Q: Can a supervisor be the examiner for a doctoral thesis?

Detailed Question -

Is it acceptable for the supervisor to be one of the examiners for doctoral thesis? Usually the examiners have a right to vote to make the final judgment, but could a supervisor be given such a right too? If there are countries which adopt such a system, can you please mention some?

1 Answer to this question
Answer:

In most countries, the PhD supervisor is one of the examiners of their student’s doctoral thesis. They are equally responsible for evaluating the thesis and providing a judgement. In many countries, doctoral theses need to be reviewed by additional examiners that might be native or foreign. The thesis examination is also usually followed by a PhD viva or defense presentation. PhD supervisors commonly serve as examiners for this as well.

This practice is followed in most countries for doctoral theses evaluations.

Related reading:

Should my professor be the first author of my research?