This translation is older than the original page and might be outdated. See what has changed.
Translations of this page:
 

Randomization

Note: This page is beeing worked on. Please understand that some links are still not working. We are working on it and hurry that it will be fully available again soon.

There are different types of randomization, the technical implementation of which differs in some cases considerably:

  1. Randomization: Single-factorial design (Contains the introduction - please read first!)
    Participants are assigned to different experimental groups and are presented with a random stimulus (image, video, audio). Conceptually, it is a division into different groups.
  2. Randomization with PHP-Code
    If the display options of the above solution are not sufficient or if questions or texts are to be randomized, the interaction of random generator and PHP code is explained here.
  3. Randomisation: Multi-factorial design
    Participants are divided into different experimental groups and are presented with several random stimuli (questions, pictures, videos, texts ect.).
  4. Randomization within-subject (Measurement repetition)
    Participants are shown several stimuli, and these stimuli can be combined in different ways, always asking the same thing.

Tip: To understand the more complex code examples, read the chapters Introduction to PHP Code and Introduction to Arrays.

Tip: Also check out the https://cast.itunes.uni-muenchen.de/clips/H2qJPn0rX8/vod/online.html on randomization for a better understanding and using a concrete example.

Note: In distinction to randomization there is also Rotation. Here, the order in which the stimuli are presented is randomized.

Special Applications

en/create/randomization.txt · Last modified: 11.02.2021 20:05 by sophia.schauer
 
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
Driven by DokuWiki