My research is mainly focused on OCB changes based on a scenario. I am assuming that a scenario about the future organizational changes given to participants between pretest and posttest will affect the OCB. But I am having problems to match the pretests and posttests since I will not demand any ID info. I need to match this tests, because before the pretest, I will examine a characteristic trait and conduct the research on the groups based on these different characteristic traits. I mean the participants will be categorized as A and B groups based on their characteristic traits, then I will be able to say that the OCB changes on group A is like this, and on group it is like that...
Thanks in advance.
One way is with self-generated identification codes. These are factual questions you ask someone that will create unique answers that you can match the surveys on. We use questions like the city where you were born, and the name of the high school where you graduated. Here's some references to papers about this technique:
Kearney, K. A., Hopkins, R. H., Armand, L. M., & Weisheit, R. A. (1984). Self-generated identification codes for anonymous collection of longitudinal questionnaire data. The Public Opinion Quarterly, 48(1), 370-378. doi:10.2307/2748630
Schnell, R., Bachteler, T., & Reiher, J. (2010). Improving the use of self-generated identification codes. Evaluation Review, 34(5), 391-418. doi:10.1177/0193841x10387576
Yurek, L. A., Vasey, J., & Sullivan Havens, D. (2008). The use of self-generated identification codes in longitudinal research. Evaluation Review, 32(5), 435-452. doi:10.1177/0193841x08316676
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