Ask HN: How do you remotely monitor cognitive performance in the eldery?

I have one surviving parent who appears mostly fine but their personality makes informal observation during conversations difficult. Obviously extreme cognitive decline would be apaprent but I am looking for early warning signs. I am very far away and rarely get to visit in person.

I recently searched for "tools" for monitoring this on an ongoing basis but was surprised how grifty and broken the bulk of it was. I think these tests are informally called:

* Adaptive cognitive tests * Repeatable neuropsychological tests * Cognitive monitoring tools

Ideally one could have a friend of the parent help with the test, but if that is not possible it becomes essential that there is no complicated sign-up, click here, click that complexity that will trigger the elderly person into resisting and giving up.

Thanks for any advice.