Attached delivers a scientific explanation why some relationships thrive and steer a clear path over a lifetime, while others crash and burn, based on the human need for attachment and the three different forms it takes.

Romantic advice is full of pseudo-scientific ideas and personality tests purporting to determine compatibility.

But while it's not exact, we can use psychology to understand how we approach intimate relationships.

In this book, social psychologist Rachel Heller and Columbia University psychiatrist and neuroscientist Amir Levine explain the basics of attachment theory.

Attached investigates why we as humans have the desire to connect deeply with others, and how our early experiences shape the way we go about fulfilling this desire.