By using the unnormed attention test attentiveWeb, the provided data has been collected from users of two crowdsourcing platforms, i.e., Microworkers and Figure Eight, and the users from the online panel WiSo.
The attentiveWeb test is open source and availabe at https://github.com/lsinfo3/attentiveWeb
Please cite the following article when using the data
Göritz, A. S., Borchert, K. and Hirth, M.
Using attention testing to select crowdsourced workers and research participants
Social Science Computer Review Journal (2019)