London Judgement & Decision Making Group Summer term 2013 – 2014 Organizers Neil Bramley University College London Contact details: Department of Cognitive, Perceptual & Brain Sciences Room 201, 26 Bedford Way, London, WC1H 0AP UK E-mail: neil.bramley.10@ucl.ac.uk Emmanouil Konstantinidis University College London Contact details: Department of Cognitive, Perceptual & Brain Sciences Room 204c, 26 Bedford Way, London, WC1H 0AP UK Telephone: (+44) 020 7679 5364 E-mail: emmanouil.konstantinidis.09@ucl.ac.uk Leo Cohen University College London Contact details: Department of Cognitive, Perceptual & Brain Sciences Room 204c, 26 Bedford Way, London, WC1H 0AP UK E-mail: l.cohen.12@ucl.ac.uk LJDM website http://www.ljdm.info Web administrator: Dr Stian Reimers (Stian.Reimers.1@city.ac.uk) LJDM members’ (Risk & Decision) list Contact: Dr Marianne Promberger (marianne.promberger@kcl.ac.uk) Seminar Schedule April – June 2014 5:00 pm in Room 313, 26 Bedford Way, UCL Psychology 30th April Children’s understanding of intensive properties of matter. Is this really so difficult? Anne Schlottmann University College London 7th May Judgement and decision making in chess Fernand Gobet University of Liverpool 14th May TBA TBA TBA 21st May Neural Implementation and Dynamics of Competitive Value Comparison Laurence Hunt University College London 28th May TBA Dries Trippas Plymouth University 4th June TBA Peter Lane University of Hertfordshire Abstracts 30.04.2014 Anne Schlottmann University College London Children’s understanding of intensive properties of matter. Is this really so difficult? Many properties of substances/materials are intensive, and children are widely believed to have difficulties with reasoning about intensive quantities. Here we focused on children’s understanding of taste/visual intensity of mixed substances (mixtures of sugar/colouring/sand with water). We used an Information Integration approach in the belief that, as in studies in other domains (e.g., probability) this would allow children to display early intuitions missed by choice methods. We also thought children would have better intuitions when intensity is visible. We found improved performance with IIT, but improvement was nowhere near as dramatic as in other domains; visual intensity indicators did not affect performance at all. These results would seem to confirm that understanding of intensive properties is intrinsically difficult for children. Subsequently, however, Hong Kong children tested in the same way performed substantially better than UK children, as often found for math/science. Thus UK children's difficulties do not reflect a cognitive-developmental limitation, but depend on cultural experience. Current studies investigate factors involved in this and how we may improve children's understanding of intensity, including an investigation of how this relates to probability judgment. 07.05.2014 Fernand Gobet University of Leeds Judgement and decision making in chess Problem solving and decision making have evolved in two different and independent fields of psychological research, although they both study thinking. This divide, which is the outcome of historical vagaries, seems artificial, as both fields study the way people make decisions. However, the two fields also differ in interesting ways. Studies in the field of problem solving typically ask participants to solve problems without providing them with possible answers, are interested in the cognitive processes involved and mostly use computer modelling as formal theoretical tool. By contrast, studies in the field of decision making typically provide both the problems and possible answers, are interested in whether participants are rational (i.e. choose the correct answers) and not so much in the detail of the cognitive processes involved, and tend to use mathematical modelling. In this talk, I will illustrate these differences with the game of chess, one of the domains that have been studied most extensively in the research on expertise. I will also present a theory that can explain data representative of both traditions, as a theory of chess thinking should. 14.05.2014 NO SEMINAR - TBA 21.05.2014 Laurence Hunt University College London Neural Implementation and Dynamics of Competitive Value Comparison 28.05.2014 Dries Trippas Plymouth University TBA 04.06.2014 Peter Lane University of Hertfordshire TBA