The Psychology Experiment Building Language (PEBL)
Logo of the PEBL (Psychology Experiment Building Language) software system.png
Developer(s)The PEBL Project
Initial release2003
Stable release
2.0 / January 2018; 4 years ago (2018-01)[1]
Written inC, C++, and PEBL (using the libSDL)
Operating systemMicrosoft Windows, Mac OS X, Linux, Unix
TypeProgramming language
LicenseGNU General Public License

PEBL (Psychology Experiment Building Language) is an open source software program that allows researchers to design and run psychological experiments. It runs on PCs using Windows, OS X, and Linux, using the cross-platform Simple DirectMedia Library (libSDL). It was first released in 2003.


PEBL is a programming language that allows users to create experiments by editing text files. It is written in C++, with a language parser designed using Flex and Bison. It incorporates functions compiled as C++ code that can be used in PEBL, as well as a large number of functions written in PEBL itself.[2][self-published source?][3] PEBL supports presenting stimuli via text, images, movies, audio files; allows response collection via keypress, mouse, joystick, and specialized hardware devices; and supports a number of networking and communication protocols.[citation needed] The PEBL system and related files have been downloaded more than 100,000 times.[4]

Test battery

As well as allowing researchers to develop their own experiments, PEBL includes a set of more than 50 common psychological testing paradigms as part of its Test Battery. Many of its tests have been used and published in peer-reviewed journals.[3][5][6]

These include implementations of:


  1. ^ "PEBL: The Psychology Experiment Building Language".
  2. ^ Mueller, Shane T. (2012). The PEBL Manual, Version 0.12. Lulu. ISBN 978-0-557-65817-6. OCLC 927122417.
  3. ^ a b Piper, Brian J.; Li, Victoria; Eiwaz, Massarra A.; Kobel, Yuliyana V.; Benice, Ted S.; Chu, Alex M.; Olson, Reid H.J.; Rice, Douglas Z.; Gray, Hilary M.; Mueller, Shane T. (March 2012). "Executive function on the psychology experiment building language tests". Behavior Research Methods. 44 (1): 110–123. doi:10.3758/s13428-011-0096-6. PMC 3705215. PMID 21534005.
  4. ^ "Psychology Experiment Building Language —Download Statistics: All Files". SourceForge. Slashdot Media.
  5. ^ "Publications citing PEBL". PEBL Wiki. SourceForge. 22 July 2013. Archived from the original on 23 March 2014.
  6. ^ Mueller, Shane T. (December 2010). "A partial implementation of the BICA cognitive decathlon using the Psychology Experiment Building Language (PEBL)". International Journal of Machine Consciousness. 2 (2): 273–288. doi:10.1142/S1793843010000497.