Thread by @maartenpvink

New pre-print:

What’s the causal impact of #dualcitizenship acceptance on immigrant naturalisation?

Floris Peters (@MiLifeStatus) and I apply quasi-experimental design based on reforms in 🇳🇱 (1997) and 🇸🇪 (2001).

I think it’s pretty nifty 🤓

osf.io/skvfp

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Difference-in-differences design exploits exogenous variation in origin country #citizenship legislation to identify the treatment effect of destination country policy reform.

We draw on @macimide data on expatriate dual citizenship acceptance: doi.org/10.7910/DVN/TT…

We employ microlevel administrative data on complete migrant populations in the years around these reforms.

In 🇳🇱 dual citizenship was restricted in 1997, though with major exemptions (eg not if 🇳🇱 partner).

In 🇸🇪 dual citizenship was liberalised in 2001.

In line with parallel trend assumption, we observe:

marginal differences in naturalisation rates between the control and treatment group in the pre-treatment period

and

substantive decrease (🇳🇱) resp. increase (🇸🇪) after #dualcitizenship reform.

We find that effect of dual citizenship reform is concentrated among migrants from 🇪🇺 and highly developed countries and those who arrived recently.

Suggests that cost-benefit considerations condition the effect of destination country dual citizenship reform.

These results are in line with previous studies, but provide robust causal evidence and specify effect heterogeneity.

https://twitter.com/maartenpvink/status/1356931660340731904?s=20

Feedback & comments very welcome!

I’m happy to present our #dualcitizenship paper in your research seminar or #citizenship or #migration class.

Just drop me a line!

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