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2018-05-15

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cc-by (c) Trafimow, D. et al., 2018
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/144500

Manipulating the alpha level cannot cure significance testing

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Recurs relacionat

https://doi.org/10.3389/fpsyg.2018.00699

Resum

We argue that making accept/reject decisions on scientific hypotheses, including a recent call for changing the canonical alpha level from p = 0.05 to p = 0.005, is deleterious for the finding of new discoveries and the progress of science. Given that blanket and variable alpha levels both are problematic, it is sensible to dispense with significance testing altogether. There are alternatives that address study design and sample size much more directly than significance testing does; but none of the statistical tools should be taken as the new magic method giving clear-cut mechanical answers. Inference should not be based on single studies at all, but on cumulative evidence from multiple independent studies. When evaluating the strength of the evidence, we should consider, for example, auxiliary assumptions, the strength of the experimental design, and implications for applications. To boil all this down to a binary decision based on a p-value threshold of 0.05, 0.01, 0.005, or anything else, is not acceptable.

Matèries

Presa de decisions (Estadística), Tests d'hipòtesi (Estadística)

Matèries (anglès)

Statistical decision, Statistical hypothesis testing

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Articles publicats en revistes (Psicologia Social i Psicologia Quantitativa)

Citació

TRAFIMOW, David, AMRHEIN, Valentin, ARESHENKOFF, Corson n., BARRERA-CAUSIL, Carlos j., BEH, Eric j., BILGIÇ, Yusuf k., BONO CABRÉ, Roser, BRADLEY, Michael t., BRIGGS, William m., CEPEDA-FREYRE, Héctor a., CHAIGNEAU, Sergio e., CIOCCA, Daniel r., CORREA, Juan carlos, COUSINEAU, Denis, DE BOER, Michiel r., DHAR, Subhra sankar, DOLGOV, Igor, GÓMEZ BENITO, Juana, GRENDAR, Marian, GRICE, James w., GUERRERO GIMÉNEZ, Martín e., GUTIÉRREZ, Andrés, HUEDO-MEDINA, Tania b., JAFFE, Klaus, JANYAN, Armina, KARIMNEZHAD, Ali, KORNER-NIEVERGELT, Fränzi, KOSUGI, Koji, LACHMAIR, Martin, LEDESMA, Rubén d., LIMONGI, Roberto, LIUZZA, Marco tullio, LOMBARDO, Rosaria, MARKS, Michael j., MEINLSCHMIDT, Gunther, NALBORCZYK, Ladislas, NGUYEN, Hung t., OSPINA, Raydonal, PÉREZ-GONZÁLEZ, José d.. Manipulating the alpha level cannot cure significance testing. _Frontiers in Psychology_. 2018. Vol. 9, núm. 699. [consulta: 8 de febrer de 2026]. ISSN: 1664-1078. [Disponible a: https://hdl.handle.net/2445/144500]

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