Paris is in lockdown tonight after a series of bombings and gun attacks that killed more

than 100 people at six separate scenes.

We're learning more at this hour about a mass shooting in San Bernardino, California,

about an hour east of Los Angeles.

We have two sub-base, both dress and black.

It is clear that the two of them had gone down the dark path of radicalization, embracing

a perverted interpretation of Islam that calls for war against America and the West.

It's stockpiled assault weapons, ammunition and pipe bombs.

So this was an act of terrorism designed to kill innocent people.

Every time there's a terrorist attack, we ask ourselves, what motivates people to do this?

The attacks seem barbaric, nihilistic.

But is it that simple?

Is that what's really going on?

On this week's podcast, we explore the psychology of international terrorist organizations and

why so many young people join them.

Battlefield experiments conducted with fighters for ISIS and al-Qaeda reveal patterns in the

mental makeup of terrorists.

We'll use the lens of anthropologist Scott Atron to explore the strange hold these organizations

have on young minds.

Once you lock into these values, they're immune to social pressures, they're not norms.

That is, even if your best friends, your family, your loved ones are against you, you will

not see an exit strategy.

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