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Monographs of the Society for Research in Child Development, 2010
This chapter covers the methods and measures used in the ERA study, with a special focus on age 15 outcomes. First, the authors outline the sample participation rate for the 15-year follow-up--the percentages in all cases referring to the numbers at the time of initial sample contact. They then describe the measures used in this monograph,…
Descriptors: Foreign Countries, Adoption, Followup Studies, Research Methodology
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Heatherley, Susan V.; Hancock, Katie M. F.; Rogers, Peter J. – Journal of Child Psychology and Psychiatry, 2006
Background: Recent research on adults suggests that "beneficial" psychostimulant effects of caffeine are found only in the context of caffeine deprivation; that is, caffeine improves psychomotor and cognitive performance in habitual caffeine consumers following caffeine withdrawal. Furthermore, no net benefit is gained because…
Descriptors: Cognitive Tests, Psychological Patterns, Children, Adults