Yada yada here's the open-access paper.
(I usually provide these links neutrally, but I'll make a point here: in a public health community, it may be worth requiring linking to a paper on top of the news article covering it – especially if it's open-access. Ars here is mercifully concerned with methodology; many outlets don't give a shit.)
Conclusion is as follows (for expedience; I encourage reading other parts):
As AI becomes ubiquitous in society, understanding how it reshapes human thought is essential. Tri-System Theory [author's note: introduced in this paper; tenuous to call it a "theory" on that basis] offers a new framework for this cognitive frontier. By introducing System 3 (Artificial) as a distinct and external reasoning process, we move beyond the classical architecture of dual-process theories and chart a new decision-making paradigm: one where intuition, deliberation, and artificial cognition coexist, compete, or converge. We show that people not only use System 3 to assist with reasoning, but often surrender to its outputs whether correct or flawed. This cognitive surrender illustrates the value and integration of System 3, but also highlights the vulnerability of System 3 usage. Similar to how System 1-driven heuristics lead to systematic biases, System 3 has differential cognitive shortcomings that will challenge decision-makers and society at large.
Tri-System Theory is not a warning about AI’s dangers but a recognition of System 3’s psychological presence. We do not merely use AI; we think with it. [author's note] In doing so, we must ask new questions: What happens when our judgments are shaped by minds not our own? What becomes of intuition and effort when a generative, artificial partner stands ready to answer? How do we preserve agency, reflection, and autonomy in a world where users engage in cognitive surrender? We offer Tri-System Theory as a conceptual foundation for understanding these challenges. It is a theory for an age of human-AI algorithmic cognition, and for the decision-makers, researchers, and designers shaping that future