Tom Hardwicke
Senior Lecturer
University of Sydney
Publications
Preprints
Galet-Lalande, I., Blackwell, J. C., & Hardwicke, T. E.
(preprint). Open science in a contentious field: How
transparent is research on social media and adolescent mental
health? PsyArXiv.
preprint
preregistration
materials
data
analysis-code
reproducible-container
Kotoulas, B., Blackwell, J. C., & Hardwicke, T. E.
(preprint). Has transparency improved in clinical psychology?
A repeated cross-sectional study (2012, 2018, 2024).
PsyArXiv.
preprint
preregistration
materials
data
analysis-code
reproducible-container
Hardwicke, T. E. (preprint). Risk of bias in robustness
reports. MetaArXiv.
preprint
Fernández, L. M., Hardwicke, T. E., & Vadillo, M. A.
(preprint). Retracted papers clinging on to life: An
observational study of post-retraction citations in
psychology. PsyArXiv.
preprint
data
analysis-code
2026
Reiss, M. V., …Hardwicke, T. E…. Roggenkamp, H. (in press). Improving computational reproducibility in the social sciences. Nature Human Behaviour.
2025
Whamond, A., Vazire, S., Clarke, B., Moodie, N., Schiavone,
S., Thibault, R. T., Hardwicke, T. E. (2025). How do
psychology journals handle post-publication critique? A
cross-sectional study of policy and practice. Advances in
Methods and Practices in Psychological Science,
8(3).
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Sandoval-Lentisco, A., Tortajada, M., López-Nicolás, R.,
López-López, J. A., Wagenmakers, E.J., Sánchez-Meca, J., &
Hardwicke, T. E. (2025). Preregistration of psychology
meta-analyses: A cross-sectional study of prevalence and
practice. Advances in Methods and Practices in
Psychological Science. 8(1).
paper
preprint
preregistration
materials
data
analysis-code
Frank, M. C., Braginsky, M., Cachia, J., Coles, N.,
Hardwicke, T. E., Hawkins, R., Mathur, M., & Williams, R.
(2025). Experimentology: An open science approach to
experimental psychology methods. MIT Press.
open
access book
2024
Hardwicke, T. E., Thibault, R. T., Clarke, B., Moodie, N.,
Crüwell, S., Schiavone, S. R., Handcock, S. A., Nghiem, K. A.,
Mody, F., Erole, T., & Vazire, S. (2024). Prevalence of
transparent research practices in psychology: A
cross-sectional study of empirical articles published in 2022.
Advances in Methods and Practices in Psychological
Science, 7(4).
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Hardwicke, T. E. & Vazire, S. (2024). Open science. In
Frank, M. C. & Majid, A. (Eds). The Open Encyclopedia
of Cognitive Science. MIT Press.
open
access book chapter
Hardwicke, T. E., Schiavone, S. R., Clarke, B., &
Vazire, S. (2024). An empirical appraisal of eLife’s
assessment vocabulary [Registered Report]. PLOS
Biology, 22(8), e3002645.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Dulitzki, C., Crane, S. M., Hardwicke, T. E., &
Ioannidis, J. P. A. (2024). Expanding the Data Ark: An attempt
to make the data from highly cited social science papers
publicly available. Royal Society Open Science,
11(5), 240016.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Hardwicke, T. E., & Vazire, S. (2024). Transparency is
now the default at Psychological Science [editorial].
Psychological Science, 35(7), 703-824.
paper
2023
Thibault, R. T., Kovacs, M., Hardwicke, T. E., Sarafoglou,
A., Ioannidis, J. P., & Munafo, M. R. (2023). Reducing
bias in secondary data analysis via an Explore and Confirm
Analysis Workflow (ECAW): A proposal and survey of
observational researchers. Royal Society Open
Science, 10, 230568.
paper
preprint
preregistration
materials
data
analysis-code
Hardwicke, T. E., & Wagenmakers, E.-J. (2023). Reducing
bias, increasing transparency, and calibrating confidence with
preregistration. Nature Human Behaviour, 7,
15-26.
paper
preprint
Hardwicke, T. E., Salholz-Hillel, M., Malički, M., Szűcs,
D., Bendixen, T., Ioannidis, J. P. A. (2023). Statistical
guidance to authors at top-ranked journals across scientific
disciplines. The American Statistician.
77(3), 239-247.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
2022
Hardwicke, T. E., Thibault, R. T., Kosie, J. E., Tzavella,
L., Bendixen, T., Handcock, S. A. Köneke, V. E., Ioannidis, J.
P. A. (2022). Post-publication critique at top-ranked journals
across scientific disciplines: A cross-sectional assessment of
policies and practice. Royal Society Open Science,
9, 220139.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
TARG Meta-Research Group & Collaborators [Thibault, R.
T., Hardwicke, T. E., Clark, R. W. A., Pennington, C. R.,
Nilsonne, G., O’Mahony, A., Drax, K., Thompson, J., Munafò, M.
R.] (2022). Discrepancy review: A feasibility study of a novel
peer review intervention to reduce undisclosed discrepancies
between registrations and publications. Royal Society Open
Science, 9, 220142.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Nosek, B. A., Hardwicke, T. E., Moshontz, H., Allard, A.,
Corker, K. S., Dreber, A., Fidler, F., Hilgard, J., Kline
Struhl, M., Nuijten, M., Rohrer, J., Romero, F., Scheel., A.,
Scherer, L., Schönbrodt, F., & Vazire, S. (2022).
Replicability, robustness, and reproducibility in
psychological science. Annual Review of Psychology,
73, 719-748.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Hardwicke, T. E., Thibault, R. T., Kosie, J. E., Wallach,
J. D., Kidwell, M. C., & Ioannidis, J. P. A. (2022).
Estimating the prevalence of transparency and
reproducibility-related research practices in psychology
(2014-2017). Perspectives on Psychological Science,
17(1), 239-251.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
2021
Hardwicke, T. E., Szucs D., Thibault, R. T., Crüwell, S.,
van den Akker, O. R., Nuijten, M. B., & Ioannidis, J. P.
A. (2021). Citation patterns following a strongly
contradictory replication result: Four case studies from
psychology. Advances in Methods and Practices in
Psychological Science, 4, 1-14.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
Hardwicke, T. E., Bohn, M., MacDonald, K., Hembacher, E.,
Nuijten, M. B., Peloquin, B. N., deMayo, B., Long, B., Yoon,
E. J., & Frank, M. C. (2021). Analytic reproducibility in
articles receiving open data badges at the journal
Psychological Science: An observational study. Royal
Society Open Science, 8, 201494.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
2020
Hardwicke, T. E., & Goodman, S. N. (2020). How often do
leading biomedical journals use statistical experts to
evaluate statistical methods? The results of a survey.
PLOS ONE, 15, e0239598.
paper
preprint
materials
data
analysis-code
reproducible-container
Hardwicke, T. E., Serghiou, S., Janiaud, P., Danchev, V.,
Crüwell, S., Goodman, S. N., & Ioannidis, J. P. A. (2020).
Calibrating the scientific ecosystem through meta-research.
Annual Review of Statistics and its Application,
7, 11-37.
paper
preprint
Ferrero, M., Hardwicke, T. E., Konstantinidis, E., &
Vadillo, M. A. (2020). The effectiveness of refutation texts
to correct misconceptions among educators. Journal of
Experimental Psychology: Applied, 26,
411-421.
paper
preprint
materials
data
analysis-code
Hardwicke, T. E., Wallach, J. D., Kidwell, M. C., Bendixen,
T., Crüwell, S., & Ioannidis, J. P. A. (2020). An
empirical assessment of transparency and
reproducibility-related research practices in the social
sciences (2014-2017). Royal Society Open Science,
7, 190806.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
2019
Hardwicke, T. E., & Ioannidis, J. P. A. (2019).
Petitions in scientific argumentation: dissecting the request
to retire statistical significance. European Journal of
Clinical Investigation, 49, e13162.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
comment#1
comment#2
comment#3
Nosek, B. A., Beck, E. D., Campbell, L., Flake, J. K.,
Hardwicke, T. E., Mellor, D. T., van ‘t Veer, A. E., &
Vazire, S. (2019). Preregistration is hard, and worthwhile.
Trends in Cognitive Sciences, 23,
815-818.
paper
preprint
Hardwicke, T. E., Frank, M. C., Vazire, S., & Goodman,
S. N. (2019). Should psychology journals adopt specialized
statistical review? Advances in Methods and Practices in
Psychological Science, 2, 240-249.
paper
materials
data
analysis-code
reproducible-container
2018
Hardwicke, T. E. & Ioannidis, J. P. A. (2018). Mapping
the universe of registered reports. Nature Human
Behaviour, 2, 793–796.
paper
preprint
materials
data
analysis-code
reproducible-container
comment#1
comment#2
Hardwicke, T. E., Mathur, M. B., MacDonald, K., Nilsonne,
G., Banks, G. C., Kidwell, M. C., Hofelich Mohr, A., Clayton,
E., Yoon, E. J., Henry Tessler, M., Lenne, R. L., Altman, S.,
Long, B., & Frank, M. C. (2018). Data availability,
reusability, and analytic reproducibility: Evaluating the
impact of a mandatory open data policy at the journal
Cognition. Royal Society Open Science, 5,
180448.
paper
preprint
preregistration
materials
data
analysis-code
reproducible-container
comment
Hardwicke, T. E. & Ioannidis, J. P. A. (2018).
Populating the Data Ark: An attempt to retrieve, preserve, and
liberate data from the most highly-cited psychology and
psychiatry articles. PLOS ONE, 13,
e0201856.
paper
materials
data
analysis-code
reproducible-container
Hardwicke, T. E., Henry Tessler, M., Peloquin, B., &
Frank, M. C. (2018). A Bayesian decision-making framework for
replication. Behavioral and Brain Sciences,
41, e132.
paper
preprint
Klein, O., Hardwicke, T. E., Aust, F., Breuer, J.,
Danielsson, H., Hofelich Mohr, A., IJzerman, H., Nilsonne, G.,
Vanpaemel, W., & Frank, M. C. (2018). A practical guide
for transparency in psychological science. Collabra:
Psychology, 4, 20.
paper
materials
2017
Cristea, I. A., Naudet, F., Shanks, D. R., & Hardwicke,
T. E. (2017). Post-retrieval Tetris should not be likened to a
‘cognitive vaccine’. Molecular Psychiatry,
23, 1972-1973.
paper
data
analysis-code
2016
Kidwell, M. C., Lazarević, L. B., Baranski, E., Hardwicke,
T. E., Piechowski, S., Falkenberg, L-S., Kennett, C., Slowik,
A., Sonnleitner, C., Hess-Holden, C., Errington, T. M.,
Fiedler, S., & Nosek, B. A. (2016). Badges to acknowledge
open practices: A simple, low cost, effective method for
increasing transparency. PLOS Biology, 14,
e1002456.
paper
preprint
preregistration
materials
data
analysis-code
Hardwicke, T. E. & Shanks, D. R. (2016). Reply to
Walker and Stickgold: Proposed boundary conditions on memory
reconsolidation will require empirical verification.
PNAS, 113, E3993-E3994.
paper
pdf
Hardwicke, T. E., Mahdi, T., & Shanks, D. R. (2016).
Post-retrieval new learning does not reliably induce human
memory updating via reconsolidation. PNAS,
113, 5206-5211.
paper
pdf
preprint
materials
data
analysis-code
comment
Vadillo, M. A., Hardwicke, T. E., & Shanks, D. R.
(2016). Selection bias, vote counting, and money priming
effects: A comment on Rohrer, Pashler, and Harris (2015) and
Vohs (2015). Journal of Experimental Psychology:
General, 145, 655-663.
paper
pdf
data
Hardwicke, T. E. (2016). Persistence and plasticity in the
human memory system: An empirical investigation of the
overwriting hypothesis. PhD Thesis.
thesis
data
analysis-code
Before 2016
Baker, R., Dexter, M., Hardwicke, T. E., Goldstone, A.,
& Kourtzi, Z. (2014). Learning to predict: Exposure to
temporal sequences facilitates prediction of future events.
Vision Research, 99, 124-133.
paper
pdf
Ludwig, C. J. H., Farrell, S., Ellis, L. A., Hardwicke, T.
E., & Gilchrist, I. D. (2012). Context-gated statistical
learning and its role in visual-saccadic decisions.
Journal of Experimental Psychology: General,
141, 150-169.
paper
pdf
Hardwicke, T. E., Jameel, L., Jones, M., Walczak, E. J.,
& Magis-Weinberg, L. (2014). Only human: Scientists,
systems, and suspect statistics. Opticon1826,
16, 1-12.
pdf
Hardwicke, T. E. (2012). Biological Psychology.
Psychology Learning & Teaching, 11,
112-113.
paper