Ch 4: Psychology, Physiology & Genetics

About This Chapter

What roles do physiology and genetics play in psychology? Use this brief chapter to learn new facts or reinforce what you might already know about this topic. You can quickly boost your psychology class studies or prepare for various types of exams.

Psychology, Physiology and Genetics - Chapter Summary

Is there a genetic component to intelligence and personality? Is there a genetic influence on psychological disorders? You can expect to learn more about these types of issues when you refer to this detailed chapter. You'll also find lessons devoted to physiological psychology. After you complete your study of this chapter, you should be able to:

  • Define and list the principles of physiological psychology
  • Discuss physiological causes of mental illnesses
  • Describe the interaction between genetics and the environment in relation to human development
  • Explain the influence of genes on intellect
  • Relate how DNA has an influence on one's temperament
  • Talk about the impact of genetics on psychological disorders

This chapter offers a quick and effective way to expand your knowledge of these topics through 5-10 minute video lessons that you can access at all times, from any device. You also have the option to print lesson transcripts to create quick-reference materials. Use self-assessment quizzes and a chapter exam to determine whether you fully understand all topics or to identify which areas you need to further review.

6 Lessons in Chapter 4: Psychology, Physiology & Genetics
Test your knowledge with a 30-question chapter practice test
Physiological Psychology: Definition & Principles

1. Physiological Psychology: Definition & Principles

There are many ways to study human behavior, and one very practical one is to watch the ways that physiological events affect behavior. In this lesson, we'll define and explore aspects of physiological psychology.

Physiological Causes & Explanations for Mental Illness

2. Physiological Causes & Explanations for Mental Illness

There are many factors that can affect a person's mental health, including physiological issues. In this lesson, we'll look at three major physical causes of psychological problems: infection, malnutrition, and metal poisoning.

How Genetics and the Environment Interact in Human Development

3. How Genetics and the Environment Interact in Human Development

Everyone is different. But what makes a person unique? In this lesson, we'll examine the way genes and the environment affect who a person is, including looking at the nature vs. nurture debate and looking at how nature and nurture influence one another.

Is Intelligence Genetic? - Genes' Influence on Intellectual Abilities

4. Is Intelligence Genetic? - Genes' Influence on Intellectual Abilities

What is the role of heritability in determining our intellectual abilities? Is intelligence genetic? Explore what part our genes play and find answers to these questions in the following lesson.

Is Personality Genetic? - DNA's Influence on Temperament

5. Is Personality Genetic? - DNA's Influence on Temperament

How do genetics impact a person's temperament and personality? This lesson will introduce the world of behavioral genetics and help you understand the role our genes play in determining who we are and how we act.

Genetic Influence on Psychological Disorders

6. Genetic Influence on Psychological Disorders

Do genetics play a role in psychological disorders such as schizophrenia? What do we know about any genetic links? Does environment matter? Find the answers to these questions and more in this video lesson.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.