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Open Practices

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Ensuring Transparency and Trust in Supervised-Machine-Learning Studies: A Checklist for Psychological Researchers

  • Hanyi Min
  • Feng Guo
  • Tianjun Sun
  • Mengqiao Liu
  • Frederick L. Oswald

Abstract

Machine-learning (ML) algorithms are being rapidly incorporated into the work of psychologists given their capability and flexibility in analyzing large-scale, complex, or otherwise messy data sets. In this context and in the spirit of open science, ML ...
Open AccessResearch articleFirst published Mar 12, 2026
Open materials
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Publication Bias in Academic Decision-Making in Clinical Psychology

  • Louis Schiekiera
  • Kristina Eichel
  • Felicitas Heßelmann
  • Jacqueline Sachse
  • Sophie P. Müller
  • Helen Niemeyer

Abstract

Review studies suggest that results that are statistically significant or consistent with hypotheses are preferred in the publication process and in reception. The mechanisms underlying this bias remain unclear, and prior research has focused on between-...
Open AccessResearch articleFirst published Sep 25, 2025
Open materialsPreregistred
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How Do Psychology Journals Handle Postpublication Critique? A Cross-Sectional Study of Policy and Practice

  • Annie Whamond
  • Simine Vazire
  • Beth Clarke
  • Nicholas Moodie
  • Sarah Schiavone
  • Robert T. Thibault
  • Tom E. Hardwicke

Abstract

Postpublication critique, such as letters to the editor, can contribute to the validity and trustworthiness of scientific research. We conducted a cross-sectional analysis of the policy and practice of postpublication critique in (a) randomly selected (N =...
Open AccessResearch articleFirst published Sep 17, 2025
Open dataOpen materialsPreregistred
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A Window Into the State of the Science: Current Reporting Practices Related to Generalizability in MRI and Functional-MRI Studies

  • Arianna M. Gard
  • Deena Shariq
  • Alison A. Albrecht
  • Alaina Lurie
  • Hyung Cho Kim
  • Colter Mitchell
  • Luke W. Hyde

Abstract

Concerns for the replicability, reliability, and generalizability of MRI and functional MRI (fMRI) research have led to debates over the contributions of sample size, open-science practices, and recruitment methods, particularly in the psychological ...
Open AccessResearch articleFirst published Sep 15, 2025
Open dataOpen materials
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Open Science in the Developing World: A Collection of Practical Guides for Researchers in Developing Countries

  • Hu Chuan-Peng
  • Zhiqi Xu
  • Aleksandra Lazić
  • Piyali Bhattacharya
  • Leonardo Seda
  • Samiul Hossain
  • Alma Jeftić
  • Asil Ali Özdoğru
  • Olavo B. Amaral
  • Nadica Miljković
  • Zlatomira G. Ilchovska
  • Ljiljana B. Lazarevic
  • Han Wu Shuang Bao
  • Nikita Ghodke
  • David Moreau
  • Mahmoud Elsherif
  • Chinchu C.
  • Sakshi Ghai
  • Clarissa F. D. Carneiro
  • Danka Purić
  • Yin Wang
  • Mirela Zaneva
  • Felipe Vilanova
  • Iris Žeželj
  • Obrad Vučkovac
  • Saida Heshmati
  • Pooja Kulkarni
  • Nadia Saraí Corral-Frías
  • Juan Diego García-Castro
  • Shubham Pandey
  • Jamal Amani Rad
  • Thipparapu Rajesh
  • Bita Vahdani
  • Saad Almajed
  • Amna Ben Amara
  • Leher Singh
  • Ali H. Al-Hoorie
  • Marcelo Camargo Batistuzzo
  • Daniel Fatori
  • Frankie T. K. Fong
  • Zahra Khorami
  • Joseph Almazan
  • Biljana Gjoneska
  • Meng Liu
  • Flavio Azevedo

Abstract

Over the past decade, the open-science movement has transformed the research landscape, although its impact has largely been confined to developed countries. Recently, researchers from developing countries have called for a redesign of open science to ...
Open AccessResearch articleFirst published Aug 18, 2025
Open materials
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A Cross-Sectional Study of the Completeness of Preregistrations by Psychological Authors From German-Speaking Institutions

  • Lena Hahn
  • Andreas Glöckner
  • Mario Gollwitzer
  • Jens Hellmann
  • Jens Lange
  • Simon Schindler
  • Kai Sassenberg

Abstract

Preregistering confirmatory research aims at reducing researchers’ degrees of freedom and increasing transparency to ultimately increase replicability. Yet the extent to which preregistrations actually achieve these goals depends on the completeness of a ...
Open AccessResearch articleFirst published Aug 14, 2025
Open dataPreregistred
PDF / EPUB

Bestiary of Questionable Research Practices in Psychology

  • Tamás Nagy
  • Jane Hergert
  • Mahmoud M. Elsherif
  • Lukas Wallrich
  • Kathleen Schmidt
  • Tal Waltzer
  • Jason W. Payne
  • Biljana Gjoneska
  • Yashvin Seetahul
  • Y. Andre Wang
  • Daniel Scharfenberg
  • Gabriella Tyson
  • Yu-Fang Yang
  • Aleksandrina Skvortsova
  • Samuel Alarie
  • Katherine Graves
  • Lukas K. Sotola
  • David Moreau
  • Eva Rubínová

Abstract

Questionable research practices (QRPs) pose a significant threat to the quality of scientific research. However, historically, they remain ill-defined, and a comprehensive list of QRPs is lacking. In this article, we address this concern by defining, ...
Open AccessResearch articleFirst published Jul 9, 2025
Open data
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Mixed-Methods Research in Psychology: Rationales and Research Designs

  • Moin Syed
  • Dulce Wilkinson Westberg

Abstract

Psychological science has long maintained a preference for quantitative methods over qualitative methods. The allegiance to one methodological family and the rejection of another means that at least, in part, the field’s methods are constraining the ...
Open AccessResearch articleFirst published Jun 11, 2025
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The Benefits of Reporting Critical-Effect-Size Values

  • Ambra Perugini
  • Filippo Gambarota
  • Enrico Toffalini
  • Daniël Lakens
  • Massimiliano Pastore
  • Livio Finos
  • Core Team Psicostat
  • Gianmarco Altoè

Abstract

Critical-effect-size values represent the smallest detectable effect that can reach statistical significance given a specific sample size, alpha level, and test statistic. It can be useful to calculate the critical effect size when designing a study and ...
Open AccessResearch articleFirst published May 27, 2025
Open materials
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De-Identification When Making Data Sets Findable, Accessible, Interoperable, and Reusable (FAIR): Two Worked Examples From the Behavioral and Social Sciences

  • Don van Ravenzwaaij
  • Marlon de Jong
  • Rink Hoekstra
  • Susanne Scheibe
  • Mark M. Span
  • Ineke Wessel
  • Vera Ellen Heininga

Abstract

In recent years, the advancement of open science has led to data sharing becoming more common practice. Data availability has clear merits for science because it opens up possibilities for reuse of data sets by others, leading to less redundancy, more ...
Open AccessResearch articleFirst published May 15, 2025
Open data
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