Oddly Wired
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decision making

You are worse at predicting your own behavior.

The introspection illusion is the tendency to trust one's own introspections as a reliable source of information while failing to recognize that cognitive biases operate unconsciously.

It specifically explains why people view themselves as more objective than others, rather than why they ignore situational factors (which is the fundamental attribution error).

Your explanation for why you acted is often just a story.

Where this comes from

Study
Pronin, 2007, The Introspection Illusion
What the check found
The definition provided describes the fundamental attribution error. The introspection illusion specifically refers to the belief that one's own thoughts are an accurate window into one's lack of bias.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.