Hi
@Violet Jane
Sequential thinking used to be tested. Doesn't always help, and depends on the tester.
Some years ago, my OH's uncle was at early stages dementia. After a fall he was taken into hospital. Whilst there he was tested by the geropsychiatrist (psychiatrist for geriatrics).
Test was that she asked uncle to make a cup of tea. He put the kettle on. Then he got the teapot and put hot water in it. Then he got the cup, and then looked for the tea caddie and strainer, which he couldn't find as they used tea bags, whereas he always had had loose leaf tea. She, the geropsychiatrist, said he had lost it, putting water in the teapot without any tea! I was there during this. I explained that uncle got it all right and that he was used to putting hot water in the teapot without any tea, just to warm up the teapot first. She said she'd never heard of this. Obviously, a generational thing, lost over time, as most never use teapots these days, and just put a teabag in the mug and add hot water, which is what the geropsychiatrist had in her mind as a way of making tea.
She said uncle wasn't with it!
Back in the ward, uncle said she wasn't with it!