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The emergence of shared symbol systems is considered to be a pivotal moment in human evolution and human development. These changes are normally explained by reference to changes in people's internal cognitive processes. We present 2 experiments which provide evidence that changes in the external, collaborative processes that people use to communicate can(More)
iii To Ana iv Acknowledgements There are many people without whose help I could not have completed this dissertation. These few words here reflect but a small part of the gratitude I own all of them. My advisor Larry Moss supported me every step of the way. Since my arrival to Bloomington he shared generously his time, knowledge, insight and passion for new(More)
The main goal of this paper is to present the basis for a heterogeneous Euler/Venn diagram and First Order Logic (FOL) reasoning system. We will begin by defining a homogeneous reasoning system for Euler/Venn diagrams including named constants and show this system to be sound and complete. Then we will propose a heterogeneous rule of inference allowing the(More)
In this paper we will present a graph-transformation based method for the verification of heterogeneous first order logic (FOL) and Euler/Venn proofs. In previous work, it has been shown that a special collection of directed acyclic graphs (DAGs) can be used interchangeably with Euler/Venn diagrams in reasoning processes. Thus, proofs which include(More)
This paper compares two explanations of the process by which human communication systems evolve: iterated learning and social collaboration. It then reports an experiment testing the social collaboration account. Participants engaged in a graphical communication task either as a member of a community, where they interacted with seven different partners(More)
is paper contrasts two inuential theoretical accounts of language change and evolution – Iterated Learning and Social Coordination. e contrast is based on an experiment that compares drawings produced with Garrod et al. 's (2007) 'pictionary' task with those produced in an Iterated Learning version of the same task. e main nding is that Iterated Learning(More)
This paper explores the influence of communicative interaction on the form of graphical representations. A referential communication task is described which involves exclusively graphical dialogue. In this task subjects communicate about pieces of music by drawing. The drawings produced fall into two basic types: Abstract and Figurative. Three hypotheses(More)