Motivation

What Is Motivation?

Instinct Theory

Drive-Reduction Theory

Arousal Theory

Needs and More Needs: Maslow’s Hierarchy

Back to Basics: Hunger

Hungry Brain, Hungry Body

Let’s Have a Meal: Cultural and Social Context

Obesity

Eating Disorders

Sexual Motivation

The Birds and the Bees

Sexual Orientation

How Sexual Orientation Develops

The Sex We Have

Sexual Dysfunction

Sexually Transmitted Infections

Emotion

What Is Emotion?

Emotion and Physiology

Cognition and Emotion

It’s Written All over Your Face

Types of Emotions

The Biology of Fear

Happiness

Gender and Emotions