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“If a friend of mine gave a feast, and did not invite me to it, I should not mind a bit. but if a friend of mine had a sorrow and refused to allow me to share it, I should feel it most bitterly. If he shut the doors of the house of mourning against me, I would move back again and again and beg to be admitted so that I might share in what I was entitled to share. If he thought me unworthy, unfit to weep with him, I should feel it as the most poignant humiliation.”

For anyone wondering, the PhD student's name is Myra Cheng.

Across three preregistered studies, participants interacting with sycophantic AI became more convinced of their own rightness and less willing to repair relationships. Yet at the same time, participants rated sycophantic AI models as higher quality, more trustworthy, and more desirable for future use, which may explain why this behavior has persisted despite its harmful impacts.