Semantic feature production norms provide many quantitative measures of different feature and concept variables that are necessary to solve some debates surrounding the nature of the organization, both normal and pathological, of semantic memory. Despite the current existence of norms for different languages, there are still no published norms in Spanish. This article presents a new set of norms collected from 810 participants for 400 living and nonliving concepts among Spanish speakers. These norms consist of empirical collections of features that participants used to describe the concepts. Four files were elaborated: a concept-feature file, a concept-concept matrix, a feature-feature matrix, and a significantly correlated features file. We expect that these norms will be useful for researchers in the fields of experimental psychology, neuropsychology, and psycholinguistics.
The processes tapped by the widely-used word association (WA) paradigm remain a matter of debate: while some authors consider them as driven by lexical co-occurrences, others emphasize the role of meaning-based connections. To test these contrastive hypotheses, we analyzed responses in a WA task in terms of their normative defining features (those describing the object denoted by the cue word). Results indicate that 72.5% of the responses had medium-to-high coincidence with such defining semantic features. Moreover, 75.51% of responses had medium-to-high values of Relevance (a measure of the importance of the feature for construing a given concept). Furthermore, most responses (62.7%) referred to elements of the situation in which the concept usually appears, followed by sensory properties (e.g., color) of the denoted object (27.86%). These results suggest that the processes behind WA tasks involve a reactivation of the cue item's semantic properties, particularly those most relevant to its core meaning.
A saw is first identified as an object used on wood: ERP evidence for temporal differences between thematic and functional similarity relations. Neuropsychologia, 71,[28][29][30][31][32][33][34][35][36][37]
Post stroke brain damage can affect the semantic system. This happens particularly in aphasic patients. The aim of this paper is to analyze in such patients the processing of two types of conceptual relations: taxonomic and thematic. We administered a series of tasks to assess the ability to establish and recognize conceptual rela-Análisis del procesamiento de relaciones conceptuales en pacientes con afasia
Analysis of Conceptual Relation Processing in Aphasic PatientsAnálise do processamento de relações conceituais em pacientes com afasia
Resumen. Las relaciones conceptuales son los vínculos que conectan a los conceptos entre sí. Hay dos de ellas que tienen particular relevancia para la organización del conocimiento conceptual: las taxonómicas y las temáticas. Las investigaciones iniciales realizadas en la década del 80 se centraron en analizar si existía una primacía de un tipo de relaciones sobre el otro tanto en niños como en adultos. Los estudios más recientes están investigando sus bases neuroanatómicas. El presente trabajo constituye una revisión de los trabajos más relevantes sobre las relaciones conceptuales taxonómicas y temáticas, abarcando los estudios sobre distintas etapas del desarrollo, las bases neuroanatómicas y las formas de evaluación disponibles. Los artículos revisados afirman que las relaciones conceptuales taxonómicas y temáticas implican procesos cognitivos que pueden ser disociados, por lo tanto, se adquieren y dañan de manera independiente y tienen correlatos neuroanatómicos independientes. Se sugieren también posibles líneas de investigación futuras. Palabras clave: relaciones conceptuales, relaciones taxonómicas, relaciones temáticas, conocimiento conceptual, semántica.Abstract. The links that connect concepts are called conceptual relations. Two of them have particular relevance in the organization of conceptual knowledge: taxonomic and thematic relations. Early research in the 80`s focused on analyzing the existence of a primacy of one kind of conceptual relation over the other in children and adults. Recent studies explore the neuroanatomical bases of these conceptual relations. The present work constitutes a revision of the most relevant studies about taxonomic and thematic conceptual relations, including developmental studies, research on neuroanatomical bases and available ways of assessment. The revised articles state that thematic and taxonomic conceptual relations involve dissociable cognitive processes that can be acquired and damaged independently and have independent neuroanatomical basis. Futures lines of research are also suggested.
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