General knowledge questionnaires have been ubiquitously used to study a wide variety of phenomena, such as illusory truth, error correction and tip-ofthe-tongue situations. However, their normings are highly restricted to the territory and the time period they in which they were obtained. This requires that new normings are obtained for each new territory in which they be used. Here, we present a new set of 1364 general knowledge questions normed for a Spanish population. The questions span a total of 37 different fields of knowledge and an extensive range of difficulty levels. They are formulated in a multiple-choice format, and pick rates for the correct answer as well as for the three incorrect response options are provided. We hope that a database of such size and flexibility will prove to be a useful research tool for the Spanish community.

Open Access