The Behaviorisms of Skinner and Quine: Genesis, Development, and Mutual Influence

in april 1933, two bright young Ph.D.s were elected to the Harvard Society of Fellows: the psychologist B. F. Skinner and the philosopher/logician W. V. Quine. Both men would become among the most influential scholars of their time; Skinner leads the "Top 100 Most Eminent Psychologists of the 20th Century," whereas philosophers have selected Quine as the most important Anglophone philosopher after the Second World War.1 At the height of their fame, Skinner and Quine became "Edgar Pierce twins"; the latter obtaining the endowed chair at Harvard's department of philosophy, the former taking up the position at Harvard's psychology department.2Besides these biographical parallels, there also..

Assessment and development of cognitive skills using tangible electronic board games : serious games on the TUI TagTiles

When designing the educational tools and methods of the future, putting the child and its natural way of developing at the center offers great benefits. The child will be more motivated and at the same time the educational yield will be higher and more targeted. In this dissertation it is shown that electronic tangible systems like the TagTiles console can offer integral, personalized development of children in the areas of cognitive, fine motor and social skills for assessment, education and therapy, in a manner that builds on natural forms of play of children. Tangible User Interfaces (TUIs) are potentially highly effective tools for education combining physical interfaces with computing power, enabling easy-to-use and robust applications that are enjoyable and motivating. The topic of this dissertation is whether and how TUIs can be developed that are effective for developing cognitive skills of children. Classical theories on cognitive development were used as a theoretical foundation for the development of a TUI-based educational application, such as the role of sensorimotor abilities for cognitive development as described by Piaget. Vygotsky’s concept of the Zone of Proximal Development was used to inspire the implementation of adaptivity in the educational application. The research described consisted of three phases, each including an empirical study conducted at primary schools. In the first phase the influence of the type of interface on the performance of children on an educational task was investigated. The use of a virtual, pc-based interface was compared to the use of a tangible, non-electronic interface for the same puzzle task. It was found that children (N=26, aged 5-7 years) were able to solve the tangible puzzle tasks on average almost twice as fast as the PC based task, and needed considerably less instruction for the tangible version. The results of the study support the hypothesis that tangible interfaces offer a more suitable interface than a pc-based interface to educational tasks, at least for young children. In the second phase it was validated whether a range of TUI-based tasks can be used to address nonverbal, cognitive skills. The applied tasks had been developed for use with ‘TagTiles’. TagTiles is a tabletop electronic console with tangible game pieces developed by Serious Toys B.V. (www.serioustoys.com). The console includes a sensing board with an array of LED lights underneath and audio output. The system is controlled by manipulating game pieces on the TagTiles surface. Eight visual-spatial tasks were created, intended to address different nonverbal cognitive skills such as (working) memory and spatial reasoning. Each task included abstract patterns consisting of colored tiles. For each task a different assignment is given to the player, such as mirroring the pattern, or repeating a sequence of tiles that lit up on the board. To validate which skills can be addressed with these tasks, children’s performances on the TagTiles tasks were correlated with performances on several conventional psychometric instruments. This study included children aged 8-10 years and consisted of a pilot study (N=10) and an experiment (N=32). Significant correlations were found between the performances of children on the TagTiles tasks and the performances on nonverbal subtests of the Wechsler Intelligence Scale for Children IIINL (WISC IIINL). Some tasks also showed significant correlations with Raven’s Progressive Matrices, which is an intelligence test measuring deductive reasoning skills. The results of this study indicate that the developed tasks can be used to train skills that are measured in IQ tests. In the third phase it was investigated whether the developed visual-spatial tasks kept their ability to address cognitive skills when embedded in a game. It was also tested whether children experienced this game, called ‘Tap the little hedgehog’, to be fun and intrinsically motivating. A fantasy theme was added to include the tasks in a natural way, to minimize and simplify the instructions needed to understand the game play and to make the tasks more fun to play. The difficulty of the task levels was made adaptive to the player’s achievements. A reward structure was added to increase children’s motivation to reach certain goals in the game as well as a support structure, created to help the child when needed, enabling independent play. The results of the empirical study (N=52, aged 7-9 years) with this game indicated that the added game context had not changed the essence of the tasks, as the performances were similar to those in the study in phase two. These findings support the hypothesis that TagTiles tasks applied in a game context can be used to assess and train a range of nonverbal skills. For assessment purposes we concluded that TagTiles can be used to test at least part of the cognitive skills that are addressed with the applied conventional psychological measures, given the significant correlations that were found. Studies by others have shown that training of relevant skills such as working memory can improve aspects of intellectual functioning, in particular executive functioning and efficient use of working memory. This opens the exciting prospect that by practicing with TagTiles the performance on the mentioned skills may be enhanced, or that these skills may be more effectively used. This means that it would be useful to investigate whether, after further refinement and validation, the TagTiles tasks can be used for assessment and training of specific cognitive skills. Based on the results of the conducted studies, it was concluded that the integral and personalized development of children in the areas of cognitive, fine motor and social skills for assessment, education and therapy can be facilitated with TUIs like TagTiles. Educational TUIs can profoundly change current education and assessment practices, offering an alternative that is enjoyable to the child and effective and accurate to the educational or assessment expert. The described way of creating a challenge using the Zone of Proximal Development can also be used to improve the experience with educational games

Justified True Belief:The Remarkable History of Mainstream Epistemology

This paper reconstructs the origins of Gettier-style epistemology, highlighting the philosophical and methodological debates that led to its development in the 1960s. Though present-day epistemologists assume that the search for necessary and sufficient conditions for knowledge began with Gettier’s 1963 argument against the JTB-definition, I show that thisresearch program can be traced back to British discussions about knowledge and analysis in the 1940s and 1950s. I discuss work of, among others, Bertrand Russell, G. E. Moore, A. J. Ayer, Norman Malcom, and A. D. Woozley, showing how exchanges between different schools of analytic philosophy gave rise to new ideas about the nature of knowledge and analysis. Finally, I turn to Gettier's intellectual development and argue that his paper was influenced by some of these debates, suggesting that even his interpretation of Plato’sdefinition of knowledge can be traced back to discussions in this period

The American Reception of Logical Positivism: First Encounters (1929-1932)

This paper reconstructs the American reception of logical positivism in the early 1930s. I argue that Moritz Schlick (who had visiting positions at Stanford and Berkeley between 1929 and 1932) and Herbert Feigl (who visited Harvard in the 1930-31 academic year) played a crucial role in promoting the *Wissenschaftliche Weltauffassung*, years before members of the Vienna Circle, the Berlin Group, and the Lvov-Warsaw school would seek refuge in the United States. Building on archive material from the Wiener Kreis Archiv, the Harvard University Archives, and the Herbert Feigl Papers, as well as a large number of publications in American philosophy journals from the early 1930s, I reconstruct the subtle transformation of the American philosophical landscape in the years immediately preceding the European exodus. I argue that (1) American philosophical discussions about meaning and significance and (2) internal dynamics in the Vienna Circle between 1929 and 1931 significantly impacted the way in which US philosophers came to perceive logical positivism