|Before you can use PsyToolkit on Linux, you will need to install Linux. This is not as difficult as you may think it is. Anyone can do it!|
PsyToolkit can be used in the laboratory on dedicated computers. PsyToolkit is actually being developed on Linux systems, because the developer is a big Linux fan.
What is Linux?
Linux is a freely downloadable operating system, an alternative to Microsoft Windows and Apple Mac.
Linux comes with a nice desktop and many applications, including the LibreOffice suite, which is easy to use and just as good (if not better) as commercial ones.
Linux is a widely used operating system, used around the world.
Linux has many advantages for users:
Linux does not cost money (you can download it for free)
Linux is highly configurable
Linux works well on older computers
It is easy to install
Is it difficult to install Linux?
Linux is very easy to install on your computer:
You need to download a Linux ISO file (see below)
You need to put this downloaded file on a USB stick or DVD disc.
If you have Windows, make sure you have data on your computer for an extra operating system (around 10GB is enough); you can install Linux while keeping Windows.
Put the disc in your computer, make sure your computer can boot from it, and then start computer.
Now it takes around 15 minutes to install.
If you are new to Linux, make sure read a good intro on installation, for example Install Linux Mint.
You can download an easy to install Linux flavor, such as
|There is no need for a Windows version of PsyToolkit. This because anyone who does not want to (or is not allowed to) install Linux, for example on a University computer, can use the browser-based version.|
Linux offers different "desktop environments". They look very different from one another. The main ones are: Cinnamon (Mint default), KDE, Gnome, and Ubuntu’s own one.
For PsyToolkit, I strongly recommend XFCE, because it gives you more control than other desktop environments, although it is not necessary. For example, only the XFCE display settings dialog allows you to directly change the refresh rate (which only matters if you have an expensive monitor, most monitors work at 60 Hz).
Further, in XFCE you can also switch off the Desktop compositor (under Desktop tweaks), which can make the screen slightly more responsive (this depends on many different things).
Altogether, you do not need to worry about the desktop, but the point is that you can have full control over your system if you want, and a combination of Mint Linux with XFCE makes that easiest to do in my experience.
For whom is the Linux version?
|PsyToolkit is non-commercial, and the Linux package is now only provided to university students and academics.|
PsyToolkit on Linux can have some specific advantages:
For research which needs very high timing precision (note that even the browser-based version has good enough timing to measure even relatively small psychological effects) - To use special hardware, such as Cedrus keyboards or special digitial IO cards (which are supported by PsyToolkit)
There are PsyToolkit functions which can be used only on Linux, in particular the sprite functions (moving objects)
External keyboards and voicekey
Installation of PsyToolkit on Linux
Installing Linux for PsyToolkit is relatively simple and straightforward, especially if you already know a bit about Linux. For Debian-based systems (e.g., Mint and Ubuntu) as well as for RPM based systems (e.g., Fedora) there are ready-to-install packages (see below).
Download and install
|PsyToolkit is available for different Linux distributions in different packaging formats (RPM and Debian, or simply as source file).|
|If you write me for the Linux code, I can only answer if your email comes from a University email address or if you can prove your university association.|
RPM based systems
If you have an RPM-package manager (e.g., Fedora)
|If you use non-Fedora system, you need to install using your specific RPM package manager, such as yum.|
Debian based systems
If you have a Debian based package manager (Debian, Mint, Ubuntu, and many more):
Any other Linux system
PsyToolkit needs quite a few other Linux packages. If you use the RPM or Debian installer, these will be automatically installed. If you install from source, you need to find install these yourself using your packege manager.
Use PsyToolkit on Linux
Once you have installed the PsyToolkit package, it is easy to use. In essence, the coding is the same as in the browser-based version. You can write scripts like you would do in your webbrowser (but you need a text editor). The PsyToolkit scripting language is the same.
You need to compile your scripts in a terminal window (details below).
In this example, you download experiment from PsyToolkit experiment library and compile on your Linux system.
Go to the library: Click here
The select the entry on the Simon task: Click here
Download the "PsyToolkit code zip file" Click here
Go to the folder where the simon.zip file is
Create a new folder
Unpack the zip files into the new folder
Create the experiment:
psycc -t simon.psy
Run the experiment:
In this example, we use exactly the same files as in Example 2, but now you will be able to create a "shortcut" of the experiment on the desktop. Also, we are going to allow the experiment to work in full screen mode.
Copy an example from the examples in the installed example directory
|You can look through your example folder, there are a whole bunch. In order to compile them, you need to copy them to your home directory, as done in the example steps above.|