Online experiments manual

This manual uses Psiturk and custom JavaScript code for creating online experiments.

Contributors: Ivan Grahek

Last update: 02/07/23

Contents

1. Installing Psiturk

Installing Psiturk

Install Psiturk within a new conda environment. Psiturk currently runs only on Linux and MacOS. Python 3.7 currently works well with Psiturk, so we install that version in our conda environment.

Install Anaconda or Miniconda

** Make sure to install in a reasonable folder (do not install on top of all of your other files)

https://docs.anaconda.com/anaconda/install/index.html

Create a conda environment

conda create -n psiturk
conda activate psiturk
conda install python=3.7
pip install cryptography==36.0.2  [solves a dependency issue on 02/07/2023]
pip install psiturk

Run a test experiment

After you have installed Psiturk, you can run an example experiment to make sure that it was successfully installed. You will run the psi-turk example locally (on your computer). Before starting Psiturk, make sure that you activate your newly created conda environment (see above). More details here: https://psiturk.readthedocs.io/en/latest/quickstart.html

In your terminal navigate to the folder where you want your experiment to be.

Activate the conda environment

conda activate psiturk

Start psiturk (Ignore the warning about the AWS credentials)

psiturk

Create a folder with an example experiment (Stroop)

psiturk-setup-example 

Go into the newly created folder

cd psiturk-example 

Run the experiment in your browser

psiturk server on
psiturk debug

To get the link to the experiment (e.g., to send to a collaborator once the experiment is running on the server).

psiturk debug -p