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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Padua research Archi...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
mEDRA
Article . 2009
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I limiti dell'approccio NHST e l'alternativa Bayesiana

Authors: PASTORE, MASSIMILIANO;

I limiti dell'approccio NHST e l'alternativa Bayesiana

Abstract

Nella ricerca psicologica l’approccio NHST è la modalità più frequente per l’inferenza statistica. Di fatto tale metodo si riduce ad una decisione sulla significatività dei risultati basata solo sulla valutazione del p-value. In realtà il p-value non è una misura dell’evidenza statistica perché influenzato da elementi esterni quali la numerosità campionaria, dati che non vengono osservati e le intenzioni soggettive del ricercatore (Wagenmakers, 2007). In questo lavoro sono presentate alcune esemplificazioni che illustrano come interpretare il p-value ed i problemi ad esso connessi. Una soluzione alternativa viene proposta con l’approccio Bayesiano, presentando un’applicazione della modalità per il confronto tra ipotesi nel caso del t-test. Utilizzando il paradigma Bayesiano diventa possibile valutare con una probabilità l’evidenza dell’ipotesi nulla in relazione a possibili ipotesi alternative.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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