Hey guys! Idk if this will make sense but how can you differentiate between INFP and ISFJ? They seem similar, especially in theatre. Thanks!
Interestingly enough, INFPs and ISFJs have only have their functions in common! To be specific: INFPs are Fi, Ne, Si, Te; and ISFJs are Si, Fe, Ti, Ne. I’ll explain a bit.
The biggest difference in my opinion is between Fi (introverted feeling) and Fe (extroverted feeling). Essentially, the former is all about how I feel, and the latter is about how everyone else feels.
I just did a typing of Lydia from Beetlejuice as an INFP - she doesn’t want to fit into what others want for her, she wants authenticity to her own feelings. Compare that to the last ISFJ I typed, Velma from Octet, who is immensely worried about aligning to the feelings and perceptions of others. There’s also a greater tendency for ISFJs to openly express their emotions through Fe, whereas INFPs with Fi keep them in.
The other major difference comes in their shared functions, Si (introverted sensing) and Ne (extroverted intuition). Si is all about the past, about maintaining a certain amount of stasis and stability, and self-awareness of bodily condition. Ne is about all of the potential opportunities of the future, far more abstract.
Often you’ll see Ne manifest in ISFJ characters as worrying, because it’s their inferior function. But INFPs use it far more easily and healthily, focusing on the possibilities and opportunities in the world. Likewise, ISFJs use Si naturally and healthily, whereas INFPs are more prone to developing unhealthy grips on the past.
So, Lydia and Velma once again. Lydia takes on a number of plans and is excited by new opportunities in her life, however, due to grief is in a place that causes her to unhealthily cling onto the past. Velma shows a great amount of loyalty, with a focus on her body, and tends to worry worry worry when other ideas come into her life.
I would always look for Fi vs. Fe first if I’m trying to decide between if a character is INFP or ISFJ. Sometimes because of that inferior Ne manifesting in numerous “what if’s”, it can be hard to tell the difference at first.
I was going to link to a character dynamics post between Ismene (ISFJ) and Antigone (ENFP, but lots of overlap with INFP), but it turns out I never made it. Oops. Look for that in the future.