Cross-sectional surveys conducted during the 2012 U.S. presidential campaign showed large swings in support for the Democratic and Republican candidates, especially before and after the first presidential debate. Using a unique (in terms of scale, frequency, and source) panel survey, we find that daily sample composition varied more in response to campaign events than did vote intentions. Multi...

We present results from our work on the coevolution of artificial creatures similar to those introduced by Sims [7]. In the present article we are mostly concerned with coevolutionary analysis. Coevolution is prone to complex dynamics which are often difficult to analyse. We introduce an improved analysis method based on Master Tournament matrices [5], which we argue is both less costly to comp...

Since ancient times, man has been concerned to create an artificial structure similar to itself. This concern has remained constant attention and creative thinkers most profound since antiquity until today, it is of greatest interest. This article aims to highlight the most significant moments of the evolution from mechanical creatures mythical or real, from antiquity to the present humanoid ro...

This paper describes a new layered brain architecture for simulated autonomous and semi-autonomous creatures that inhabit graphical worlds. The main feature of the brain is its division into distinct systems, which communicate through common access to an internal mental blackboard. The brain was designed to encourage experimentation with various systems and architectures. It has so far proven f...

Communication processes rely on the production and interpretation of representations, thus an important issue is to understand what types of representations are involved during the emergence of interpretations. Here we present an experiment to evaluate conditions for the emergence of interpretations of different representation types. To design our experiment, we follow biological inspirations a...

We demonstrate artificial evolution in a system that combines physical simulation with competition between creatures. The simulated creatures are constructed using point masses that are connected by oscillating springs. The creatures pull themselves across their 2D environment by varying the amount of friction at different point masses, giving them sticky feet. Creatures combat one another, and...

O cunning guide, son of Maia, I fear that you might steal my lyre and my curved bow. For you hold the office from Zeus to establish deeds of exchange among men throughout the fertile earth. But if you would suffer to swear the great oath of the gods for me, either by nodding your head or by the mighty water of the Styx, you would accomplish everything pleasing to my own heart. —Homeric Hymnes 1...