Examining the Effects of Category Level Naming in Continuous and Blocked Cyclic Naming Paradigms

Riley, Emma (2013). Examining the Effects of Category Level Naming in Continuous and Blocked Cyclic Naming Paradigms Honours Thesis, School of Psychology, The University of Queensland.

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Author Riley, Emma
Thesis Title Examining the Effects of Category Level Naming in Continuous and Blocked Cyclic Naming Paradigms
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 2013-10-09
Thesis type Honours Thesis
Supervisor Greig de Zubicaray
Total pages 74
Language eng
Subjects 1701 Psychology
Abstract/Summary When participants name pictures in the context of a distractor word in the Picture Word Interference (PWI) task, naming latencies for categorically related items are slower (i.e., an interference effect) than for categorically unrelated items. However, there is a reversal in polarity of this effect to facilitation when the task is changed to picture categorisation (i.e., participants are faster to categorise semantically related, compared to unrelated, target and distractor word pairs). Three experiments were conducted in the current study, aimed at investigating whether facilitation is induced when categorisation is employed in other picture naming tasks that manipulate semantic context. If facilitation is induced in both tasks, we can claim an identical origin and locus for context effects. In Experiment 1, we employed a living vs. non-living categorisation response within a continuous naming task (i.e., participants respond to an ordinal series of related pictures), which revealed a significant facilitation effect, suggesting a conceptual origin and locus. Experiment 2 and 3 utilised the blocked cyclic naming paradigm (i.e., where pictures are blocked according to categorically homogeneous and heterogeneous contexts). Only two studies (Belke, 2013; Damian et al., 2001) to date have examined the blocked cyclic paradigm using categorisation, drawing opposing conclusions. Therefore, we designed Experiments 2 and 3 to further investigate context effects within this paradigm. Experiment 2 used the standard block cyclic naming task to induce the interference effect using novel pictorial stimuli. Experiment 3 added a semantic classification of old vs. young to the same method as in Experiment 2. Consistent with Damian et al. (2001), our Experiment 3 results revealed that participants did not differ significantly in naming speed between blocks, suggesting a lexical (or later) origin and locus. The overall findings of the current study suggest that the mechanisms operating in the two picture naming tasks differ, which has practical implications for speech and language assessments.
Keyword effects of category level naming
continuous and blocked cyclic
naming paradigms

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Created: Fri, 04 Jul 2014, 14:10:26 EST by Danico Jones on behalf of School of Psychology