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2 results on '"Ami Eidels"'

1. Converging measures of workload capacity.

Author

Ami Eidels

Subjects
*EMPLOYEES' workload, *NONPARAMETRIC statistics, *PARAMETER estimation, *PARADIGM (Theory of knowledge), *STIMULUS generalization, *FACTOR structure
Abstract

Does processing more than one stimulus concurrently impede or facilitate performance relative to processing just one stimulus? This fundamental question about workload capacity was surprisingly difficult to address empirically until Townsend and Nozawa (1995) developed a set of nonparametric analyses called systems factorial technology. We develop an alternative parametric approach based on the linear ballistic accumulator decision model (Brown & Heathcote, 2008), which uses the model's parameter estimates to measure processing capacity. We show that these two methods have complementary strengths, and that, in a data set where participants varied greatly in capacity, the two approaches provide converging evidence. [ABSTRACT FROM AUTHOR]

Published
2010
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2. Studying visual search using systems factorial methodology with target–distractor similarity as the factor.

Author

Mario Fifić, James T. Townsend, and Ami Eidels

Subjects
VISUAL education, ELECTRONIC systems, RESEMBLANCE (Philosophy), METHODOLOGY
Abstract

Systems factorial technology (SFT) is a theory-driven set of methodologies oriented toward identification of basic mechanisms, such as parallel versus serial processing, of perception and cognition. Studies employing SFT in visual search with small display sizes have repeatedly shown decisive evidence for parallel processing. The first strong evidence for serial processing was recently found in short-term memory search, using target–distractor (T–D) similarity as a key experimental variable (Townsend & Fifić, 2004). One of the major goals of the present study was to employ T–D similarity in visual search to learn whether this mode of manipulating processing speed would affect the parallel versus serial issue in that domain. The result was a surprising and regular departure from ordinary parallel or serial processing. The most plausible account at present relies on the notion of positively interacting parallel channels. [ABSTRACT FROM AUTHOR]

Published
2008
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