We predicted that we would see similar developments in information structure as in more traditional conversational settings, even though there was no formal conversation or explicit linguistic history to develop common ground.
we predicted that the build-up of contextual information would cause the context-independent per-word entropy to rise over time, replicating the effect that has been observed across languages and genres (Genzel and Charniak, 2003;Qian and Jaeger, 2012).