Using Time-Varying Evidence to Test Models of Decision Dynamics: Bounded Diffusion vs. the Leaky Competing Accumulator Model.

Journal article

When people make decisions, do they give equal weight to evidence arriving at different times? A recent study (Kiani et al., 2008) using brief motion pulses (superimposed on a random moving dot display) reported a primacy effect: pulses presented early in a motion observation period had a stronger impact than pulses presented later. This observation was interpreted as supporting the bounded diffusion (BD) model and ruling out models in which evidence accumulation is subject to leakage or deca...

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Authors: Tsetsos, K; Gao, J; McClelland, J; Usher, M

• Journal: Frontiers in neuroscience
• Volume: 6
• Pages: 79
• Publication date: 2012-01-01
• DOI: 10.3389/fnins.2012.00079
• EISSN: 1662-453X
• ISSN: 1662-4548
• Language: English
• Keywords: LCA; order effects; non-stationary evidence; bounded diffusion; perceptual choice