Explain why the phenomenon of cognitive dissonance, as exemplified by the fable of sour grapes(Aesop), contradicts standard theory.

Explain the following example both in terms of anchoring effect and in terms of projection bias.
“Subjects tasted a spoonful of plain yogurt and immediately rated their experience. They were then asked to predict how they would rate the experience of consuming a full cup of the same yogurt….”,

2. Explain why the phenomenon of cognitive dissonance, as exemplified by the fable of sour grapes(Aesop), contradicts standard theory.