TEST is an international journal of Statistics and Probability, sponsored by the Spanish Society of Statistics and Operations Research (www.seio.es). Its scope includes both established and emerging areas, and English is the journal’s official language. TEST focuses on papers containing original theoretical contributions that demonstrate potential value for applications, and/or novel and innovative statistical methodology for solving real-world problems in a wide range of challenging disciplines. Methodological content is crucial for publication in the journal as is detailed coverage of practical implications. In addition to the regular contributions, each issue of TEST features an invited paper covering a current and challenging topic authored by an internationally recognized statistician. One volume is published annually in four issues. Officially cited as: Test Focuses on papers containing original theoretical contributions that demonstrate potential value for applications, and/or novel and innovative statistical methodology for solving real-world problems in a wide range of challenging disciplines. Covers both established and emerging areas in Statistics and Probability. Features an invited paper in each issue covering a current and challenging topic authored by an internationally recognized statistician.