Authors of all papers published in the JAE are required to submit the data they used, unless they are confidential (see below). Authors are also encouraged to provide whatever other material is needed to ensure that their results can be replicated without excessive difficulty. This might include computer programs or technical appendices that are not part of the paper itself.
Before attempting to send me any data sets, please send me an e-mail message explaining how the data are organized and roughly how much space they take up. My e-mail address is firstname.lastname@example.org. The body of the message could be essentially a draft of the "readme" file that must accompany your data. Please start with bibliographical information in the following format:
John Smith, "An Econometric Analysis of the Price of Plutonium", Journal of Applied Econometrics, forthcoming.
All datasets must be accompanied by a readme file. This file should provide all the information needed to make use of the data. In particular, it should explain how many observations there are, what each variable is, how the data are organized in the data files, and the sources from which the data were taken. See the Data Archive for examples.
All data should be stored in plain ASCII (text) files that can be read on any computer system. The data may be stored in one or several files. Proprietary formats, especially ones that are not portable across machines (such as SAS datasets) are not acceptable by themselves. However, they may be provided in addition to the ASCII files if this would make it easier for many users to access the data. To avoid problems when reading the data, non-numeric characters, if any, should occur only at the end of the file or at the end of each line.
For most data sets, the simplest approach is probably to send them to me as MIME attachments to e-mail. If the files are no more than 80 columns wide, it should be possible to send them without MIME encoding. In this case, make sure that the beginnings and ends of data files are well marked. Large files should be zipped or gzipped before they are attached.
For extraordinarily large datasets, it may be necessary to use ftp, scp, or some other file transfer mechanism. It will be necessary to make special arrangements to handle such cases.
Supplementary material, such as computer programs and data appendices or technical appendices that are not published in the journal itself, should also be sent to me. Appendices should be in the form of PDF files.
Some data sets are confidential. Please check with the source of the data if you are not sure whether they may legally be made available on the Web.
When the data are confidential, we ask authors to provide a readme file that provides a reasonable amount of information about the data. In particular, the source of the data must be described in enough detail so that other researchers can apply to obtain access to them. As examples of what is appropriate, please see the following:
James G. MacKinnon
Software Review Editor,
Journal of Applied Econometrics
Department of Economics
Kingston, Ontario, Canada