As we go through life, we’re constantly trying to figure out what other people are thinking and feeling. Psychologist Liane Young says this ability to assess other people’s thoughts ​is an extraordinary feat of cognition. This week, in a favorite episode from our archives, we explore this mental superpower — and how it can lead us astray.

In our conversation with Liane Young, we explore:

*The uniquely human ability to think about the minds of other people, which scientists refer to as "theory of mind."

*How and when young children develop this ability to intuit what's happening in other people's minds.

*Why our understanding of other people's minds affects our moral judgments — and how those judgments can be disabled.

*How misreading another person's intentions can affect our lives in both small and significant ways.

Then, in the second part of this week's show, we welcome back researcher Fred Luskin, who responds to listeners' questions about grudges. If you missed the original conversation with Fred Luskin, listen to our episode No Hard Feelings.

As you go about your day, you likely interact with family, friends and coworkers. These relationships can help you feel cared for and connected. But what if there’s a whole category of people in your life whose impact is overlooked? Today, in a favorite episode from our archives, psychologist Gillian Sandstrom reveals some simple ways to make your life a little more joyful and maybe even a little less lonely. Then, we talk with researcher Erica Bailey, who responds to listeners' questions about authenticity and how to reveal our true selves to the people around us.

In this episode you'll learn:

• The sociological concept of "weak" and "strong" ties, and the important roles they play in our lives.
• How "weak ties" contribute to our happiness.
• How to talk to strangers — including how to start, maintain, and end a conversation.
• How to decrease feelings of loneliness and increase feelings of connectivity in your daily life.

If you enjoyed today's conversation with Gillian Sandstrom, be sure to check out these other Hidden Brain episodes:

You 2.0: The Gift of Other People

How Others See You

When we head into a negotiation — whether we're asking for a raise or trying to get our spouse to do the dishes — our focus is usually on getting the other person to agree to our preferred outcome. What we don't focus on are our own biases and blind spots. Behavioral scientist Max Bazerman studies the theory and practice of negotiation, and he says that paying attention to these biases can help us to craft better deals.

Do you have a follow-up question after listening to this episode? If you'd be comfortable sharing your question with the Hidden Brain audience, please record a voice memo on your phone. Email it to us at ideas@hiddenbrain.org. Use the subject line “negotiation.” Thanks!