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The Psychometrics Centre

Computational Behavioral Science Unit, Cambridge Judge Business School

Studying at Cambridge


IRT and CAT using Concerto (3 days)

When Jul 06, 2016 10:00 AM to
Jul 08, 2016 05:00 PM
Where Cambridge, UK
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Item Response Theory and Computer Adaptive Testing

A three-day course introducing you to Item Response Theory (IRT) and Computer Adaptive Testing (CAT) using the R open-source statistical computing software and Concerto, the open-source online adaptive test development platform. Get first-hand experience of applying IRT analysis to questionnaire data and create item banks suitable for computer adaptive testing. 

  • Introduction to R and RStudio
  • Basic concepts of Item Response Theory (IRT)
  • Generation of calibrated item-banks using R packages
  • Simulating CATs to assess item bank performance
  • Scoring CATs using R
  • Administering CATs using Concerto  
Event LocationDates and TimesCost per candidate

Kenneth Craik Room
Craik-Marshall Building,
Downing Site 
Cambridge CB2 3EB


6-8 July 2016
3 day course
10.30 - 17.30.
Thursday & Friday:
09.30 - 17.30

Business: £800 (plus 20% VAT)
Academics: £600 (plus 20% VAT)
Students:£500 (plus 20% VAT) 

Contact us for
payment details

Prior experience with R is not necessary. Participants should bring their own laptops with the following programs installed:
R version 3.1.3 (
RStudio ( )
FireStar ( )


Day 1 – Introduction to R and Rstudio

10.30 – 11.30 R and Rstudio installation, Introduction to R

11.30 - 13.00 Data analysis and R basics, Practical (Part 1)

13.00 - 02.00 Lunch

14.00 - 15.30 Practical (Part 2)

16.00 - 17.30 Practical examples and exercises, Questions

Day 2 – Item Response Theory (IRT)

09.30 - 11.00 IRT (Theory), Application of IRT models (Practical)

11.15 - 12.45 Different IRT response scales (dichotomous and polytomous)  (Theory), Analysing polytomous scales using the Rasch model (Practical)

12.45 - 02.00 Lunch

14.00 - 15.30 IRT modelling  of the CESD depression scale (Theory & Practical)

16.00 - 17.30 IRT diagnostics of the CESD depression scale (Theory & Practical), Practical examples and exercises, Revisions and Questions

Day 3 – Computer Adaptive Testing (CAT) with Concerto

09.30 - 11.00 Computer Adaptive Testing (CAT Theory and Practical)

11.15 - 12.45 Firestar simulation of item bank performance (Practical), Programming a polytomous adaptive test using the catR package (Practical)

12.45 - 02.00 Lunch

14.00 - 15.30 Introduction to adaptive testing in Concerto (Theory and Practical)

16.00 - 17.30 Final Revision & Exercise, Certificates and Q&A

Some of our previous workshops have been held at:

We are happy to deliver this course on your premises. The cost of the course is negotiable and we are happy to provide it on a non-profit basis, although a charitable donation towards the development of Concerto would be very much appreciated. Contact The Psychometrics Centre for more information.

Book early to avoid disappointment

Check out what our delegates say about our courses

Note: Earlier courses were held in Kuala Lumpur, Warsaw, Vienna, Sofia, Beijing, Brazil, Cambridge and Istanbul.