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Timothy Brady

@timbrady.bsky.social
1.7K followers 309 following 19 posts

I'm a cognitive scientist and Professor of Psychology at UC San Diego. My lab studies visual cognition and memory. Website: bradylab.ucsd.edu

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Timothy Brady @timbrady.bsky.social · 13/11/2024
We focus on prediction, not fitting: we make a priori predictions from independent data, and focus on across-task generalization, rather than just fitting a model to a dataset. We think it's a nice new model/approach that has something useful to add, and hope meta-cognition researchers agree.
Model summary from the paper, showing that because oblique orientations have a more spread out similarity function, they end up with worse errors but higher confidence than cardinal orientations in the model and the data.
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Timothy Brady @timbrady.bsky.social · 13/11/2024
We argue that if you use a model of memory representations, you can just directly read out the strength of this representation (how strong the memory match signal is for a target item) and predict how confidence relates to entire error distributions as well as novel confidence-accuracy dissociations
Graphs from the paper, showing predicted memory errors at each confidence level (predicted from another task) map onto the actual data for each confidence level.
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Timothy Brady @timbrady.bsky.social · 13/11/2024
New preprint where @mmrobinson93.bsky.social and I jump into the literature on meta-cognition (hopefully in a useful way!): osf.io/preprints/os... We show that a simple memory model (TCC) can be straightforwardly adapted to make predictions about confidence #neuroscience #psychscisky
Figure showing a key manipulation in the paper. A set of images or colors are remembered, and then the memory test pits an item you saw vs one that is similar to the tested item or another remembered item.
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Timothy Brady @timbrady.bsky.social · 09/11/2024
Door with no hinges. And a kiwi bird. Because Sam.
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Timothy Brady @timbrady.bsky.social · 03/10/2024
Excited to start building all the cool demos in @bjbalas.bsky.social’s book!
A red book, titled practical vision science.
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