Not all pieces of information mentioned during an interaction are equally accessible in speakers' conversational memory. The current study sought to test whether 2 basic features of dialogue management (reference acceptance and reuse) affect reference recognition. Dyads of speakers were asked to discuss a route for an imaginary person, thus…

This article is about experimentation in both practical and mental activity and uses data from a series of studies with preschool children. The article focuses on personal experimentation, which is aimed at discovering relations, rather than the more utilitarian experimentation that is aimed at solving practical tasks. Personal experimentation…

This article is a methodological contribution to the use of design experiments in educational research. We will discuss the implications of a historical and situated interpretation to design experiments, the consequences this has for the analysis of the collected data and empirically based suggestions to improve the designs of the computer-based…

The design of five experiments comparing usability evaluation methods (UEMs) is examined. Each has had an important influence on human-computer interaction (HCI); however, problems with experimental design raised questions as to the efficacy of various UEMs. To obtain desired outcomes of the experimental method addressing HCI issues, close…