With a continued focus on growth and key leadership principles, HP has managed to dominate its market and see huge gains in engagement.

What causes groupthink? One major factor is the tendency people have in meetings to rush toward consensus, just so the meeting can end earlier.

Exhaustive lists of leadership principles burden the brain, making them hard to remember and nearly impossible to weave into the larger culture.

Groupthink is what happens when team members stop thinking independently, don't speak up, and race toward consensus. But leaders can still avoid it.

Whether someone speaks up at work or keeps quiet often comes down to their sense of social threat or reward, which leaders play a crucial role in creating.

A focus on growth mindset and building unity through conversations and bias mitigation have helped Nokia create lasting culture change.