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Rationality. Fred Wenstøp. Emotion and decision making. Phineas Gage. Case: Phineas Gage Experiment 1: A group of people, some normal and some suffering from prefrontal deficiency was Exposed to a fire alarm Shown value laden pictures Experiment 2: Choice of card decks.
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Rationality Fred Wenstøp Fred Wenstøp
Emotion and decision making Phineas Gage • Case: Phineas Gage • Experiment 1: • A group of people, some normal and some suffering from prefrontal deficiency was • Exposed to a fire alarm • Shown value laden pictures • Experiment 2: • Choice of card decks Antonio Damasio Fred Wenstøp
Damasio’s theory Neocortex Prefrontal lobes Amygdala Stimulus Feelings Emotional response from the body Primary emotions trigger Secondary emotions trigger Fred Wenstøp
RationalityFøllesdal 1992 • Four dimensions of rationality • rationality as logical consistency • pertains both to values and beliefs • rationality as well-foundedness of beliefs • beliefs are well supported by available evidence • rationality of action • application of decision theory • rationality as well-foundedness of values • reflective equilibrium that gives a stable set of convictions that are relevant for the decision situation Fred Wenstøp
Consistency of beliefs I • Wason 1966 • Cards: A D 3 7 • Each card has a number on one side and a letter on the other • Rule: If there is an A on one side, there is a 3 on the other • Which cards would you turn to check whether the rule has been applied properly? Fred Wenstøp
Tversky & Kahneman 1983 Linda is 31 years old, single, out- spoken, and very bright. She majored in philosophy. As a student, she was deeply concerned with issues of discrimination and social justice, and also participated in antinuclear demonstrations. Please, rank the following statements by their probability. A. Linda is a teacher in an elementary school B. Linda works in a bookstore and takes Yoga classes C. Linda is active in the feminist movement D. Lina is a psychiatric social worker E. Linda is a member of the league of Women Voters F. Linda is a bank teller G. Linda is an insurance salesperson H. Linda is a bank teller and is active in the feminst movement Consistency of beliefs II Fred Wenstøp