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Full-Text Articles in Cognition and Perception
Mental Chronometry Measured By Electromyography In Cognitive Experiments Demanding Movement For Response Elicitation, Mohammad Abdolvahab, Miguel Moreno, Nigel Stepp, Daniela Vaz, Michael Turvey
Mental Chronometry Measured By Electromyography In Cognitive Experiments Demanding Movement For Response Elicitation, Mohammad Abdolvahab, Miguel Moreno, Nigel Stepp, Daniela Vaz, Michael Turvey
Mohammad Abdolvahab
The classical button pressing in reaction time experiments has shown to be limited in revealing underlying mental chronometry of cognitive processes. We inquired if it would be possible to unfold the timing of muscle activations in preparation to execute a movement (the so called anticipatory postural adjustments) in response to a cognitive demand in a couple of experiments. We asked our participants to stand in front of a computer screen and respond by raising their arm to a horizontal position. We recorded electromyographic activity of right and left biceps femoris, erector spinae and deltoid together with kinematic angular movement of …
Modelling Biased Judgement With Weighted Updating, Jesse A. Zinn
Modelling Biased Judgement With Weighted Updating, Jesse A. Zinn
Jesse A Zinn
The weighted updating model is a generalization of Bayesian updating that allows for biased beliefs by weighting the functions that constitute Bayes’ rule with real exponents. This paper shows that weighting a distribution affects the information entropy of the resulting distribution, suggesting that weighted updating can model biases in which individuals mistake the information content of data. The paper augments the base model in two ways, allowing it to account for additional biases. The first expansion involves discrimination between data. The second allows the weights to vary over time. The paper also presents a set of sufficient conditions for the …