How to recruit participants
There are multiple platforms and methods to recruit participants. You have to select the one which fits best to your study, and you have the resources for it as well. Here is a not comprehensive list of possible recruiting options.
- Amazon Mechanical Turk (MTurk): Crowdsourcing marketplace; only works in 13 countries.
- Prolific: Crowdsourcing marketplace; minimal participant fee $6.5, you pay dollar/data point
Securing Protocol Delivery
A good resource from clinical research is here.