Hi, yâ€™all. As a graduate student, I am really excited to run a study in Prolific. I noticed that Prolific has a discount for academia. However, I didnâ€™t get this discount for some reason though I have registered with my work email (school email with .edu). I am not sure whether I missed something or not. Does anyone know how to solve this? I really appreciate it! Have a good day!

Hi Yating_Yang, it turns out that the 25% is off of the â€śtotal spendâ€ť (in Prolificâ€™s language). So if your (own) calculated total payment to all subjects is X, you would actually multiply that amount by 1.3333 (that is, 100% + 33.33%) to get the actual final amount of (1.33)(X). For example, suppose that the â€śstudy rewardsâ€ť you have to pay is $900, then the total cost will be: 900 * 1.3333 = $1,200. In this way, the â€śservice feeâ€ť that Prolific calculates is 1200 - 900 = $300, which is exactly 25% of the total $1,200. I hope this clears things up.

Honestly, this is the first time in my life I have seen the fee calculated this way for a service. It took me some time (and some back-and-forth correspondence with Prolific support) to figure it out, as I thought this was a very sleazy business practice. So thank you for raising the question, making me realize that I was not alone in this. Just curious how many fellow researchers out there get confused by Prolificâ€™s â€ś25%â€ť advertisement like you and I did.

Also, not related to your question, but I urge you and future researchers who come across this post to be wary of international transaction fees if you are not based in the UK. I am based in the US, and I am charged an annoying additional fee of 3% by my bank for each transaction with Prolific (I never noticed this fee until I looked at my bank statement by accident). I am not blaming Prolific, since this is beyond their control and related to banksâ€™ operations. But it would be nice if they disclosed this from the get-go. Really frustrating experiences I must say!

Thank you! The whole system is not so easy to understandâ€¦