We conduct two experimental dimensions in a laboratory environment, the control dimension and the transparency dimension. In both dimensions, we elicit subjects’ incentives to share data, by asking them how much of their data they are willing to share with other firms. In the control dimension, we investigate three different treatments with increasing control over shared data: In the first treatment, each firm can decide how much of its data it wants to share on a platform with all other firms having access to all shared data. Consequently, firms have minimal control over their data. In the second treatment, each firm has additionally the option of excluding individual firms from access to its shared data. Finally, in the third treatment, we consider an environment in which each firm can determine exactly how much of its data it wants to share with each individual firm. Thus, in this treatment each firm has full control over its shared data.
Furthermore, we distinguish two different levels of transparency: First, participants have full information on each individual action, even if they are not involved themselves. Thus, each participant knows exactly which firm has shared how much data with which other firm in previous rounds. However, under incomplete information treatments, each participant only has knowledge on actions with her own involvement. More specifically, in the case of the first control treatment, firms only know how much data the other firms have shared in sum but not individually. In the case of the second and third control treatment, firms only know how much data each firm has shared with them, but not how much data the other firms have shared with each other.