If you like the basic concept of doing surveys for cash, but want to take it to another level and earn more, you might want to consider participating in paid research studies online and online focus ...

Want to earn hundreds — and potentially thousands — of dollars to test vaccines, medical devices and other health treatments? That’s the deal you get when you agree to “volunteer” for clinical studies ...

Lizzy and Joanne Linford stand outside Icon Health Studies as Joanne prepares for her weeklong study. Icon Health Studies offers individuals compensation for participating in medical research. (Photo ...