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 New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)

nachricht Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology

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: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>