# Quick start

## Structure

In `psychopy_ext`, the structure of a project is conceptualized in the following way:

A Project consists of

> Experiments that consist of

> > Tasks that are divided into

> > > Blocks

> > and consist of

> > > Trials that consist of

> > > > Events

> > and can do

> > > Actions (run experiment, show stimuli, ...)

> and Analyses that can do

> > Actions (analyze data in one way, in another way...)

The following figure illustrates the structure of a project and the (least of) functions that you have to modify for your task.

Of course, there are many more options that you can customize, see Basic architecture for an overview or Create an experiment with exp for more information on creating experiments, and Statistics with stats and Pretty plots with plot for data analysis.

## What to do

Start a new project `myproject` by copying the contents of the `demos` folder (in `psychopy_ext/`) to `myproject`. Observe the structure of this folder. Note that `psychopy_ext` encourages all project-related resources (scripts, data, logs, paper) to reside within a single project folder. Your experiments will reside in the `scripts` folder.

The easiest way to create a new experiment is by using `scripts/main.py` as a template. If you need something more complex, try `scripts/twotasks.py` or `scripts/staircase.py`. Refer to `Experiment` and `Task` to learn about various built-in functions.

When done with the experiment, run the project by executing `run.py` file. (In Windows, you can simply double-click on `run.bat` intead.)

If you have more than a single experiment, make another Python file for that experiment, and include the path to it in the `run.py` file.