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Candidates stump for votes in New Hampshire campaigning

Candidates stump for votes in New Hampshire campaigning

Candidates stump for votes in New Hampshire campaigning

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3:25

How accurate were candidates at the New Hampshire debate?

How accurate were candidates at the New Hampshire debate?

How accurate were candidates at the New Hampshire debate?

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4:33

Testing an expanded childless tax bonus

Testing an expanded childless tax bonus

Testing an expanded childless tax bonus

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9:57

In Brazil, a race to solve the mysteries of Zika virus

In Brazil, a race to solve the mysteries of Zika virus

In Brazil, a race to solve the mysteries of Zika virus

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7:52

Clinton camp wrestles with gender and generational divides

Clinton camp wrestles with gender and generational divides

Clinton camp wrestles with gender and generational divides

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7:37

N.H. Democrats hear different visions for middle class

N.H. Democrats hear different visions for middle class

N.H. Democrats hear different visions for middle class

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6:03

How the Sanders and Kasich campaigns see the fight for N.H.

How the Sanders and Kasich campaigns see the fight for N.H.

How the Sanders and Kasich campaigns see the fight for N.H.

Video

9:05

Candidates offer final pitches before N.H. polls open

Candidates offer final pitches before N.H. polls open

Candidates offer final pitches before N.H. polls open

Video

4:22

Could a NATO build-up in Europe reignite the Cold War?

Could a NATO build-up in Europe reignite the Cold War?

Could a NATO build-up in Europe reignite the Cold War?

Video

7:47

Here's what's on the minds of New Hampshire voters

Here's what's on the minds of New Hampshire voters

Here's what's on the minds of New Hampshire voters

Video

2:30

GOP factions fight for N.H. voters and the future

GOP factions fight for N.H. voters and the future

GOP factions fight for N.H. voters and the future

Video

5:42

Why Detroit's teachers are 'sick' of inadequate schools

Why Detroit's teachers are 'sick' of inadequate schools

Why Detroit's teachers are 'sick' of inadequate schools

Video

8:32

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PBS News Hour

The hidden psychology behind sports teams and their fans

With the nation tuning in for Super Bowl 50 this Sunday, many sports fans have football on the brain, especially Sports Illustrated editor Jon Wertheim. He recently co-wrote the book “This is Your Brain on Sports,” a look at the psychology and behavior of sports teams and their fans. Hari Sreenivasan sits down with him to learn more about how athletes think.