An analysis by Nuijten et al. (2016) of over 250K p-values reported in 8 major psych journals from 1985 to 2013 found that:
half the papers had at least one inconsistent p-value
1/8 of papers had errors that could affect conclusions
errors more likely to be erroneously significant than not
Analysis Reproducibility
Of 35 articles published in Cognition with usable data (but no code, Hardwicke et al. (2018) found:
only 11 could be reproduced independently
11 were reproducible with the original authors’ help
13 were not reproducible even by the original authors
Code Reproducibility
Of 62 Registered Reports in psychology published from 2014–2018, 36 had data and analysis code, 31 could be run, and 21 reproduced all the main results (Obels et al, 2020)