Dynamics of engagement in Citizen Science: Results from the “Yes, I do!” project

Citizen science projects need to attract citizens and motivate them to dedicate their energy and time to
science. Recruiting enough participants and keeping them engaged throughout the project is often a big
challenge for the scientists involved. In this paper, recruiting and engagement strategies are evaluated
for a successful midsize online citizen science project in the field of humanities. Quantitative measures
are applied to track the quantity and quality of citizens’ contributions over time, allowing understanding
of the dynamics of engagement in citizen science. The study shows that monitoring the level of activity
and the quality of contributions provides useful insights about a project’s dynamics. We found that a small
core group of volunteers was responsible for most of the input to the project, that their transcriptions
were very accurate from the start, and that prompt feedback on their performance was important to
keep activity levels high.