The William K. and Katherine W. Estes Fund invites proposals to fund advanced training opportunities in mathematical and computational modeling for psychological science in summer schools or focused workshops. A summer school would provide foundational training in mathematical or computational modeling to advanced trainees (PhD students and/or postdoctoral scholars), usually over a period from a few days up to two weeks. A successful summer school might be repeated. A workshop would be focused on a topic or method in an area of rapid recent progress and would serve trainees and also established researchers. Topics in which the Estes Fund Committee is particularly interested include cognitive architectures, Bayesian approaches to perception and concept formation, machine learning for psychological modeling, and applications of mathematical models to neuroscience. Typically a workshop would last one to two days, and might be held in conjunction with a larger meeting. Potential proposers are encouraged to contact members of the Estes Fund Committee during the initial proposal preparation process. Initial proposal deadline is the 1 st of September 2019.