Xu, Z. J., Lleras, A., & Buetti, S. (under revision) Toward a Better Understanding of Target Distinctiveness in Visual Search: How Color, Shape, and Texture Information Combine to Guide Search. Journal of Experimental Psychology: General.
Tan, H.J.H., Lleras, A., Xu, Z.J., Ding, Y., & Buetti, S. (under revision) Evaluating the contributions of top-down and bottom-up processing on eye movements during parallel visual search. Attention, Perception, & Psychophysics.
Lleras, A., Xu, Z. J., Tan, H. J. H., Shao, Y., & Buetti, S. (2025). Quantifying the relationship between search efficiency and perceptual similarity in color space across different efficient search tasks. Journal of Experimental Psychology: Human Perception and Performance, 51(7), 850–874. https://doi.org/10.1037/xhp0001327
Cui, A. Y., Buetti, S., Xu, Z. J., Lleras, A. (2025). Evaluating the Contribution of Parallel Processing of Color and Shape in a Conjunction Search Task. Scientific Reports, 15(1), 7760. https://doi.org/10.1038/s41598-025-92453-3
Xu, Z. J., Lleras, A., Gong, Z. G., & Buetti, S. (2024). Top-down instructions influence the attentional weight on color and shape dimensions during bidimensional search. Scientific reports, 14(1), 31376. https://doi.org/10.1038/s41598-024-82866-x
Xu, Z. J., Buetti, S., Xia, Y., & Lleras, A. (2024). Skills and cautiousness predict performance in difficult search. Attention, Perception, & Psychophysics, 86(6), 1897-1912. https://doi.org/10.3758/s13414-024-02923-5
Lleras, A., Buetti, S., & Xu, Z. J. (2022). Incorporating the properties of peripheral vision into theories of visual search. Nature Reviews Psychology, 1(10), 590-604. https://doi.org/10.1038/s44159-022-00097-1
Xu, Z. J., Lleras, A., Shao, Y., & Buetti, S. (2021). Distractor–distractor interactions in visual search for oriented targets explain the increased difficulty observed in nonlinearly separable conditions. Journal of Experimental Psychology: Human Perception and Performance, 47(9), 1274. https://doi.org/10.1037/xhp0000941
Xu, Z. J., Lleras, A., & Buetti, S. (2021) Predicting how surface texture and shape combine in the human visual system to direct attention. Scientific Reports, 11(1), 6170. https://doi.org/10.1038/s41598-021-85605-8
Lleras, A., Wang, Z., Ng, G. J. P., Ballew, K., Xu, J., & Buetti, S. (2020). A target contrast signal theory of parallel processing in goal-directed search. Attention, Perception, & Psychophysics, 82, 394-425. https://doi.org/10.3758/s13414-019-01928-9
Buetti, S., Xu, J., & Lleras, A. (2019). Predicting how color and shape combine in the human visual system to direct attention. Scientific Reports, 9(1), 1-11. https://doi.org/10.1038/s41598-019-56238-9
Xu, Z. J., Yu, J. M., Lleras, A., & Buetti, S. (2025). Investigating the contribution of unpredictable target features to attentional guidance. Journal of Vision, 25(9), 2579-2579. doi: https://doi.org/10.1167/jov.25.9.2579. Poster presented at the Annual Meeting of the Vision Sciences Society (VSS).
Yu, J. M., Xu, Z. J., Lleras, A., & Simona, B. (2025). Exploring the Impact of Target-Distractor Featural Contrast on Feature Prioritization in Efficient Visual Search. Journal of Vision, 25(9), 2498-2498. doi: https://doi.org/10.1167/jov.25.9.2498. Poster presented at VSS.
Xu, Z. J., Spjut, J., Boudaoud, B., Buetti, S., Lleras, A., & Rosenholtz, R. (2024, May). Do action video game players search faster than non-players? doi:https://doi.org/10.1167/jov.24.10.129. Talk given at VSS.
Xu, Z. J., Lleras, A., Hummel, J. E., & Buetti, S. (2023, May). Does visual distinctiveness from an unexpected feature dimension facilitate search?. Journal of Vision, 23(9), 5896-5896. doi: https://doi.org/10.1167/jov.23.9.5896. Poster presented at VSS.
Xu, Z. J., Lleras, A., Hummel, J. E., & Buetti, S. (2022, May) Distractor heterogeneity as the cause of the linear separability effect. Journal of Vision, 22(14):4435-4435. doi: https://doi.org/10.1167/jov.22.14.4435. Poster presented at VSS.
Tan, H. J. H., Buetti, S., Xu, Z. J., & Lleras, A. (2022). Testing feature boosting theories of visual attention in the color dimension using online experiments. Journal of Vision, 22(14), 4333-4333. doi:https://doi.org/10.1167/jov.22.14.4333. Poster presented at VSS.
Xu, Z. J., Ng, G., Lleras, A., Hummel, J. E., & Buetti, S. (2021, May) How does multidimensional complexity impact processing efficiency in visual search?. Journal of Vision, 21(9), 2168-2168.doi: https://doi.org/10.1167/jov.21.9.2168. Poster presented at VSS.
Xu, J., Lleras, A., & Buetti, S. (2020 November). A new prediction-based approach to study visual search and attention. Poster presented at the Annual Meeting of the Psychonomic Society.
Buetti, S., Shao, Y., Xu, J., & Lleras, A. (2020 May). Re-examining the linear separability effect in visual search for oriented targets. Journal of Vision, 20(11), 1244-1244. doi: https://doi.org/10.1167/jov.20.11.1244. Poster presented at VSS.
Xu, J., Lleras, A., & Buetti, S. (2020 May). How texture and shape distinctiveness combine in the visual system to guide attention? Journal of Vision, 20(11), 1253-1253. doi: https://doi.org/10.1167/jov.20.11.1253. Poster presented at VSS.
Xu, J., Ballew, K., Lleras, A., & Buetti, S. (2019, May). Do people’s visual ability skill predict search efficiency under difficult search conditions?. Journal of Vision, 19(10), 233b-233b. doi: https://doi.org/10.1167/19.10.233b. Poster presented at VSS.
Ballew, K., Xu, J., Lleras, A., & Buetti, S. (2019, May). An individual differences investigation of the relationship between visuospatial working memory capacity and inefficient search. Journal of Vision, 19(10), 316-316. doi: https://doi.org/10.1167/19.10.316. Poster presented at VSS.
Yang, B., Xu, J., Zhang, F., Buetti, S. (2019, April) Does time perception of emotional events vary across Asian and Westerner participants? Poster presented at UIUC undergraduate research symposium.
Xu, J., Lleras, A., & Buetti, S. (2018, May). Is there a relationship between object recognition ability and visual search efficiency?. Journal of Vision, 18(10), 525-525. doi: https://doi.org/10.1167/18.10.525. Poster presented at VSS.
Lleras, A., Xu, J., & Buetti, S. (2018, May). How do differences across visual features combine to determine visual search efficiency in parallel search?. Journal of Vision, 18(10), 282-282. doi: https://doi.org/10.1167/18.10.282. Poster presented at VSS.