(In progress) Hollis, V., Springer, A., & Whittaker, S. Who to Believe? Confirmation Not Self-Discovery When Personal Informatics Contradict Prior Self Beliefs.

(In progress) Hollis, V.& Whittaker, S. Don’t Worry, Be Happy’: Positivity Goals in Emotion-Tracking Technologies Reduce System Engagement and Feelings of Success.

Rohani, D. A., Springer, A., Hollis, V., Bardram, J. E., & Whittaker, S. (2020). Recommending Activities for Mental Health and Well-being: Insights from Two User Studies. IEEE Transactions on Emerging Topics in Computing.
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Hollis, V., Pekurovsky, A., Wu, E., & Whittaker, S. (2018). On Being Told How We Feel: How Algorithmic Sensor Feedback Influences Emotion Perception. Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, 2(3), 1-31.
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Springer, A., Hollis, V., & Whittaker, S. (2018). Mood modeling: accuracy depends on active logging and reflection. Personal and Ubiquitous Computing, 22(4), 723-737.

Hollis, V. (2018). On Being ‘Fitter, Happier, and More Productive’: The Impact of Implicit Goals in Affective Personal Informatics (Doctoral dissertation, UC Santa Cruz).
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Sridhar, D., Springer, A., Hollis, V., Whittaker, S., & Getoor, L. (2018). Estimating Causal Effects of Exercise from Mood Logging Data.

Hollis, V., Konrad, A., Springer, A., Antoun, M., Antoun, C., Martin, R., & Whittaker, S. (2017). What does all this data mean for my future mood? Actionable analytics and targeted reflection for emotional well-being. Human–Computer Interaction, 32(5-6), 208-267.

Melcer, E. F., Hollis, V., & Isbister, K. (2017, May). Tangibles vs. mouse in educational programming games: Influences on enjoyment and self-beliefs. In Proceedings of the 2017 CHI conference extended abstracts on human factors in computing systems (pp. 1901-1908).

Springer, A., Hollis, V., & Whittaker, S. (2017, March). Dice in the black box: User experiences with an inscrutable algorithm. In 2017 AAAI Spring Symposium Series.

Whittaker, S., Kalnikaite, V., Hollis, V., & Guydish, A. (2016, May). ‘Don’t Waste My Time’: Use of Time Information Improves Focus. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems (pp. 1729-1738). ACM.

Hollis, V., Konrad, A., & Whittaker, S. (2015, April). Change of heart: emotion tracking to promote behavior change. In Proceedings of the 33rd annual ACM conference on human factors in computing systems (pp. 2643-2652).

Isaacs, E., Konrad, A., Walendowski, A., Lennig, T., Hollis, V., & Whittaker, S. (2013, April). Echoes from the past: how technology mediated reflection improves well-being. In Proceedings of the SIGCHI conference on human factors in computing systems (pp. 1071-1080).
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