How Accessible is Psychology Data?

In a slightly depressing new paper, two researchers describe how they tried to get access to the data behind 111 of the most cited psychology and psychiatry papers published in the past decade. The researchers, Tom E. Hardwicke and John P. A. Ioannidis of Stanford, wanted to place the data into a 'Data Ark' to ensure its continued preservation for science. Unfortunately, in most cases, the data was not made available.The paper is called Populating the Data Ark and it's out now in PLoS ON