Inquisit FAQ (Frequently Asked Questions)

Inquisit Web Licensing

  • Can I run more than one subject at a time with a single Inquisit Web license?

    Yes. There are no limits on the number of participants who can run your Inquisit Web experiment, simultaneously or otherwise.

  • Can I run my experiment on more than one device with a single Inquisit Web license?

    Yes. There are no limits on the number of devices that can run your Inquisit Web experiment.

  • Can I administer more than one test with a single Inquisit Web license?

    Yes. There are no limits on the number of tests that be administered in your Inquisit Web experiment.

  • Is an Inquisit Web experiment a single test?

    No. An Inquisit Web experiment can consist of batteries of tests and can accommodate a wide range of experimental designs, including between-subject variations, clinical trials, and longitudinal studies with different tests administered at different phases.

  • Does my Inquisit Web license start as soon as I order it?

    No. When you are ready to start your license, you can do so by logging into your account and clicking the start link for the license.

  • Do I need to purchase an Inquisit Lab license to run online experiments?

    No. Inquisit Lab is used for a) in-person testing on dedicated computers, and b) programming or customizing tests. If neither situation applies to you, you do NOT need an Inquisit Lab license to run online experiments. You only need an Inquisit Web license.

  • What happens to my data when my Inquisit Web license expires?

    Your data will remain available in your account for download for 5 years unless you delete them before that. After 5 years, they will be archived and can be retrieved for a fee.

  • I want to use Inquisit Web with Mechanical Turk, Qualtrics, Unipark, Survey Monkey, or some other 3rd-party web product. Is this possible?

    Yes, please see our help topic on using Inquisit with 3rd party online packages

  • How long do you support Inquisit Web Perpetual licenses?

    Perpetual license do not expire, so you may continue using them as long as you like. Perpetual licenses include 3 years of free updates, after which you can optionally renew them if your require further updates.

  • Is there a free trial for Inquisit Web?

    No. However, you can see how your script will run as well as the data output using the free-trial for Inquisit Lab. The test administration and data output are exactly the same with Inquisit Web and Inquisit Lab. You can see how Inquisit Web runs tests by visiting our test library and clicking the "Run Demo" link for a give test.

  • I purchased a 1-year Inquisit Web license, and I would like to extend it to 3 years. Do I have to pay the full price for a 3-year license?

    No. Shorter licenses can be extended to longer licenses for the difference in price of the two licenses. The start date of the longer license will be set to the start date of the original shorter license. Time-limited licenses can not be exchanged towards perpetual license.

Inquisit Lab Licensing

  • Are there ongoing subscription, maintenance, or support fees for Inquisit Lab perpetual licenses?

    No. A perpetual lab license does not expire, so you may continue using it as long as you like. The license includes 3 years of free updates, after which you can optionally renew if you'd like receive to further updates.

  • Can I transfer my licenses to a different computer if my hard drive crashes or I replace my computer?

    Yes, simply go to your registrations and click Transfer for the computer you wish to transfer to free up the license. You can then use that license to register on the new computer.

  • Can I transfer a lab license from Windows to Mac, or Mac to Windows?

    Yes. A lab license covers usage of Inquisit on a Windows or Mac computer.

  • Where does Inquisit Lab save my data?

    Inquisit Lab saves data to the local device. Specifically, data are saved in a subfolder of the folder where you have saved the test.

  • Can I run online or remote experiments with Inquisit Lab?

    No, Inquisit Lab supports running experiments locally on dedicated Windows and Mac computers. To run remote experiments, use Inquisit Web.

  • Can I run experiments on iOS or Android devices with Inquisit Lab?

    No, Inquisit Lab supports running experiments only on Windows and Mac. To run on mobile devices, use Inquisit Web.

  • I purchased Inquisit some time ago, and I wish to purchase more licenses. Do I need to pay for another primary license?

    No, once you've purchased a primary license, any future licenses of that same version and type purchased under your account will be billed at the less expensive "Additional License" rate. When using the online order form, be sure to provide the userid of your account so that the form can detect that you've already purchased a primary license.

  • I wish to program an experiment on one computer and run it on several different computers. How many licenses do I need?

    You will need to purchase a license for each computer you wish to program or run Inquisit on: one primary license for one computer and additional licenses for each of the other computers. We do not have developer-only or runtime-only licenses. If you will be collecting data from a large number of computers (e.g., in a classroom or computer lab setting), consider using Inquisit Web instead in order to avoid having to install and register Inquisit on every machine.

Inquisit Licensing (General)

  • I purchased a primary license and some additional licenses. Can I put these on different accounts?

    No. You will need to purchase a primary license for each account you wish to set up.

  • Several members of my department have purchased individual Inquisit licenses, and now we would like a departmental license. Can we get a discount?

    Yes, if those members have the same version of Inquisit as the departmental license. Contact for a price quote.

  • Does Inquisit Web work on Windows, Mac, iOS, Android, Linux, ...?

    Inquisit Web 6 runs on Windows, Mac OS X, iOS, Android, and Chrome OS. Inquisit Web does not support Linux.

  • Someone else at my university is using Inquisit. Can I purchase licenses at the additional license rate, or must I purchase a primary license?

    If you and your colleague are willing to share an account (i.e., shared access to registration keys, on-line experiments, and web data), then you can pay the additional license rate and purchase Inquisit on the existing account. If you want your own, unshared account, you will need a primary license. Any future licenses of the same version and type would be billed at the additional license rate.

    Another option is to purchase a departmental license, which covers all usage within your department. For a price quote, contact Department licenses can not be shared with those who are not a member of the department.

  • I have a license for Inquisit 5 and I'd like to upgrade to Inquisit 6. Do you offer discount pricing?

    Yes, we offer discounted upgrade prices for existing Inquisit license holders. Please see our licensing rates for Inquisit 6 Lab and Inquisit 6 Web.

  • I'm a student who wishes to purchase Inquisit with my own funds, but your prices are too expensive. Help?

    Email explaining your situation, the type and quantity of license(s) you need, and we'll try to work something out with you.

  • I wish to run a task with Inquisit that isn't in your Test Library. Can you add it?

    We have programmed most of the tasks in our library based on customer requests, so if the task you'd like is fairly well known or well-established in the research literature, it's broadly interesting to other researchers, and it's possible to implement it with Inquisit, we will likely program it for you without charge on the condition that we maintain copyright for the script and can put it in our Test Library for others to use freely. For scripts that are of narrower interest, we offer programming services at reasonable rates. If you have a proprietary task and you'd like to partner with Millisecond, we are happy to do so. Email with your request, including any relevant research citations that describe the methodology and procedure of the task.

  • Do you offer technical support?

    Yes, technical support is free for those programming their own scripts. See our support page for details.


  • The IRB at my institution has questions about how Inquisit Web stores data, protects participant anonymity, etc.

    Please see our security and privacy statements for details.

  • How do I uninstall Inquisit Web from a computer?

    Please see the uninstall page for instructions on removing Inquisit Web from your computer.

  • I'm trying to program an Inquisit script but I'm stuck. What should I do?

    Millisecond offers a number of technical support options to get you unstuck. See our support page for details.


  • I am unable to register Inquisit Lab.

    First, make sure you are logged into the local computer with an administrative account. If you are logged into an administrator account, and you are running Windows Vista or Windows 7, try the following:
    1) Right-click the Inquisit icon and select "Run as administrator"
    2) Register Inquisit.
    Once Inquisit is registered, you can simply launch by double-clicking the icon as normal.

  • How do I register Inquisit on a computer that isn't connected to the network?

    You can register a unconnected computer by obtaining a registration key from a computer that does have web access and then manually entering that key on the unconnected computer. Specifically:

    1. Launch Inquisit on the computer you wish to register.
    2. When the registration window appears, copy down the computer key. Leave the registration window open.
    3. Go to a computer with Internet access, and navigate to our registration page at
    4. Login to the registration page.
    5. On the registration page, select the version of Inquisit you are using and enter the computer key that you copied down previously. Click the "Get Registration Key" button.
    6. Copy down the registration key that the page provides.
    7. Return to the computer you wish to register and enter the registration key in the Inquisit registration window.
    8. Click the "Register Inquisit" button.

    You're done.