 Hi, my name is Sebastian Mato and in this video, I will show you how you can install the Actpub extension in OpenSesame and this extension will allow you to participate in the Actpub experiment. And the goal of this experiment is to improve the usability of OpenSesame and at the same time to understand our visual perception a little bit better. Now, let's see how you can install this extension on Windows. So I have OpenSesame installed. You can see it in the start menu. To install the extension, you need to run OpenSesame as administrator. So I right click OpenSesame and say run as administrator. Yes, the reason that you need to run it as administrator is that the extension will be installed into the program folder, which requires administrator rights. OK, now we have OpenSesame has started. I show the debug window, click on this button. In the debug window, I say import pip. Pip is a Python package for installing Python packages. So it's kind of like the package manager. And then I type pip.main, open round bracket, open square bracket, between quotes, install, quote, comma, between quotes, openSesame, openSesame, extension, close, quote, close, square bracket, close, round bracket, press, enter, up, and there it will install the openSesame extension. Now, it's important that you type this exactly as I've typed it here, right? So pip.main, open round bracket, open square bracket, install, between quotes, comma, openSesame, extension, hide, between quotes, close, square bracket, close, round bracket. Now, once you've done that, the extension is installed. But to activate the extension, you need to restart OpenSesame. So let's hide the debug window, close OpenSesame. Now I can start OpenSesame again. This time, I don't need to start it as administrator. I can just run it straight away. And now when I launch it, you will see, OK, thank you for participating in it. It will give you a little bit of information. And to give consent, you need to answer one question that will start the experiment. You have to indicate how experienced you are as a Python program. But before I do that, let's take a look at the ethics and privacy side of this experiment, which is very important, I think. So what this extension will do is count the number of times that you press a particular class of keys within a certain period, within a minute. In other words, for example, it will count that you have pressed a letter, say 25 times within a minute. It doesn't remember which letters you press and doesn't remember the order of the letters, just how often you pressed a letter within a minute. And it also remembers a few different classes of keys, for example, navigation keys, delete keys, et cetera. And these measures will allow me to assess basically your typing performance while using Open Sesame without me being able to tell what exactly you're doing with Open Sesame, right? So I will not know what you're using Open Sesame for. I will not know who you are because all information is anonymous, but I will have some measure of typing performance. That's the idea. But your anonymity is guaranteed. Now, to start, let's say, well, I'm a very experienced Python programmer. I think I can say I did, after all, program Open Sesame in Python. So I click here. And now I'm participating in the experiment. You don't need to do anything special to participate. Just use Open Sesame as you normally would. And that's it. The experiment stops either when I, from my side, decide to stop the experiment, in which case the extension will become disabled. Or if you decide that you no longer want to participate yourself. Of course, I hope that you will participate for quite a while. But if you don't want to participate anymore, what you can do is simply go to Tools, Plugin and Extension Manager. You will see the active extension. You disable it. And then close Open Sesame. And the next time that you start Open Sesame, the extension will be disabled. And you can do that at any time. OK, well, I hope you will participate in this experiment. And thank you for your attention.