title: [A new shortened version of the Boston Naming Test for those aged over 65: an approach from item response theory].
abstract: BACKGROUND
  One of the tests that is mostly widely used to evaluate aphasia in clinical practice is the Boston Naming Test (BNT), a classic test in which 60 black and white pictures are presented to subjects in order to evaluate their capacity to put a name to such pictures. Despite its psychometric goodness, the number of items in the test has to be reduced in order to lower the time required to apply it.
  
  
  METHODS
  Researchers recruited a sample of 547 subjects over the age of 65, who were then administered a neuropsychological evaluation protocol, including the BNT, to determine their cognitive statuses. No relevant cognitive alterations were observed in 405 subjects versus 142 who were diagnosed with mild cognitive impairment.
  
  
  RESULTS
  The number of items was reduced in accordance with the premises of the item response theory. Since both age and level of schooling were found to have a significant effect on performance in the test, the two variables were used to find the cut-off points of the shortened version. This new version presented an adequate degree of reliability (alpha = 0.765) and a high correlation with the original test (r = 0.876).
  
  
  CONCLUSIONS
  The new shortened version consists of 15 items that are ordered according to the degree of difficulty. It is a task with a high level of discriminating power that is useful in day-to-day clinical practice for detecting alterations in the language of the elderly.
authors.affiliation: Centro de Prevención del Deterioro Cognitivo, Madrid Salud, Ayuntamiento de Madrid, Madrid, España. ma.fdez.blazquez@gmail.com
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Fernández-Blázquez
authors.forename: José M
authors.initials: JM
authors.lastname: Ruiz-Sánchez de León
authors.forename: José A
authors.initials: JA
authors.lastname: López-Pina
authors.forename: Marcos
authors.initials: M
authors.lastname: Llanero-Luque
authors.forename: Mercedes
authors.initials: M
authors.lastname: Montenegro-Peña
authors.forename: Pedro
authors.initials: P
authors.lastname: Montejo-Carrasco
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology; D001037:Aphasia / Q000175:diagnosis*; D003072:Cognition Disorders / Q000175:diagnosis; D015986:Confounding Factors, Epidemiologic; D003937:Diagnosis, Differential; D004522:Educational Status; D005260:Female; D006801:Humans; D007807:Language Tests; D008297:Male; D008569:Memory Disorders / Q000175:diagnosis; D008960:Models, Psychological; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D013030:Spain; D013997:Time Factors; D014825:Vocabulary