Concatenate: collaps data from different presentation lists of the same experiment into a single data set.
A. Download, install, & test dmdx 1. If your computer does not have Directx 5.0 or later, download Directx 7.0 into the folder Program files\dierectx\setup\; double click on it; it will install itself.
4. Test and learn what dmdx can do by running file "features.rtf" in the demos folder.
1. Use Wordpad for writing item files and save them in rich text format (.rtf).
2. If you use two or more counterbalanced lists, name them as ch1a, ch1b, etc.
Use file transparent file names so that you remember which file is for what purpose. My .rtf file names begin with my initial jn, then two letters for the project, then experiment #, then presentation list if counterbalanced. For example, jnmf1a, jnmf1b, jnmf2a, jnmf2b.
3. If you are testing both native speakers and nonnative speakers, they should have separate item files. If there are more than one group of non-native speakers, e.g., Spanish ESL students and Chinese ESL students, you also need to have separate item files for them. This way, the data from each group will be saved in separate data (.azk) files. You can always combine them into a single data set at a later stage. You don't want to have data from different groups in the same .azk file and then have to separate them manually or even worse forget which data is from whom.
e. or give them credit in the GSU experiment scheduling system.
3. Collapes data from different presentation lists of the same experiment.