Biology is nature's design, 'psychology' is a social and cultural design.
The way humans behave when in crisis (thought gets suspended during 'fight', 'flight' or 'freeze' moments) is biologically or genetically coded. Our primal behavior is influenced by the biological apparatus.
Scientists, Nobel awardees (the likes of Eric Kandel) tell us that there are serious, genuine limitations on what we can see, hear and sense, they point to 'how the senses distort reality'. They say senses capture only the 'shadow' of life but not life (Thought cannot capture or contain or give expression to life - UG)
Intellect is superficial, it plays an insignificant role in how the body really functions or operates.
The intellect or refined thought (the only instrument we have and there is no other instrument - UG) processes only 'the snapshot of reality', the mere shadow of the living, dynamic moment.
Thought, no doubt has changed the face of the planet with the advances in engineering and technology but has no way to solve the human problems of love, hatred, anger, greed, jealousy which have deep roots in genes or biology. There is nothing we can do. UG rightly recommends, 'stop thinking, start living!'.
Truly remarkable is the native intelligence of the body which is unparalleled (no technology or innovation can ever match it) that takes care of functioning and survival of the body under all circumstances.
This revelation is truly humbling!