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Bryan Alexander

Self-presentation in interracial settings: The competence downshift by White liberals - PubMed

Archival and experimental research reveals a subtle but persistent ironic consequence: White liberals self-present less competence to minorities than to other Whites-that is, they patronize minorities stereotyped as lower status and less competent.

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Bryan Alexander

The Fiscal Ship: federal budget minigame

Web browser game letting players pick budget priorities.

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Bryan Alexander

Mini Simulations | CFR Education

Very short sims for current events and history.

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Bryan Alexander

Prospectively predicting 4-year college graduation from student applications

We leverage a unique national dataset of 41,359 college applications to prospectively predict 4-year bachelor's graduation in a generalizable manner. Our features include sociodemographics, institutional graduation rates, academic achievement, standardized test scores, engagement in extracurricular activities, work experiences, and ratings by teachers and high-school guidance counselors. A random forest classifier successfully predicted 4-year graduation for 71.4% of the students (base rate = 44%) using all 166 of the aforementioned features and a split-half validation method. A stochastic hill-climbing feature selection procedure effectively maintained the same classification accuracy, but with a minimal set of 37 features, consisting of an approximately equal representation of sociodemographics, cognitive, and noncognitive factors. We advocate against using these results for admissions decisions, instead contemplating how they might be used to provide parents and educators with actionable information to guide students towards college success.

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Bryan Alexander

AI tutoring outperforms in-class active learning: an RCT introducing a novel research-based design in an authentic educational setting | Scientific Reports

Here we report a randomized, controlled trial measuring college students’ learning and their perceptions when content is presented through an AI-powered tutor compared with an active learning class. The novel design of the custom AI tutor is informed by the same pedagogical best practices as employed in the in-class lessons. We find that students learn significantly more in less time when using the AI tutor, compared with the in-class active learning. They also feel more engaged and more motivated. These findings offer empirical evidence for the efficacy of a widely accessible AI-powered pedagogy in significantly enhancing learning outcomes, presenting a compelling case for its broad adoption in learning environments.

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Bryan Alexander

Does the news reflect what we die from? - Our World in Data

Heart disease and cancer accounted for 55% of deaths among these 15 causes, but together they received just 7% of the media coverage. Other chronic issues, such as strokes, respiratory problems, diabetes, and kidney and liver disease, were also very underrepresented in the news.

Rare — but dramatic — events such as homicides and terrorism received more than half of all media coverage, despite being much smaller causes of death in the US. Terrorism, in particular, is a very rare cause of death, with 16 deaths in 2023.

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Bryan Alexander

Bad News - Play the fake news game!

Simulates running a fake news enterprise.

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