Nonparametric Statistical Tests for Single-Case Systematic and Randomized ABAB...AB and Alternating Treatment Intervention Designs: New Developments, New Directions

Autor/inn/en	Levin, Joel R.; Ferron, John M.; Kratochwill, Thomas R.
Titel	Nonparametric Statistical Tests for Single-Case Systematic and Randomized ABAB...AB and Alternating Treatment Intervention Designs: New Developments, New Directions
Quelle	In: Journal of School Psychology, 50 (2012) 5, S.599-624 (26 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	Weitere Informationen
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-4405
DOI	10.1016/j.jsp.2012.05.001
Schlagwörter	Intervention; Research Design; Nonparametric Statistics; School Psychology; Monte Carlo Methods; Statistical Analysis; Behavioral Science Research; Pupil Personnel Services + Suchen Sie Ihr Suchwort? Forschungsdesign; Schulpsychologie; Monte-Carlo-Methode; Statistische Analyse
Abstract	In this four-investigation Monte Carlo simulation study, we examined the properties of nonparametric randomization and permutation statistical tests applied to single-case ABAB...AB and alternating treatment designs based on either systematically alternating or randomly determined phase assignments. Contrary to previous admonitions, when appropriately conceptualized nonparametric tests were conducted the systematic designs maintained Type I error rates at or less than their nominal values whenever either no or positive autocorrelation was present in the series. Statistical power for all designs varied as a function of both the number of phases and the number of observations per phase. It was concluded that to increase methodological rigor and statistical precision in the face of autocorrelation, (a) whenever possible, researchers should adopt a randomization scheme in assigning the orders in which the A and B phases are administered and (b) in situations where randomized phase assignment is not feasible, researchers should adopt a systematic phase assignment scheme consisting of individually alternating A and B observations, with a cost of sacrificing some degree of statistical power. Implications for single-case intervention research in school psychology are discussed. (Contains 2 tables and 15 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10