Story perspectives

Researchers' Bias Skews Immigration Data Analysis Results

1/23/2026

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Summary

Story summary

A study by George J. Borjas and Nate Breznau shows researchers' political views can influence data analysis outcomes.
An analysis included 158 researchers from 71 teams that examined immigration and social welfare data.
Results varied: teams advocating pro-immigration policies often found positive effects, while those favoring tougher laws reported negative impacts.
The study identified five design decisions explaining 68% of the differences; the authors stress robustness checks and note limitations.

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Story summary

A study by George J. Borjas and Nate Breznau shows researchers' political views can influence data analysis outcomes.
An analysis included 158 researchers from 71 teams that examined immigration and social welfare data.
Results varied: teams advocating pro-immigration policies often found positive effects, while those favoring tougher laws reported negative impacts.
The study identified five design decisions explaining 68% of the differences; the authors stress robustness checks and note limitations.