Mental Immunity

You have a second immune system that's all in your head. It influences who you're attracted to, how social you are, even your biases. Photo of disgusted girl via Shutterstock.

The Psychological Immune System

By Douglas T. Kenrick Ph.D.
Why seeing others sneeze makes you healthier.

Blogger Spotlight: The Cooties They Carry

By Rachel Herz Ph.D.
A primary purpose of disgust is to protect us from pathogens. But the system isn't without flaws. (Image of mold via Shutterstock)

Do Unconscious Fears of Infection Affect Your Social Life?

By Douglas T. Kenrick Ph.D.
The Behavioral Immune System IV

Smells Like Safe Sex

By Douglas T. Kenrick Ph.D.
Behavioral Immune System 3: Foul odors can trigger safe sex!

Has Resistance to Evolution Gone the Way of Disco Pants?

By Douglas T. Kenrick Ph.D.
Psychology reaches a new evolutionary level.

Why You May Be a Bigot

By Gregg R. Murray Ph.D.
The rationality of us v. them.

Mind Your Body: The Underrated Sense

By Jonah Comstock
In defense of smell: It's crucial to love, health, and survival.

Pardon Me If I Stare

By Christopher Peterson Ph.D.
That which is killing others makes us stronger.