Weakening Forensic Science in Spain: From Expert Evidence to Documentary Evidence*
Abstract: An amendment in 2002 to the Spanish Code of Criminal Procedure converted into documentary evidence the expert reports prepared by official laboratories aimed at determining the nature, weight, and purity of seized drugs. In most cases, experts are spared from
appearance before the courts. This is likely to be extended to other forensic fields. After an overview of criminalistic identification in current forensic science, the objectivity and reliability concepts used by jurists and scientists are considered by comparing the paradigm of individualization
with that of likelihood. Subsequently, a detailed critical study is made on the above‐mentioned Spanish legal reform, and a comparison is made with the decision on the Melendez‐Diaz v. Massachusetts case as ruled by the Supreme Court of the United States. Although the
reform is in compliance with the Spanish Constitution, it is at odds with science, in particular regarding the logic underpinning the scientific evaluation of evidence.
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Document Type: Research Article
Servicio de Criminalistica de la Guardia Civil, Dirección General de la Policía y Guardia Civil, Guzmán el Bueno 110, 28003 Madrid, Spain.
Faculty of Law, Universidad de Valencia, Edificio Departamenal Occidental, Campus del Tarongers, Avenida del Tarongers s/n, 46071 Valencia, Spain.
Instituto de Ciencias Forenses y de la Seguridad (ICFS), Universidad Autónoma de Madrid, Campus de Cantoblanco, Calle Iván Pavlov n° 6, 28049 Madrid, Spain.
Publication date: 2012-07-01