What are the intrinsic reference levels in Perceptual Control Theory?

One question very present in my mind as I dive back into Perceptual Control Theory:  what are all the intrinsic reference levels? Classic: temperature, water, salt, hunger, sex Necessary: proteins, micronutrients, Speculative: meaning, belonging, dignity, beauty

Oct 29, 2021

(For people not familiar with "intrinsic reference levels", it's essentially referring to "fundamental preset variables the bodymind measures and will reorganize behavior as long as certain values aren't met") twitter.com/SimianSeminar/…

I'm particularly interested in intrinsic reference levels that humans or primates might have that other mammals wouldn't have. It does seem to me like there are likely at least a few of these, related to social organization and so on—the speculative ones above.

I even speculated in my notes recently that psychopathy might be due to a missing intrinsic reference level, which results in certain capacities (eg empathy) not being developed, instead of those capacities being missing directly. (Extremely speculative! I have no idea!)

Anyway, I'm interested in thoughts on intrinsic reference levels from my friends who've been getting into PCT recently (and less recently!) @selentelechia @m_ashcroft @AskYatharth @busy_goose @QiaochuYuan @magicianbrain @mattgoldenberg @orthonormalist

I'd also be curious to know what the latest/best PCT literature is on intrinsic reference levels! @IAPCT @EvadeHullu @warrenmansell

I guess people have tried to make a list of innate drives or needs or something... that might be one place to start for examples. Although I expect many of them would sort of be on the wrong level of abstraction/hierarchy.