Evidence Accumulation in Decision Making 1 Running

Running Head: Evidence Accumulation in Decision Making

A Model for Evidence Accumulation 1 Running head: A Model for Evidence Accumulation A Model for Evidence Accumulation in the Lexical Decision Task

We present a new model for lexical decision, REM-LD, that is based on REM theory (e.g., Shiffrin & Steyvers, 1997). REM-LD uses a principled (i.e., Bayes’ rule) decision process that simultaneously considers the diagnosticity of the evidence for the ‘WORD’ response and the ‘NONWORD’ response. The model calculates the odds ratio that the presented stimulus is a word or a nonword by accumulating ...

Decisions of Value: Going Backstage; Comment on “Contextual Factors Influencing Cost and Quality Decisions in Health and Care: A Structured Evidence Review and Narrative Synthesis”

This commentary expands on two of the key themes briefly raised in the paper involving analysis of the evidence about key contextual influences on decisions of value. The first theme focuses on the need to explore in more detail what is called backstage decision-making looking at how actual decisions are made drawing on evidence from ethnographies about decision-making. These studies point to l...

The Feasibility of Evidence- based Decision Making in a Toxicology Emergency Case

Evidence- Based Medicine (EBM) aims to bring the best available evidence into clinical practice.  Different clinical methods of education such as in-patient rounds, follow up rounds, out-patients rounds, group sessions, grand rounds, lectures, and journal clubs could be held by EBM approach. The current text presents two interrelated case reports; a case report of EBM decision making in an emer...

Evidence Accumulator or Decision Threshold – Which Cortical Mechanism are We Observing?

Most psychological models of perceptual decision making are of the accumulation-to-threshold variety. The neural basis of accumulation in parietal and prefrontal cortex is therefore a topic of great interest in neuroscience. In contrast, threshold mechanisms have received less attention, and their neural basis has usually been sought in subcortical structures. Here I analyze a model of a decisi...