Open-source Online R-based Adaptive Testing Platform

Concerto is an open-source testing platform that allows users to create various on-line assessment tools, from simple surveys to complex IRT-based Adaptive Tests. Being open-source, Concerto is free for academic and commercial use!

Few demos:

• Raven-Style Adaptive test (no feedback)
• Basic adaptive demo test.
• Music Taste Questionnaire by Arielle Bonneville-Roussy
• 100-item Personality Test by Koen de Couck

Where to start

• Before installing Concerto on your own server try it out for free on our server
• Go through tutorials - it would not take too long and will be loads of fun

Five reasons to use Concerto:

• Open source - As well as Concerto being free to use, you can host your test on our server, free of charge. Composed of open-source components, Concerto is constantly being updated and improved by a community of users.
• Computerised Adaptive Testing - You can use the powerful R engine to apply virtually any Item Response Theory and Computerised Adaptive Testing model.
• Feedback - Provide your test-takers with an instant response.
• Flexibility - Create an unlimited number of tests; with an unlimited number of questions.
• Concerto events - We hold Concerto training sessions and workshops throughout the world. Visit the Training and Workshops page for more information.

Contribute to the Concerto project!

We are only a small team of core members, and consequently are always happy to have help from the larger Concerto community. You can contribute to the project in various ways, including:

• Translations - Translate the Concerto dictionary file so that the platform can be available in a new language. Concerto is currently available in English, Polish, Chinese (simplified), German, French and Bulgarian.
• Tutorials - Develop a written, audio or video tutorial on developing a test in Concerto, adding special features to your test, or something new that relates to Concerto. Take a look at the available tutorials to get an idea or come up with your own innovative ideas.
• Funding - If you do not want to directly work on the project, your monetary contributions can help us hire others with the necessary skills and time. Get in touch with any other ideas you have.
• Software development - There are various ways you can help, if you have programming skills. Opt for one of the suggestions below or get in touch with us to discuss more options.
• Platform development - Help develop the next version of the platform, plug-ins etc. This requires intermediate-advanced knowledge of computer programming.
• Debugging and benchmarking - Even if you have beginner-intermediate knowledge of programming you can still help. Help check the work of our programmers, identify errors/bugs and other limitations that can be improved in the developmental version, and make recommendations concerning the layout and wording of our help and example pages..
• Templates and Style Sheets - Develop different kinds of style sheets and/or HTML templates that Concerto users can download from the object library.

Remember, you can work remotely or on-site, and full-time, part-time or in your own time. Students are also welcome to join us for summer internships and work placements. Get in touch with us today!

Please visit our main webpage at The Psychometrics Centre, Cambridge University for more information.