Software
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This section deals only with the Rationale software.

Rationale – Software for Critical Thinking
Superseding Reason!Able, Rationale is the first high-quality software for argument mapping. It benefits from all the research and experience of the Reason! Project, and is used by schools and universities around the world to teach critical thinking skills.

Reason!Able Project (1999-2002)
Reason!Able – PC software makes reasoning easy and fun. Reason!Able guides and scaffolds reasoning on any issue. Complex arguments are translated into simple, colorful interactive diagrams. Students using the software make record gains in critical thinking skills.

• For an overview of Reason!Able see The Reason! Project (pdf file).
• The basic vision: The paper in which the software and the underlying teaching method are outlined for the first time can be found as Reason!: Improving Informal Reasoning Skills (PDF) on ResearchGate  .
• The software introduction: Tim van Gelder’s specific paper on the software developed at the time can be downloaded via Argument Mapping with Reason!Able (PDF) on ResearchGate. 
• The cognitive psychology angle: The article in which the data regarding students’ skill progress is extensively analyzed is listed as Cultivating expertise in informal reasoning in his Google Scholar overview.