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Petscher, Yaacov; Logan, Jessica A. R. – Child Development, 2014
Linear regression analysis is one of the most common techniques applied in developmental research, but only allows for an estimate of the average relations between the predictor(s) and the outcome. This study describes quantile regression, which provides estimates of the relations between the predictor(s) and outcome, but across multiple points of…
Descriptors: Regression (Statistics), Evaluation Methods, Databases, Longitudinal Studies
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Turkheimer, Eric; D'Onofrio, Brian M.; Maes, Hermine H.; Eaves, Lindon J. – Child Development, 2005
Recent reports using a classical behavior genetic research design in which twin data are combined with a measured characteristic of their shared family environment have made striking claims about estimating environmental influences on behavior with genetic effects controlled. Such claims are overstated for two related reasons. First, when a…
Descriptors: Twins, Environmental Influences, Family Environment, Genetics
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Sontag, Lester – Child Development, 1971
Paper presented at the meeting of the American Psychological Association, Miami, Florida, September, 1970. (RY)
Descriptors: Case Studies, Child Development, Developmental Psychology, Evaluation Methods