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Welcome to the
Neiworth Primate Work Site!

Email: Julie Neiworth

To see Alveus Sanctuary work,  click Sanctuary Work in menu above

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To meet the tamarins from Carleton or see our research, click Meet the Tamarins! or Research above.

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To see Oregon Primate Rescue, click on Sanctuary Work in menu above.

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Hello! Please note that we update this site every month with new findings, pictures, lab happenings, so keep tuned in and check often.​

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We are still compiling data on the tamarins' cognitive and perceptual abilities, and will be posting archival video footage and new publications here, as well as our work to donate important support/supplies to primate sanctuaries (shout out to Alveus Sanctuary and Oregon Primate Rescue)!

 

       We cared for and worked with:

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  • 32 monkeys that have spanned over three generations

  • About 166 undergraduate collaborators to date 

  • Five NIH grants, totaling $1.7 million dollars and

  • More than 2 dozen publications and presentations

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Haagen Dasz, contemplating her choices. (2019, Chris Leppink-Shands)

Read the LATEST current work being published from the lab. This just in (Oct 2025), our publication in the Journal of Comparative Psychology entitled "Cognitive tasks show age-related decline over a 10-year period in a natural aging monkey model, cotton-top tamarins (Saguinus oedipus)." 

​See the latest PowerPoint presentation  (this opens as a YouTube video of the PPT alone, with videos of monkeys doing the tasks) of 10 years of cognitive decline and savings in cotton top tamarins, presented by Julie Neiworth, Ella Rogers ('24, Tamarin Cognition Educational Associate), and Eliza Hawthorne (Psychology major, '26) at the 32nd annual meeting of the International Comparative Cognition Society in Albuquerque, NM, March 29, 2025. 

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Read recent work being published  in (Oct 16, 2023) in Nature's Scientific Reports entitled "A recognition test in monkeys to differentiate recollection from familiarity memory." 

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Most recent grant: NIH AREA grant 2R15AG051940-02 (see NIH RePORTER), Longitudinal Cognitive Behavioral Testing and Immunohistochemical Assessment of Alzheimer’s Disease Markers, Immune Response, Neurogenesis, and Cell Loss in a Natural Aging Primate Model, $438,067, Feb 2021 – Jan 2025.

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©2026 by Neiworth Primate Work Site

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