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Table 2.

Four data-sharing policies adopted at Wiley and their features.

	Data availability statement is published^a	Data have been shared^b	Data have been peer reviewed^c	Example Wiley journals	The TOP Guideline Level
Encourages Data Sharing	Optional	Optional	Optional		Not TOP compliant, i.e. “Level 0”)
Expects Data Sharing	Required	Optional	Optional	British Journal of Social Psychology	TOP Level 1
Mandates Data Sharing	Required	Required	Optional	Ecology and Evolution	TOP Level 2.
Mandates Data Sharing and Peer Reviews Data	Required	Required	Required	Geoscience Data JournalAmerican Journal of Political Science	TOP Level 3.

	Data availability statement is published^a	Data have been shared^b	Data have been peer reviewed^c	Example Wiley journals	The TOP Guideline Level
Encourages Data Sharing	Optional	Optional	Optional		Not TOP compliant, i.e. “Level 0”)
Expects Data Sharing	Required	Optional	Optional	British Journal of Social Psychology	TOP Level 1
Mandates Data Sharing	Required	Required	Optional	Ecology and Evolution	TOP Level 2.
Mandates Data Sharing and Peer Reviews Data	Required	Required	Required	Geoscience Data JournalAmerican Journal of Political Science	TOP Level 3.

Note:

A data availability statement confirms the presence or absence of shared data.

Links to data in data availability statements are checked to ensure they link to the data that the authors intended. If data have been stored in a data repository, the data availability statement includes a permanent link to the data. Shared data are also cited.

Quality and/or replicability of linked data are peer reviewed. Depending on the journal, this may be to peer review the quality of the data by ensuring that the results in the paper and the data in the repository align (for example, sample sizes and variables match), or it may be to peer review the replicability of the data to ensure that the claims presented in the journal article are valid and can be reproduced.

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