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New Dir Child Adolesc Dev. 2015 Spring;2015(147):57-67. doi: 10.1002/cad.20085.

New directions for the study of within-individual variability in development: the power of "N = 1".

Author information

1
Department of Psychology, Pace University, New York, USA; Child Study Center, Yale University, New Haven, USA.

Abstract

This article provides an introduction to the idiographic approach ("N = 1" research) in developmental psychology and an overview of methodological and statistical techniques employed to address the study of within-individual variability in development. Through a popularization of the idiographic approach and associated statistical techniques, but also through technical advances in the apparatus used to produce single-case intensive longitudinal data, the "power" of "N = 1" is becoming increasingly tangible and may challenge, or supplement, established paradigms in nomothetic (group-level) developmental psychology.

PMID:
25732016
DOI:
10.1002/cad.20085
[Indexed for MEDLINE]

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