Paired T-test effect size

I hesitated a little bit about writing that phrase. But I guess that google is not our friend any more. So maybe could be a better friend. It does find the kind of links that I was thinking of.

It is really bad that google and many other large companies have been spying on us in the whole world.

Thank you Karabiner!
Thanks all. Yep - went that route. Really was wondering if anyone uses one consistently, and has a reference to it. I have searched and found a couple - some sites with wrong calcs. I'm currently using Morris and DeShon, 2002? Anyone else use that as well?