I'm pretty good at spelling, but i can't spell things aloud easily or anything.
My INTJ friend is bad at spelling, but utilizes spell-check.
The two ESTJs i've known can't spell for their lives. The weird thing about them is that you could correct them a thousand times over and they still wouldn't change how they misspell a word.
If it's in any way related to type, it would likely be the person of that type's focus. Example might be- I've learned how to spell properly because i want to be taken seriously when i make points. I also write poetry/am writing a novel. It's important for these things and not being looked over unless the basis isn't liked. Those ESTJs don't seem to care who takes them seriously because they take themselves seriously. They don't write and are just hellbent on working and obtaining material goals, as opposed to making points.
But... that's just a rough, far-reaching idea
Hang on traveling woman - Don't sacrifice your plan
Cause it will come back to you - Before you lose it on the man
I'm an INTP English major, so my spellign is bound to be verry good.
Although I have habits of making grammar errors, occasionally. I tend to write as I think, which sometimes leads to me change tense in mid-sentence. Weird.
The ISTP is terrible. At least she writes in full, but still. I don't point them out, to be polite, and then she has the nerve to correct my spelling. When I've spelt it correctly. :| She's the one who spelt the word wrong in the first place. Bawwr.
I can't resist making intentional SPAG (spelling, punctuation and grammar) errors in the vicinity of someone who calls themself a "grammar nazi". Just because I think those sort of people need to get a hobby.
I may make a lot of typos, but I think I spell well in general. I won spelling bees as a kid and was given other work to do in HS English instead of taking the grammar/spelling tests . Reading a lot and very much relying on writing for your expression tends to give you a good vocabulary also.
As for grammar, if I concentrate on it, then I have great grammar; but in casual exchanges, I am not obsessed with it. I try to keep an intelligent level of grammar without being uptight. I also enjoy "creative structuring" with sentences and paragraphs, which is a trend I see in INFPs. We just love those semicolons .
The edit button is important because I am not detail-oriented, and so I miss typos easily; plus, I tend to re-order thoughtss and so words mistakenly get cut out. I notice it later and then try and fix it because I can be a bit of a perfectionist.
"Charlotte sometimes dreams a wall around herself. But it's always with love - So much love it looks like everything else. Charlotte Sometimes - So far away, glass sealed and pretty." - The Cure
I hardly know any english grammar, since this is not my language, I did learn some at school, I suspect, when I paid attention.
But generally I go by sounds and rhythm of the words. Just what seems like it fits. Almost like a puzzle. And the finished sentence has a melody to it. Sometimes I can hear that it is all wrong. And I may experiment a little until it sounds right. If it's obviously all wrong.
So I dont think in rules and grammar. But by subconscious memory(guess..)(there may be some grammar, but if so, I'm not very aware of this..). There is not much thinking involved, mostly feeling.
I know an INFJ that is highly anal about spelling, although not so much grammar. I believe the reason I started to check my text for spelling was because of another INFJ I knew that would rant and rant about how I replied quickly at the cost of not fixing typos. Highly pedantic.
As some people here may have picked up, I very much prefer to intentionally misspell things to give a slightly flavor to the text. (as with purposeful omission of commas) It's mostly in the use of compounds that don't exist in formal English. I've always been of the opinion that it's the ideas behind words that are essential, not the words themselves. Don't spend too much money on the packaging. It's much more fun to break the rules to make a point.
I've been teased by family that I had a hobby for spelling words when I was younger. I'm not sure why nor do I care to find out.
Spelling matters in coding, mathematics, and some scientific notations. English was originally born as a language without formal spelling rules. If I desired a rigid means of expression, I'd either become a poet or speak through pure logic.
PS: To answer the OP, I have great disdain for those with a high regard for spelling and would consequently be biased to answer the question with the type of someone I'm not fond of, thus skewing the results.
If a deaf INFP falls in the forest and no one is around to hear it, does it make a sound?