Théorie des jeux expérimentale & action motrice

How do sportspeople succeed in a non-collaborative game? An illustration of a perverse side effect of altruism Are team sports specialists predisposed to collaboration? The scientific literature on this topic is divided. The present article attempts to end this debate by applying experimental game theory. We constituted three groups of volunteers (all students aged around 20): 25 team sports specialists; 23 individual sports specialists (gymnasts, track & field athletes and swimmers) and a control group of 24 non-sportspeople. Each subgroup was divided into 3 teams that played against each other in turn (and not against teams from other subgroups). The teams played a game based on the well-known Prisoner's Dilemma (Tucker, 1950) - the paradoxical "Bluegill Sunbass Game" (Binmore, 1999) with three Nash equilibria (two suboptimal equilibria with a pure strategy and an optimal equilibrium with a mixed, egotistical strategy (p= 1/2)). This game also features a Harsanyi equilibrium (based on constant compliance with a moral code and altruism by empathy: "do not unto others that which you would not have them do unto you"). How, then, was the game played? Two teams of 8 competed on a handball court. Each team wore a distinctive jersey. The game lasted 15 minutes and the players were allowed to touch the handball ball with their feet or hands. After each goal, each team had to return to its own half of the court. Players were allowed to score in either goal and thus cooperate with their teammates or not, as they saw fit. A goal against the nominally opposing team (a "guardian" strategy, by analogy with the Bluegill Sunbass Game) earned a point for everyone in the team. For an own goal (a "sneaker" strategy), only the scorer earned a point - hence the paradox. If all the members of a team work together to score a goal, everyone is happy (the Harsanyi solution). However, the situation was not balanced in the Nashian sense: each player had a reason to be disloyal to his/her team at the merest opportunity. But if everyone adopts a "sneaker" strategy, the game becomes a free-for-all and the chances of scoring become much slimmer. In a context in which doubt reigns as to the honesty of team members and "legal betrayals", what type of sportsperson will score the most goals? By analogy with the Bluegill Sunbass Game, we recorded direct motor interactions (passes and shots) based on either a "guardian" tactic (i.e. collaboration within the team) or a "sneaker" tactic (shots and passes against the player's designated team). So, was the group of team sports specialist more collaborative than the other two groups? The answer was no. A statistical analysis (difference from chance in a logistic regression) enabled us to draw three conclusions: ?For the team sports specialists, the Nash equilibrium (1950) was stronger than the Harsanyi equilibrium (1977). ?The sporting principles of equilibrium and exclusivity are not appropriate in the Bluegill Sunbass Game and are quickly abandoned by the team sports specialists. The latter are opportunists who focus solely on winning and do well out of it. ?The most altruistic players are the main losers in the Bluegill Sunbass Game: they keep the game alive but contribute to their own defeat. In our experiment, the most altruistic players tended to be the females and the individual sports specialists

La fundamentación discursiva de la ética : Examen crítico de la reflexión trascendental y defensa del programa ético-discursivo en la versión de Karl-Otto Apel

El tema de la tesis es la fundamentación ético discursiva propuesta por Karl-Otto Apel en el marco de su pragmática trascendental. El examen crítico de esta propuesta filosófica tiene el objetivo de reforzar los argumentos a favor de una fundamentación trascendental de la ética. Se enfrenta inicialmente a la pragmática apeliana con una serie de críticas provenientes del debate analítico sobre los "argumentos trascendentales", iniciada en los años sesenta del siglo XX. Se reconstruyen tres líneas principales: una que atañe a la forma de los argumentos trascendentales, otra a su capacidad para demostrar validez objetiva, y la otra a su capacidad para demostrar la unicidad de un esquema conceptual (iniciadas respectivamente por M. Gram, B. Stroud y S. Körner). La discusión y posterior aplicación a Apel de las críticas de este debate conduce a tres conclusiones principales. La primera es que no existen razones concluyentes en contra de realizar una reflexión trascendental sobre las condiciones de posibilidad del conocimiento válido. La segunda es que la fundamentación trascendental debe hacerse en el marco de un modelo filosófico dialógico y auto-reflexivo (diferente al asumido por los autores del debate). Precisamente, la tercera conclusión es que todo método trascendental debe ser "interno", es decir, debe asumir las condiciones que investiga. Se aborda entonces el problema de concebir un método que asuma la circularidad de la investigación y le dé un contenido concreto a la fundamentación. En lugar de la fórmula apeliana, se sostiene la conveniencia de entender la pragmática trascendental como una continuación, corregida en un sentido trascendental, de la hermenéutica iniciada por Heidegger y renovada por Gadamer. Un método interno "hermenéutico trascendental" puede describirse con los rasgos de la dialogicidad, la auto-reflexión y la crítica del sentido. El interés fundamental es, como para Apel, la reconstrucción de aquellos presupuestos que conforman la base de la ética discursiva, la cual transforma de manera comunicativa el imperativo categórico kantiano. Se discute finalmente la cuestión de cómo es posible pensar que los presupuestos argumentativos no están sometidos a cambios históricos. La respuesta apunta a señalar que la objeción de "otra razón posible" carece de argumentos sustantivos en contra de la fundamentación.

Tal es la su auze : El héroe afortunado del Cantar de Mio Cid

El protagonista del Cantar de mio Cid es un héore mesurado, pero también afortunado, agraciado con auze o buenaventura y "en buen hora nado". Su fortuna es innata, pero también cultivada a través de la prudencia. La suma de templanza y osadía sirva para mantener el auze del Campeador, lo que, unido al optimismo del héroe afortunado, impregna el poema épico de un fuerte dinamismo.

La fundamentación discursiva de la ética : Examen crítico de la reflexión trascendental y defensa del programa ético-discursivo en la versión de Karl-Otto Apel

El tema de la tesis es la fundamentación ético discursiva propuesta por Karl-Otto Apel en el marco de su pragmática trascendental. El examen crítico de esta propuesta filosófica tiene el objetivo de reforzar los argumentos a favor de una fundamentación trascendental de la ética. Se enfrenta inicialmente a la pragmática apeliana con una serie de críticas provenientes del debate analítico sobre los "argumentos trascendentales", iniciada en los años sesenta del siglo XX. Se reconstruyen tres líneas principales: una que atañe a la forma de los argumentos trascendentales, otra a su capacidad para demostrar validez objetiva, y la otra a su capacidad para demostrar la unicidad de un esquema conceptual (iniciadas respectivamente por M. Gram, B. Stroud y S. Körner). La discusión y posterior aplicación a Apel de las críticas de este debate conduce a tres conclusiones principales. La primera es que no existen razones concluyentes en contra de realizar una reflexión trascendental sobre las condiciones de posibilidad del conocimiento válido. La segunda es que la fundamentación trascendental debe hacerse en el marco de un modelo filosófico dialógico y auto-reflexivo (diferente al asumido por los autores del debate). Precisamente, la tercera conclusión es que todo método trascendental debe ser "interno", es decir, debe asumir las condiciones que investiga. Se aborda entonces el problema de concebir un método que asuma la circularidad de la investigación y le dé un contenido concreto a la fundamentación. En lugar de la fórmula apeliana, se sostiene la conveniencia de entender la pragmática trascendental como una continuación, corregida en un sentido trascendental, de la hermenéutica iniciada por Heidegger y renovada por Gadamer. Un método interno "hermenéutico trascendental" puede describirse con los rasgos de la dialogicidad, la auto-reflexión y la crítica del sentido. El interés fundamental es, como para Apel, la reconstrucción de aquellos presupuestos que conforman la base de la ética discursiva, la cual transforma de manera comunicativa el imperativo categórico kantiano. Se discute finalmente la cuestión de cómo es posible pensar que los presupuestos argumentativos no están sometidos a cambios históricos. La respuesta apunta a señalar que la objeción de "otra razón posible" carece de argumentos sustantivos en contra de la fundamentación.

Tal es la su auze : El héroe afortunado del Cantar de Mio Cid

El protagonista del Cantar de mio Cid es un héore mesurado, pero también afortunado, agraciado con auze o buenaventura y "en buen hora nado". Su fortuna es innata, pero también cultivada a través de la prudencia. La suma de templanza y osadía sirva para mantener el auze del Campeador, lo que, unido al optimismo del héroe afortunado, impregna el poema épico de un fuerte dinamismo.

Théorie des jeux expérimentale & action motrice

How do sportspeople succeed in a non-collaborative game? An illustration of a perverse side effect of altruism Are team sports specialists predisposed to collaboration? The scientific literature on this topic is divided. The present article attempts to end this debate by applying experimental game theory. We constituted three groups of volunteers (all students aged around 20): 25 team sports specialists; 23 individual sports specialists (gymnasts, track & field athletes and swimmers) and a control group of 24 non-sportspeople. Each subgroup was divided into 3 teams that played against each other in turn (and not against teams from other subgroups). The teams played a game based on the well-known Prisoner's Dilemma (Tucker, 1950) - the paradoxical "Bluegill Sunbass Game" (Binmore, 1999) with three Nash equilibria (two suboptimal equilibria with a pure strategy and an optimal equilibrium with a mixed, egotistical strategy (p= 1/2)). This game also features a Harsanyi equilibrium (based on constant compliance with a moral code and altruism by empathy: "do not unto others that which you would not have them do unto you"). How, then, was the game played? Two teams of 8 competed on a handball court. Each team wore a distinctive jersey. The game lasted 15 minutes and the players were allowed to touch the handball ball with their feet or hands. After each goal, each team had to return to its own half of the court. Players were allowed to score in either goal and thus cooperate with their teammates or not, as they saw fit. A goal against the nominally opposing team (a "guardian" strategy, by analogy with the Bluegill Sunbass Game) earned a point for everyone in the team. For an own goal (a "sneaker" strategy), only the scorer earned a point - hence the paradox. If all the members of a team work together to score a goal, everyone is happy (the Harsanyi solution). However, the situation was not balanced in the Nashian sense: each player had a reason to be disloyal to his/her team at the merest opportunity. But if everyone adopts a "sneaker" strategy, the game becomes a free-for-all and the chances of scoring become much slimmer. In a context in which doubt reigns as to the honesty of team members and "legal betrayals", what type of sportsperson will score the most goals? By analogy with the Bluegill Sunbass Game, we recorded direct motor interactions (passes and shots) based on either a "guardian" tactic (i.e. collaboration within the team) or a "sneaker" tactic (shots and passes against the player's designated team). So, was the group of team sports specialist more collaborative than the other two groups? The answer was no. A statistical analysis (difference from chance in a logistic regression) enabled us to draw three conclusions: ?For the team sports specialists, the Nash equilibrium (1950) was stronger than the Harsanyi equilibrium (1977). ?The sporting principles of equilibrium and exclusivity are not appropriate in the Bluegill Sunbass Game and are quickly abandoned by the team sports specialists. The latter are opportunists who focus solely on winning and do well out of it. ?The most altruistic players are the main losers in the Bluegill Sunbass Game: they keep the game alive but contribute to their own defeat. In our experiment, the most altruistic players tended to be the females and the individual sports specialists

La fundamentación discursiva de la ética : Examen crítico de la reflexión trascendental y defensa del programa ético-discursivo en la versión de Karl-Otto Apel

El tema de la tesis es la fundamentación ético discursiva propuesta por Karl-Otto Apel en el marco de su pragmática trascendental. El examen crítico de esta propuesta filosófica tiene el objetivo de reforzar los argumentos a favor de una fundamentación trascendental de la ética. Se enfrenta inicialmente a la pragmática apeliana con una serie de críticas provenientes del debate analítico sobre los "argumentos trascendentales", iniciada en los años sesenta del siglo XX. Se reconstruyen tres líneas principales: una que atañe a la forma de los argumentos trascendentales, otra a su capacidad para demostrar validez objetiva, y la otra a su capacidad para demostrar la unicidad de un esquema conceptual (iniciadas respectivamente por M. Gram, B. Stroud y S. Körner). La discusión y posterior aplicación a Apel de las críticas de este debate conduce a tres conclusiones principales. La primera es que no existen razones concluyentes en contra de realizar una reflexión trascendental sobre las condiciones de posibilidad del conocimiento válido. La segunda es que la fundamentación trascendental debe hacerse en el marco de un modelo filosófico dialógico y auto-reflexivo (diferente al asumido por los autores del debate). Precisamente, la tercera conclusión es que todo método trascendental debe ser "interno", es decir, debe asumir las condiciones que investiga. Se aborda entonces el problema de concebir un método que asuma la circularidad de la investigación y le dé un contenido concreto a la fundamentación. En lugar de la fórmula apeliana, se sostiene la conveniencia de entender la pragmática trascendental como una continuación, corregida en un sentido trascendental, de la hermenéutica iniciada por Heidegger y renovada por Gadamer. Un método interno "hermenéutico trascendental" puede describirse con los rasgos de la dialogicidad, la auto-reflexión y la crítica del sentido. El interés fundamental es, como para Apel, la reconstrucción de aquellos presupuestos que conforman la base de la ética discursiva, la cual transforma de manera comunicativa el imperativo categórico kantiano. Se discute finalmente la cuestión de cómo es posible pensar que los presupuestos argumentativos no están sometidos a cambios históricos. La respuesta apunta a señalar que la objeción de "otra razón posible" carece de argumentos sustantivos en contra de la fundamentación.

Tal es la su auze : El héroe afortunado del Cantar de Mio Cid

El protagonista del Cantar de mio Cid es un héore mesurado, pero también afortunado, agraciado con auze o buenaventura y "en buen hora nado". Su fortuna es innata, pero también cultivada a través de la prudencia. La suma de templanza y osadía sirva para mantener el auze del Campeador, lo que, unido al optimismo del héroe afortunado, impregna el poema épico de un fuerte dinamismo.

Théorie des jeux expérimentale & action motrice

How do sportspeople succeed in a non-collaborative game? An illustration of a perverse side effect of altruism Are team sports specialists predisposed to collaboration? The scientific literature on this topic is divided. The present article attempts to end this debate by applying experimental game theory. We constituted three groups of volunteers (all students aged around 20): 25 team sports specialists; 23 individual sports specialists (gymnasts, track & field athletes and swimmers) and a control group of 24 non-sportspeople. Each subgroup was divided into 3 teams that played against each other in turn (and not against teams from other subgroups). The teams played a game based on the well-known Prisoner's Dilemma (Tucker, 1950) - the paradoxical "Bluegill Sunbass Game" (Binmore, 1999) with three Nash equilibria (two suboptimal equilibria with a pure strategy and an optimal equilibrium with a mixed, egotistical strategy (p= 1/2)). This game also features a Harsanyi equilibrium (based on constant compliance with a moral code and altruism by empathy: "do not unto others that which you would not have them do unto you"). How, then, was the game played? Two teams of 8 competed on a handball court. Each team wore a distinctive jersey. The game lasted 15 minutes and the players were allowed to touch the handball ball with their feet or hands. After each goal, each team had to return to its own half of the court. Players were allowed to score in either goal and thus cooperate with their teammates or not, as they saw fit. A goal against the nominally opposing team (a "guardian" strategy, by analogy with the Bluegill Sunbass Game) earned a point for everyone in the team. For an own goal (a "sneaker" strategy), only the scorer earned a point - hence the paradox. If all the members of a team work together to score a goal, everyone is happy (the Harsanyi solution). However, the situation was not balanced in the Nashian sense: each player had a reason to be disloyal to his/her team at the merest opportunity. But if everyone adopts a "sneaker" strategy, the game becomes a free-for-all and the chances of scoring become much slimmer. In a context in which doubt reigns as to the honesty of team members and "legal betrayals", what type of sportsperson will score the most goals? By analogy with the Bluegill Sunbass Game, we recorded direct motor interactions (passes and shots) based on either a "guardian" tactic (i.e. collaboration within the team) or a "sneaker" tactic (shots and passes against the player's designated team). So, was the group of team sports specialist more collaborative than the other two groups? The answer was no. A statistical analysis (difference from chance in a logistic regression) enabled us to draw three conclusions: ?For the team sports specialists, the Nash equilibrium (1950) was stronger than the Harsanyi equilibrium (1977). ?The sporting principles of equilibrium and exclusivity are not appropriate in the Bluegill Sunbass Game and are quickly abandoned by the team sports specialists. The latter are opportunists who focus solely on winning and do well out of it. ?The most altruistic players are the main losers in the Bluegill Sunbass Game: they keep the game alive but contribute to their own defeat. In our experiment, the most altruistic players tended to be the females and the individual sports specialists