Deceit -

The deep-seated need to belong often leads people to mirror others’ interests or inflate their own successes.

Using "prosocial" lies to maintain harmony and social bonds. The Psychology: Why We Do It deceit

Exaggerating achievements to gain group approval. The deep-seated need to belong often leads people

For humans, researchers suggest that as our social networks became more complex, so did our need to manage how others perceived us. Deceit allowed early humans to: Keeping food or mate locations secret. deceit