Many behavioral scientists use a Mechanical Turk workflow where they create a single External HIT with many assignments. This corresponds to a single experiment with many participants. The same HIT is often repurposed for multiple versions of the same experiment, so there's a need for a HIT management tool that facilitates multiple rounds of data collection and updating.

Python and pip. See requirements.txt for the pip dependencies.

Note: install instructions are likely to change

OSX:

sudo pip install -U setuptools
sudo pip install git+git://github.com/longouyang/cosub.git

Note that you probably only need to run the first line if you're on Mavericks.

Windows:

pip install git+git://github.com/longouyang/cosub.git

Note: Folder structure, configuration format, and command arguments are likely to change

Go to a folder where you want to store your settings and results for a single HIT. Inside that folder, place your AWS authentication credentials in auth.json, e.g.,

{
    "access_id": "...",
    "secret_key": "..."
}

and add your HIT settings to settings.json, e.g.,

{
    "title":               "Numbers game",
    "description":         "A simple game about categorizing numbers",
    "keywords":            "Memory, cards",
    "url":                 "https://longouyang.github.io/even-odd/even-odd.html",
    "frame_height":         450,
    "assignment_duration":  "1 hour",
    "auto_approval_delay":  "5 minutes",
    "reward":               0.60,
    "qualifications": {
        "location": "US",
        "approval_percentage": 85
    }
}

Now, you can perform these actions:

cosub create   # create hit based on settings in settings.json
cosub update   # update hit based on settings in settings.json
cosub add <N> assignments
cosub add <N> {days/hours/minutes}
cosub expire   # expire hit
cosub download # download results to sandbox-results/ or production-results/
cosub status   # summarize HIT (settings, time left, # assignments, ...)
cosub history  # show history of cosub actions

By default, actions take place on the sandbox. You can run actions in production mode by adding '-p' after cosub, e.g., cosub -p create creates the HIT on the production site rather than the sandbox.

You can also combine adding assignments and time:

cosub add 40 assignments and 3 hours

cosub is descended, in spirit, from Dan Lassiter's Submiterator. The name means child of submiterator.