Alejandro Lleras, Professor of Psychology, Charles Eriksen Professorial Scholar

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Personal profile

Professional Information

Attention, Vision, Awareness

Professional Information

CAREER award recipient from National Science Foundation


Research Interests

My work is focused on understanding attention, both how it works and how it fails, mostly in the visual domain. I have studied issues such as temporal attention, why we tend to get distracted when we concentrate over long periods of time, how we tune out the world when we are trying to concentrate, and how it is that we find objects in a scene.

Education/Academic qualification

Ph.D., Pennsylvania State University

… → 2002

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Research Output 2001 2019

Distractor rejection in parallel search tasks takes time but does not benefit from context repetition*

Ng, G. J. P., Buetti, S., Dolcos, S., Dolcos, F. & Lleras, A., Sep 14 2019, In : Visual Cognition. 27, 5-8, p. 609-625 17 p.

Research output: Contribution to journalArticle

Reaction Time
Recognition (Psychology)
Rejection (Psychology)

Predicting Search Performance in Heterogeneous Scenes: Quantifying the Impact of Homogeneity Effects in Efficient Search

Lleras, A., Wang, Z., Madison, A. & Buetti, S., Jan 8 2019, In : Collabra: Psychology. 5, 1, p. 2

Research output: Contribution to journalArticle

Open Access

Fixed-target efficient search has logarithmic efficiency with and without eye movements

Ng, G. J. P., Lleras, A. & Buetti, S., Oct 1 2018, In : Attention, Perception, and Psychophysics. 80, 7, p. 1752-1762 11 p.

Research output: Contribution to journalArticle

Eye Movements
Reaction Time
Experimental Psychology
experimental psychology

Parallel, exhaustive processing underlies logarithmic search functions: Visual search with cortical magnification

Wang, Z., Lleras, A. & Buetti, S., Aug 1 2018, In : Psychonomic Bulletin and Review. 25, 4, p. 1343-1350 8 p.

Research output: Contribution to journalArticle

Reaction Time
Visual Search
Parallel Processing

The role of crowding in parallel search: Peripheral pooling is not responsible for logarithmic efficiency in parallel search

Madison, A., Lleras, A. & Buetti, S., Feb 1 2018, In : Attention, Perception, and Psychophysics. 80, 2, p. 352-373 22 p.

Research output: Contribution to journalArticle

Reaction Time