In this tutorial we will be adding a Sequential Priming Task to a Psychexp project.
Let us begin by firstly logging in to psychexp and then select "Add New Project" from the menu.
Enter a project name and click submit. (We will call our project "PROJECT 1")
You will be returned to the dashboard, so then find the project you just created in the project list and click "Open".
You are now on the project home page, so click on the "Edit Project" button from the side menu.
When you first create a project in Psychexp a block with one single choice question is inserted by default.
We are going to add the Sequential Priming Task below this default block by simply clicking the "ADD EXPERIMENT" button and selecting "SEQUENTIAL PRIMING TASK" from the list that is displayed.
A fully functional Sequential Priming Task has now been inserted.
Let's take a look at the structure of the default experiment, and then see how you can customize it to make it your own.
The entire experiment is housed inside of a single block named "Default Block". You can change the name of the block by clicking on the edit (pencil) icon next to the block name.
By clicking on the experiment block settings (cog) icon, you can make changes to the following settings of the experiment;
Next you will see a text only information page that is shown to the participant before the experiment begins. This page is fully customizable by clicking the edit (pencil) icon. You can also add extra pages by clicking the "Add Text Only Page" Button.
Following the information page there are five sections. These five sections include all the components that will be used to build the flow of the experiment.
Now we will look at the flow of the Sequential Priming Task. The flow comprises of Flow blocks and sub-flow blocks. The sub-flow blocks within a flow block can be randomized by clicking the Flow Block settings (cog) icon.
You can add as many blocks or sub-flow blocks as you wish to create your desired experiment.
The sub-flow block contains the following components.
Each trial displays the following components in the order shown below.
If you wish you can choose not to display a fixation point or mask by setting the dropdown to "NONE" and then change the number of milliseconds to zero by clicking the settings (cog) icon.
Each set of "PRIME CATEGORY" x "TARGET CATEGORY" that you set will randomly display all possible combinations of each target stimulus in the target category paired against each prime stimulus in the prime category. (Example: 2 prime stimulus x 2 target stimulus = 4 combinations).
By clicking the sub-flow block settings (cog) icon, you can change the following settings.
After you have made changes to the default experiment, you can see a live preview of the experiment by clicking the "Preview" button at the bottom of the page. You can preview the project as many times as you want. The preview screens are identical to the screens your participants will see when you distribute your project, however the data from a preview is not saved in the dataset.
Once you are happy with the design of your experiment you can then adjust the flow of your entire project by editing or deleting the default survey question block that was inserted when you initially made the project. You can also add more survey question blocks or even other experiment blocks under your current experiment by simply clicking on the "ADD BLOCK" or "ADD EXPERIMENT" buttons at the bottom of the page. The combination of experiments and survey questions that you can achieve is only limited by your own imagination!
Before distributing your project to your participants be sure to adjust the project settings by clicking on "Project Settings" in the menu.
These are just a few of the many settings you can adjust:
When you are ready to distribute your project to your participants, click on "QR code" in the menu to get the URL link or QR code for this project.
To view the data collected from your participants, click on "Dataset" in the menu.
The dataset will be downloaded in excel format.