standard deviation


Full textTime sampling of prevalent mood during free play and Bayley test. Average of observations at 30 second intervals across 15 minutes of free play and 1 minute intervals for 4 alternate 5 minute segments of the Bayley test Rated on 7 step scale, scale labels not reported
ClassificationA-CA-mi-tsb-v-7-a
Author's labelOverall mood
Page in publication1443, 1446
Finding used in
nation ranks
Yes
 On original range 1 - 7On range 0 - 10
Mean4.75
Standard deviation1.10


Correlational findings

Author's labelSubject Code
Finding
Subject description
Happiness of Twin siblingsH08ac04Happiness of sibblings
Happiness of Twin siblingsF01af02dHappiness of siblings, also classified as above ↑