How often do predoctoral research positions convert into PhD programs (USA vs Europe) in STEM?
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I've noticed that a few seniors from my college joined predoctoral research positions in the US or Europe. Some of them eventually continued into a PhD at the same institution/lab, while others joined PhD programs elsewhere.
I'm curious about how this works in practice.
- How common is it for a predoctoral position to convert into a PhD in the same lab or university?
- Is there any rough conversion rate in the USA versus Europe, or does it vary too much to estimate?
- Is the conversion usually an expectation from the start, or is it highly competitive?
- For those who have gone through this route, do you think it was worth it compared with applying directly to PhD programs?