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Evaluating the credibility of statements given by persons with intellectual disability
Evaluación de la credibilidad de relatos de personas con discapacidad intelectual

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Manzanero, Antonio L. and Alemany, Alberto and Recio, María and Vallet Colchero, Rocío and Aróztegui Vélez, Javier (2015) Evaluating the credibility of statements given by persons with intellectual disability. Anales de psicología, 31 (1). pp. 338-344. ISSN 1695-2294

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Official URL: http://revistas.um.es/analesps/article/view/analesps.31.1.166571




Abstract

The objective of this study was to analyze the features that dis-tinguish statements given by actual and simulated victims with mild to moderate intellectual disability, using the credibility analysis procedure known as Reality Monitoring (RM). Two evaluators trained in credibility analysis procedures using content criteria evaluated 13 true statements and 16 false statements. The results obtained show that there is little difference between the two types of statements when analyzed on the basis of content criteria using the RM procedure. The only criteria that proved to be signifi-cant for discriminating between the two types of statements were the amount of details and the length of spontaneous statements obtained through free recall. None of the phenomenological characteristics studied turned out to be significant for discriminating between actual and simulat-ed victims. Graphic representation using high-dimensional visualization (HDV) with all criteria taken into consideration shows that the two types of statements are quite heterogeneous. Cluster analysis can group cases with a 68.75% chance of accuracy.

Resumen (otros idiomas)

El objetivo del presente trabajo consistió en analizar las caracte-rísticas diferenciales de los relatos emitidos por víctimas reales y simuladas con discapacidad intelectual ligera y moderada mediante el procedimiento de análisis de credibilidad de Control de la Realidad (RM). Dos evaluadores entrenados en los procedimientos de análisis de credibilidad mediante crite-rios de contenido evaluaron 13 relatos verdaderos y 16 relatos falsos. Los resultados encontrados muestran que existen pocas diferencias entre los dos tipos de relatos. Los únicos criterios que resultan significativos para discriminar entre los dos tipos de relatos son la cantidad de detalles y la longitud de las declaraciones espontáneas obtenidas mediante recuerdo li-bre. Ninguna de las características fenomenológicas examinadas resultó sig-nificativa para discriminar entre víctimas reales y simuladas. La representa-ción gráfica mediante visualización hiperdimensional (HDV) considerando conjuntamente todos los criterios muestra una gran heterogeneidad entre relatos. Un análisis de conglomerados permitió clasificar los dos tipos de re-latos con una probabilidad de acierto del 68.75 por ciento.

Item Type:Article
Uncontrolled Keywords:Credibility assessment; Intellectual disability; Content criteria; Eyewitness testimony; High-dimensional visualization
Palabras clave (otros idiomas):Evaluación de credibilidad; Discapacidad intelectual; Crite-rios de contenido; Testimonio; Visualización hiper-dimensional
Subjects:Medical sciences > Psychology > Cognitive psychology
Medical sciences > Psychology > Forensic psychology
Medical sciences > Psychology > Perception
Social sciences > Social service > Disabilities
ID Code:28579
Deposited On:08 Apr 2015 12:12
Last Modified:09 Apr 2015 07:20

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