• SCIENCE - ongoing!

    There’s always some science happening at the SPIT Lab.

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    Volunteer to participate in a study!

    Use this link, the "Contact us" form at the bottom of the page, or send an e-mail directly to student in charge of the study.

    Sign up to hear about studies here.

    (You must be at least 18 to sign up--for studies including younger participants, email us or contact the student in charge of the study)

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    Snacks and Saliva study

    Purdue IRB 2021-323

    PI: Dr. Cordelia Running

    Student: Katy Pacheco

    The Purdue SPIT lab is conducting a study on Snacks and Saliva. The study involves 4 research visits (remote or in person), 2 separate weeks of snack food consumption, and pays up to $120. To see if you are eligible, take the screening survey at:



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    Vegetable... gummy bears???

    Student: Lissa Davis

    Stay tuned to hear more about our vegetable-flavored gummy bear project! Yes, you read that correctly.

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    Water should not feel like slime!

    Study complete! Results pending.

    Continuing our collaboration with Dr. Georgia Malandraki and I-EAT Lab, we’re looking to use flavors to help people with swallowing disorders. In this study, we are looking to see how older adults with and without swallowing disorders experience the tastes and flavors of beverages.


    Study complete! Details out soon.


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    Trade that sugar for some sparkle!

    Study complete! Results pending.

    Study almost complete! Turns out replacing that sugary soda in your diet with sparkling water might help you learn to like less-sweet beverages. Details coming soon!

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    Crossin' the line--the interfacial line between water and fat, that is.

    Study complete! Results pending.

    Study complete! Details out soon, but short version is people's spit mixes with water and fat differently--which might change the way we all experience fatty foods.

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    Study complete! Results pending.

    Study complete! Details pending. General idea--replacing sugar with fermentable dietary fiber changes cookie texture. Some are still good. Others... are just weird.