LIONESS Lab is a free web-based platform for interactive online experiments.
LIONESS (Live Interactive Online Experimental Server Software) experiments include standardized methods to deal with group formation, attrition and other challenges of interactive online experiments.

Easy and fast development

To speed up the development process, LIONESS Lab offers a simple what-you-see-is-what-you-get environment to click together your LIONESS experiments. Just combine different elements to design the participants’ interface and add some JavaScript for calculations.

Live web-based interaction

LIONESS experiments include standardized measures to deal with methodological challenges of online experiments, such as forming groups, retaining participants’ attention and handling drop-outs. LIONESS focuses on online interactions, in which participants get live feedback from others.

No installation needed

LIONESS Lab is a fully web-based platform. This means that you only have to create an account and can directly start to develop and test your LIONESS experiments. You can also download LIONESS experiments and run them on your own server.

Share your experiments

LIONESS experiments can be shared with other experimenters and co-authors. The growing repository of LIONESS experiments provides a good starting point for developing your own experiments by modifying existing ones. You can choose to make your experiments ‘private’ or publicly share them with others, enabling others to build on your design and facilitating replication of results.
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