Maxwell, Lau, and Howard stated that the large sample sizes typically needed to provide firm evidence in psychology research will almost always require coordinated efforts from multiple investigators rather than a single research team.
Notes on verification
Directly matches the published abstract of Maxwell, Lau, & Howard (2015) in American Psychologist, corroborated by multiple independent sources including PubMed and the original publication record.
Sources
- Is psychology suffering from a replication crisis? What does ... (pubmed.ncbi.nlm.nih.gov)
- https://www.researchgate.net/publication/281621785_Is_Psychology_Suffering_From_a_Replication_Crisis_What_Does_Failure_to_Replicate_Really_Mean (researchgate.net)
- https://forrt.org/curated_resources/is-psychology-suffering-from-a-replicati/ (forrt.org)
- https://scholar.google.com/scholar_lookup?title=Is+psychology+suffering+from+a+replication+crisis?+What+does+%E2%80%9Cfailure+to+replicate%E2%80%9D+really+mean?&author=Maxwell&publication_year=2015 (scholar.google.com)