Did anyone else do the "Learning and Decision Study - up to $16 including BONUS(~ 65 minutes)" HIT? I've been waiting since 6/17 for their approval (which only came last week), and they still have not paid out the $4 bonus I was promised. I have reached out to them twice but they refuse to respond.

 

If requesters do not approve the HIT, it will be automatically approved 30 days later. Sounds like maybe the researcher is out as Amazon shows they typically take 8 days.

Perhaps you will have some luck using Google if you do not have access to the IRB. The lab appears to be affiliated with Columbia, but I have not done the HIT, so only speculating based on 5 seconds of searching. Pick a grad student at the lab and reach out with a polite message seeking assistance.