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α: calibrated so average coauthorship-adjusted count equals average raw count
In tracking the later-generation descendants of immigrants, measurement biases can arise from "ethnic attrition" (e.g., US-born individuals who do not self-identify as Mexican despite having ancestors who immigrated from Mexico). We present evidence that such ethnic attrition is sizeable and selective for the third-generation populations of key Hispanic and Asian immigrant groups. In addition, our results suggest that ethnic attrition generates biases that vary across national origin groups in direction as well as magnitude, and that correcting for these biases will raise the socioeconomic standing of the US-born descendants of most Hispanic immigrants relative to their Asian counterparts.