Greg Thomas Chism

Interests

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Courses

Scholarly Contributions

Chapters

• Keiser, C. N., Lichtenstein, J., Wright, C. M., Chism, G. T., Pruitt, J. N., Gonzalez-Santoyo, I. .., & Gonzalez-Tokman, D. .. (2018). Personality and behavioral syndromes in insects and spiders. In Insect behavior: From mechanisms to ecological and evolutionary consequences(pp 236-256).

Journals/Publications

• De La Rosa, J. S., Chism, G. T., Herder, K. E., Mun, C. J., & Aaron, R. V. (2025). Reliability and equivalence of the 8-item version of the Patient Health Questionnaire (PHQ-8) to screen for depressive symptoms in adults with chronic pain: A representative U.S. population study. medRxiv : the preprint server for health sciences.
  More info

  The 8-item Patient Health Questionnaire (PHQ-8) is the most widely implemented clinical depression screener in the world and is increasingly influential in population surveillance of unmet mental health needs. However, in the context of chronic pain (CP), depression screening could be complicated by overlapping symptoms. Inaccurate attribution of CP symptoms to depression could lead to overestimation of depressive symptom severity or even artifactual inflation of depression prevalence estimates. Results of small, non-representative studies are heterogenous; suitability of the PHQ-8 to screen for depression in those with CP remains unclear. We aimed to determine the reliability and equivalence of PHQ-8 in adults with and without CP.
• Chism, G. T. (2024).

  JupyterQuest: v0.4.0

  . Zenodo.
• Chism, G. T., Nichols, W., & Dornhaus, A. (2024). Cavity geometry shapes overall ant colony organization through spatial limits, but workers maintain fidelity zones. Animal Behaviour, 216, 195-211.
• Swetnam, T. L., Antin, P. B., Bartelme, R., Bucksch, A., Camhy, D., Chism, G., & Lyons, E. (2024). CyVerse: Cyberinfrastructure for open science. PLOS Computational Biology, 20(2), e1011270.
• Chism, G. T., Faron, W., & Dornhaus, A. (2022). Temnothorax rugatulus ants do not change their nest walls in response to environmental humidity. bioRxiv.
• Davis, S. M., Chism, G. T., Maurer, M. M., Trejo, J. E., Garcia, R. J., & Schlenke, T. A. (2022). A hymenopteran odorant alerts flies to bury eggs. bioRxiv.
• McEwen, B. L., Lichtenstein, J. L., Fisher, D. N., Wright, C. M., Chism, G. T., Pinter-Wollman, N., & Pruitt, J. N. (2020). Predictors of colony extinction vary by habitat type in social spiders. Behavioral ecology and sociobiology, 74(1).
  More info

  Many animal societies are susceptible to mass mortality events and collapse. Elucidating how environmental pressures determine patterns of collapse is important for understanding how such societies function and evolve. Using the social spider , we investigated the environmental drivers of colony extinction along two precipitation gradients across southern Africa, using the Namib and Kalahari deserts versus wetter savanna habitats to the north and east. We deployed experimental colonies ( = 242) along two ~ 800-km transects and returned to assess colony success in the field after 2 months. Specifically, we noted colony extinction events after the 2-month duration and collected environmental data on the correlates of those extinction events (e.g., evidence of ant attacks, no. of prey captured). We found that colony extinction events at desert sites were more frequently associated with attacks by predatory ants as compared with savanna sites, while colony extinctions in wetter savannas sites were more tightly associated with fungal outbreaks. Our findings support the hypothesis that environments vary in the selection pressures that they impose on social organisms, which may explain why different social phenotypes are often favored in each habitat.
• Rice, L., Tate, S., Farynyk, D., Sun, J., Chism, G., Charbonneau, D., & Shin, M. C. (2020). ABCTracker: an easy-to-use, cloud-based application for tracking multiple objects. arXiv preprint.
• Pruitt, J. N., Wright, C. M., Lichtenstein, J. L., Chism, G. T., McEwen, B. L., Kamath, A., & Pinter-Wollman, N. .. (2018). Selection for collective aggressiveness favors social susceptibility in social spiders. Current Biology, 28(1), 100-105.
• Foster, W. C., Armstrong, C. M., Chism, G. T., & Pruitt, J. N. (2017). Smaller and bolder prey snails have higher survival in staged encounters with the sea star Pisaster giganteus. Current Zoology, 63(6), 633-638.
• Lichtenstein, J. L., Chism, G. T., Kamath, A., & Pruitt, J. N. (2017). Intrain-dividual behavioral variability predicts foraging outcome in a beach-dwelling jumping spider. Scientific Reports, 7(1), 18063.

Other Teaching Materials

• Chism, G. T. (2025.

  INFO-511-F25/info-511-f25: Fall 2025 Course Website + Materials

  . Zenodo.
• Chism, G. T., & Chen, J. (2025.

  INFO-523-F25/INFO-523-F25: INFO 523 Fall 2025 Website

  . Zenodo.

Others

• Chism, G. T., & Rosa, J. (2025, aug).

  MH-CP-UArizona/PHQ-MH-CP: (Pre-release) PHQ-MH-CP Compendium

  . Zenodo. https://doi.org/10.5281/zenodo.16954665
• Chism, G. (2022). Data7-EDA-In-Python-Book: Data7 EDA in Python Learning Materials (v2.0.0).
• Chism, G. (2022). Gchism94/DSI-KEYS2022-DataSci: Data7 KEYS 2022 Internship Data Science Materials (v2.0.0).
• Chism, G. (2022). Gchism94/Data7-EDA-In-R-Workshops: Data7 EDA in R Workshop Series (v1.0.0).
• Chism, G. (2022). Gchism94/Data7-EDA-In-SQL: Data7 EDA in SQL (v1.0.0).
• Chism, G. (2022). Gchism94/Data7-EDA-In-Shell: Data7 EDA in Unix Shell (v1.0.0).
• Chism, G. (2022). Gchism94/Data7-rrtools-repro-research: Data7 Reproducible Research in GitHub and RStudio Workshop Series (v2.0.0).