In your opinion what causes christians to believe in Jesus

[Sheldon]

"While the Dunning-Kruger effect remains a popular concept, the debate about its true nature continues within psychology. Some researchers believe it reflects a real cognitive bias related to metacognition and self-awareness, while others view it as a statistical artefact shaped by the way data is analysed, according to Psychology Today."

Are you back to using your AI quotes?

The source is in the quote, though I can see why you'd like to quickly dismiss this with handwaving, given it challenges another handy factoid you seem to have made up on the spot. Would you like some more sources that suggest your rhetoric was hastily made up hubris? 

The British Psychology Society

You might want to read the whole article, but here is a snippet: 

"scholars cite statistical artefacts to argue that the Dunning-Kruger effect is not real. But they fail to notice that the pattern of self-misjudgements remains regardless of what may be producing it. Thus, the effect is still real; the quarrel is merely over what produces it."

Oh and lets refresh ourselves of your exact claim, as we know how fractious and mendacious you get, when some of your more comedic outbursts are challenged, wouldn't want you denying it later on. 

John 6IX Breezy

most people with a psychology degree know the dunning-kruger effect doesn't exist.

When will you be offering anything to support this beyond a bare claim, no need to answer, I think by now we all know the answer. One assumes you must have polled a substantial test group of that demographic, in order to make such a sweeping assertion, or else you'd look an utter fool...