Dear Colleagues,  

We are currently in the preparation phase of a meta-analysis on Cyberball (and similar games), to study the effects of ostracism. We hope to be as comprehensive as possible in our data-collection and therefore would like to ask you whether you have any unpublished data, manuscripts, in-press papers, conference papers, dissertations, or informal write-ups that could be of help to us.

Our inclusion criteria are:

-Manipulation of social inclusion-ostracism via Cyberball (or any other tossing game that induces ostracism)  

-Immediate measures after the cyberball game (e.g., need satisfaction, mood), delayed measures (e.g., coping behavior), or a combination of immediate and delayed measures.  

-We are interested in successful and failed attempts  

If it concerns unpublished data or an unfinished write-up, please include a short description of the study (assignment procedure, conditions, measures) and test statistics (confidence intervals and effect sizes next to F and p values) or the data set from which we can retrieve these values.  

Any help is greatly appreciated and can be e-mailed to meta.cyberball@gmail.com (for ease of oversight). For questions, please feel free to e-mail to c.hartgerink@gmail.com.  

Kind regards,

Ilja van Beest, Tilburg University

Chris Hartgerink, Tilburg University

Jelte Wicherts, Tilburg University

Kip Williams, Purdue University