You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Copyright_infringement

Context:
In a study published in the Journal of Behavioural and Experimental Economics, and reported on in early May 2014, researchers from the University of Portsmouth in the UK discussed findings from examining the illegal downloading behavior of 6,000 Finnish people, aged seven to 84. The list of reasons for downloading given by the study respondents included money saving; the ability to access material not on general release, or before it was released; and assisting artists to avoid involvement with record companies and movie studios.

Question:
What researchers conducted a study in the early part of May 2014?

University of Portsmouth