Understanding Frontal Lobe in AP Psychology

Deborah C. Escalante

Understanding Frontal Lobe in AP Psychology
Understanding Frontal Lobe in AP Psychology

If you’re studying psychology, you’ve probably heard of the frontal lobe. It’s the part of the brain that gets the most attention from psychologists. But what exactly is the frontal lobe?

What is the Frontal Lobe?

The frontal lobe is the largest lobe in the brain, located in the front part of the cerebral cortex. It’s responsible for many different functions, including:

  • Movement
  • Decision making
  • Problem solving
  • Planning
  • Personality
  • Social behavior
  • Attention
  • Working memory

Brain Structure

The frontal lobe is divided into three main regions: the prefrontal cortex, the motor cortex, and the premotor cortex. Each of these regions has its own unique functions and characteristics.

The prefrontal cortex is responsible for planning, decision making, and social behavior. The motor cortex controls movement, while the premotor cortex is involved in planning and preparing movement.

Frontal Lobe Development

The frontal lobe is not fully developed until a person is in their mid-to-late twenties. This may explain some of the risky behavior seen in adolescents, as they do not yet have the decision-making capabilities of a fully developed frontal lobe.

Frontal Lobe Damage

Damage to the frontal lobe can lead to a variety of problems. Some potential symptoms of frontal lobe damage include:

  • Impaired decision-making ability
  • Lack of motivation
  • Difficulty with planning and problem solving
  • Difficulty with social behavior and personality
  • Impaired working memory
  • Inability to control impulses


If you or someone you know has frontal lobe damage, treatment may involve rehabilitation and therapy to help manage symptoms and improve functioning. Medications may also be prescribed, depending on the individual’s needs.

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Frontal Lobe Research

Scientists are constantly learning more about the frontal lobe and its functions. Recent research has focused on the role of the prefrontal cortex in decision making and social behavior.


The frontal lobe plays a critical role in many different functions and behaviors. Understanding how it works, and what happens when it’s damaged, can help us better diagnose and treat a wide range of mental health and neurological disorders.

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