Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers challenge popular decision-making theory

07.10.2004


Researchers in the Department of Psychology at Carnegie Mellon University have completed a study challenging a popular theory that claims bodily states can guide decision-making when conscious knowledge isn’t available. The paper, written by doctoral student Tiago V. Maia and James L. McClelland, the Walter Van Dyke Bingham Professor of Psychology and Cognitive Neuroscience, will be published online next week in the Proceedings of the National Academy of Sciences.

The study examines the somatic marker hypothesis, which states that when an individual faces a decision, each alternative elicits a bodily state – a somatic marker – that corresponds to an emotional reaction. According to the hypothesis, these markers influence decision-making and can guide the individual to make an advantageous choice even in the absence of conscious knowledge to guide the decision. The somatic marker hypothesis was proposed by neurologist Antonio Damasio in his best-selling book, "Descartes’ Error: Emotion, Reason, and the Human Brain."

Maia and McClelland found that in testing the hypothesis using a simple card game, Damasio and his colleagues used a test of conscious knowledge that was not sensitive enough to detect everything the participants knew about the game; thus, individuals may have been guided by their knowledge, rather than their bodily states. Maia and McClelland also reviewed other evidence used to support the somatic marker hypothesis, and found that, in all cases, recent results suggest alternative interpretations for that evidence.


"It is important to note that our results and review of related work do not prove that the somatic marker hypothesis is wrong; however, they do undermine virtually all sources of support for it. If the somatic marker hypothesis is to remain viable, new evidence to support it will be required," Maia and McClelland said.

McClelland is the co-director of the Center for the Neural Basis of Cognition, which is run jointly by Carnegie Mellon and the University of Pittsburgh. The Department of Psychology is one of eight departments in the College of Humanities and Social Sciences, the second-largest academic unit at Carnegie Mellon. The college emphasizes interdisciplinary study in a technologically rich environment, with an open and forward-thinking stance toward the arts and sciences.

Jonathan Potts | EurekAlert!
Further information:
http://www.cmu.edu

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>