Identifying the loci of associative facilitation and categorical interference in a picture naming task with the psychological refractory period (PRP)

Samuel Hansen (2011). Identifying the loci of associative facilitation and categorical interference in a picture naming task with the psychological refractory period (PRP) Honours Thesis, School of Psychology, The University of Queensland.

       
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Author Samuel Hansen
Thesis Title Identifying the loci of associative facilitation and categorical interference in a picture naming task with the psychological refractory period (PRP)
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 2011-10-12
Thesis type Honours Thesis
Supervisor Associate Professor Greig de Zubicaray
Total pages 73
Language eng
Subjects 1701 Psychology
Abstract/Summary Object naming is a fundamental feature of everyday speech. Many theories of spoken word production rely on experimental naming paradigms, such as the classic picture-word interference paradigm (PWI) in which to-be-named target pictures are paired with to-be-ignored distractor words, to provide information about the underlying stages of information processing (e.g. semantic, lexical, phonological) involved in word production. Different semantic relations between target PICTURES and words (categorically-related: RABBIT-mouse, associatively-related: RABBIT-carrot) produce different PWI effects (interference and facilitation, respectively) compared to unrelated distractors and theories of word production need to account for these distinct effects. Rival theories identify the source of associatively-related facilitation (AF) either at an early conceptual/semantic stage of processing, or at a later phonological stage of processing (distinct from CI). Thus, the aim of this project is to determine if AF is due to early conceptual priming (Abdel Rahman & Melinger, 2009; Mahon & Caramazza, 2009) or due to later excitation among phonological connections (Cutting & Ferreira, 1999). The locus-of-slack logic afforded by the dual-task psychological refractory period (PRP) paradigm was employed as a means of identifying the loci of AF and CI effects in the various stages of processing during picture naming. Results from both our PRP experiments that reversed PWI task order, largely replicated a similar PRP study by Dell‟Acqua et al. (2007) confirming a pre-central locus for CI effects. However, significant AF effects failed to emerge in either experiment. The implications of these findings for models of word production are discussed.
Keyword Information processing
Picture-word interference paradigm (PWI)

 
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