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versión On-line ISSN 1668-7027


MANOILOFF, Laura et al. PAPDI: Argentinean Psycholinguistic Image Naming Test. : Second part: Study of psychometric properties. Interdisciplinaria [online]. 2018, vol.35, n.2, pp.261-276. ISSN 1668-7027.

In the current paper we present the psychometric analysis of the Argentinean Psycholinguistic Image Naming Test (PAPDI). This test has two characteristics that makes it different from those currently available in our country: a) the stimuli has been chosen and ordered controlling certain psycholinguistic variables proven to have influence on this task, such as Visual Complexity, Image Agreement, Image Variability, Familiarity, Name Agreement, Age of Acquisition and Frequency of Use, following Argentinean normative data base; and b) semantic cues were elaborated according to semantic feature production norms also from Argentina. We present here the psychometric analysis of its properties. There were analyzed through the study of patients with Alzheimer Disease (n = 25) and focal brain lesions (n = 27) and healthy partici-pants (n = 125). On the first place, in order to study criteria validity a group comparison analysis was carried out. On the one hand Alzheimer Disease patients were compared with healthy participants. On the other hand, two focal brain damaged patients were compared: with and without aphasia. Convergent validity was also studied through the correlation with Boston naming test. In the third place, scores reliability was studied through two methods: internal consistency analysis, for Alzheimer, focal and healthy groups, and test-retest for focal brain damage group. Forth, it was analyzed the capacity to discriminate between patient with and without aphasia through ROC curves analysis. The respective sensitivity and specificity values to detect anomia were established. Fifth, the demographic variables´ influence was analyzed through a regression analysis. Moreover, there were analyzed the effects of two psycholinguistic variables that were taken into account to order the images but were not normalized: Lexical Frequency and Age of Acquisition. Finally, type of errors and response to cues were studied for focal brain damaged patients. The results indicated that the PAPDI presents acceptable psychometric properties to be used as a tool in neuropsychological assessment. It showed evidence of internal and external validity and it was observed scores reliability through internal consistency and test-retest. A suggested cutting point was established to detect anomia. Furthermore a main influence of educational level was reported. There were also detected effects of Lexical Frequency and Age of Acquisition which were observed for Alzheimer and aphasic patients groups. Moreover it was illustrated the response profile analysis for aphasic and nonaphasic focal brain damaged patients regarding a proposed taxonomy of error types. It was also studied the response to semantic and phonological cues and it was observed that both contributed to improve patients´ performance.

Palabras clave : Naming test; Argentinean norms; Validation; Semantic memory; Language.

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