The Team CRAC
Invited Conférences

Close General information

Close Conferences 2004

Close Conferences 2005

Close Conferences 2006

Close Conferences 2007

Close Conferences 2008

Close Conferences 2009

Close Conférences 2009

Close Conférences 2010

Close Conferences 2011

Close Conférences 2012

Close Conférences 2013

Close symposia



   visitors online

Conferences 2007 - F. Jamet

Mechanisms of undecidable temporal Reasoning

Speaker: Franck Jamet

Date: 9 November 2006

 The research presented here studies the inferential mechanisms of qualitative reasoning in adults applied to undecidable hypothetical statements about cinematic time.
Qualitative reasoning is different from quantitative reasoning in that it does not rely on numeric data. Inferences such as "more than..."  "less than..." or "the same..." are used. Cinematic times utilizes three concepts: time, speed, and space.

Qualitative cinematic judgements can consist of "more time," "the same time," "less time," "faster," "the same speed," "slower," "more space," "the same amout of space," "less space."  Hypothetical statements consist of giving two pieces of qualitative information out of three, for example, information on length of time, and space, and ask for a judgement on missing information (speed, in this case). Hypothetical undecidables are different from decidable statements because the three responses remain possible.

Two hundred adult subjects (one hundren "novices" and one hundred "experts" with 5 - 7 years of post physical mathematics) listened to two undecidable hypothetical statements on four types of information: relative to  the speed of two vehicles (the red car is going faster than the black car), in the order of departure (the red car leaves before the black car), in the order of arrival (the red car arrives before the black car), and one specifying that the two vehicles leave from the same spot. The subject is asked to respond on the length of the race and the distance covered.

Results show that: 1) The role of cinematic information does not modify the quality of temporal inferences. 2) Undecidable problems pose many difficulties even for "experts." 3) Two inferential mechanisms explain the majority of the experts' responses but only 5 for the novices.

These results illustrate the words of Piaget (1969): "Time poses terrifying problems to genetic epistemology."

Click here to see the video 

(If you have trouble viewing the video, see technical advice)

Creation date : 16/10/2006 @ 14:41
Last update : 30/09/2007 @ 02:36
Category : Conferences 2007
Page read 7047 times

Print the article Print the article

News Letter
To receive news about this website, consider subscribing to our Newsletter.
344 Subscribers

Webmaster - Infos
News RSS
^ Top ^