Research/Economic Treaties

I'm wondering this myself. In my last game I entered into both of these with the same race and the next turn I had around 50BC net from my economy where as before that I had probably 4BC net. The research I couldn't find any listed bonus on the screens.

Did anyone notice if there was a way to set the duration of the treaty and/or the specific traded amounts? Also once you enter a treaty with one empire you can no longer offer that treaty to another. No idea if that is intended or not.

These treaties are permanent and can only be given to one race. Last I saw, the amount of bonus income gained by the receiver was 1/6 or less of the giver's economy, but I could be mistaken and it may also have been changed, so don't quote me on it.

You can see your research points per round at the technology screen, at the right upper corner. you can see how much research points you are gaining from research treaties, too. You do not seem to loose anything from the treaties, just the other side gains some percentage of your won income.

Currently, the Economy and Research treaties share 10% of the civ's income or research spending with the other civ.
They do not take away anything from the offering civ.

You can only share your economy with one civ.  Same is true for research.  You do not have to share your economy with the same civ with which you share your research. These treaties are permanent until war is declared or one of the civs is eliminated. 

Once the deal is broken, you can then offer it to someone else.