posted on 2006-01-01, 00:00authored byVincent Aleven, Jonathan Sewall, Bruce M McLaren, Kenneth Koedinger
Authoring tools for Intelligent Tutoring Systems are
especially valuable if they not only provide a rich set of
options for the efficient authoring of tutoring systems
but also support controlled experiments in which the
added educational value of new tutor features is
evaluated. The Cognitive Tutor Authoring Tools
(CTAT) provide both. Using CTAT, real-world
”Example-Tracing Tutors” can be created without
programming. CTAT also provides various kinds of
support for controlled experiments, such as
administration of different experimental treatments,
logging, and data analysis. We present two case
studies in which Example-Tracing Tutors created with
CTAT were used in classroom experiments. The case
studies illustrate a number of new features in CTAT:
Use of Macromedia Flash MX 2004 for creating tutor
interfaces, extensions to the Example-Tracing Engine
that allow for more flexible tutors, a Mass Production
facility for more efficient template-based authoring,
and support for controlled experiments.