Bipolar Disorders in AP Psychology

In AP Psychology, bipolar disorders are a category of psychological disorders marked by periods of mania and periods of depression that alternate over varying lengths of time. Bipolar I and Bipolar II are the disorders in scope, and their causes can be biological, genetic, social, cultural, behavioral, or cognitive.

What are Bipolar Disorders?

Bipolar disorders are a category of psychological disorders defined by big swings in mood, energy, and the ability to function. Under CED topic 5.4, they're characterized by periods of mania and periods of depression. Mania is the "up" pole. It brings an elevated or euphoric mood, racing thoughts, high energy, and less need for sleep. Depression is the "down" pole, with sad or empty mood and low energy, sometimes including suicidal thoughts. These distinct stretches of extreme mood are called mood episodes.

The CED also names bipolar cycling, which is the alternation between depressive and manic periods. Those periods can last different amounts of time from person to person. Two disorders are in scope for AP. Bipolar I disorder involves full manic episodes. Bipolar II disorder pairs depressive episodes with milder "hypomanic" highs. As with depressive disorders, the possible causes fall into biological, genetic, social, cultural, behavioral, or cognitive sources. A simple way to remember it is that bipolar disorders are depression with an extra pole attached.

Why Bipolar Disorders matter in AP® Psychology

Bipolar disorders live in Unit 5: Mental and Physical Health, under Topic 5.4 Selection of Categories of Psychological Disorders. They directly support learning objective AP Psych 5.4.D: "Describe the symptoms and possible causes of selected bipolar disorders." They also sit right next to AP Psych 5.4.C (depressive disorders), because the depressive pole of bipolar looks a lot like major depressive disorder. The exam often makes you tell the two apart. The "possible causes" list (biological, genetic, social, cultural, behavioral, cognitive) is the same multi-perspective approach that runs through all of Unit 5. That's why bipolar disorders make a good test case for applying several explanations to a single disorder.

How Bipolar Disorders connect across the course

Bipolar I and Bipolar II Disorder (Unit 5)

These are the two specific disorders the CED puts in scope under the bipolar umbrella. The difference comes down to how high the highs go. Bipolar I has full mania. Bipolar II has hypomania, which is a milder high, plus major depressive episodes.

Major Depressive Disorder (Unit 5)

The depressive episodes in bipolar disorder can look exactly like major depressive disorder. What sets bipolar apart is the manic or hypomanic pole. If a scenario describes only lows, think depressive disorder. If it also describes highs, think bipolar.

Heredity and Twin Studies (Unit 1)

Bipolar disorders are a classic example of the twin-study logic from biological bases of behavior. Identical (monozygotic) twins share bipolar diagnoses more often than fraternal (dizygotic) twins do. That pattern is evidence for a genetic contribution.

Neurotransmitters and Biological Explanations (Units 1 and 5)

The "biological" cause in 5.4.D ties back to how brain chemistry shapes mood. When a question asks you to explain extreme swings from euphoria to despair, a neurobiological answer points to dysregulated brain chemistry, not just stress or learned behavior.

Are Bipolar Disorders on the AP® Psychology exam?

Expect bipolar disorders mostly in multiple-choice scenarios where you have to identify the disorder from a description. A typical stem describes someone who "alternates between periods of extreme euphoria with racing thoughts and periods of deep depression with suicidal ideation," then asks which explanation best accounts for it. Questions also test the evidence behind the causes. For example, you might be asked what twin research shows (higher concordance in monozygotic than dizygotic twins). Some questions test vocabulary that comes with cycling. Rapid cycling means four or more mood episodes in 12 months. Mixed features means manic and depressive symptoms happen at the same time instead of alternating. No released FRQ has used the term verbatim. Still, it fits the kind of FRQ prompt that asks you to apply a psychological perspective (biological, cognitive, sociocultural) to explain a disorder in a scenario. Your job is to (1) spot the mania plus depression pattern, (2) separate Bipolar I from Bipolar II, and (3) connect a specific cause to the symptoms.

Bipolar Disorders vs Major Depressive Disorder

Both include depressive episodes, so they're easy to mix up. Major depressive disorder involves only the low pole: sad, empty, or irritable mood with physical and cognitive changes. Bipolar disorders add periods of mania or hypomania. The quick test is to check for a high. If the person also has stretches of elevated mood, racing thoughts, and high energy, it's bipolar.

Key things to remember about Bipolar Disorders

• Bipolar disorders are defined by periods of mania and periods of depression, which is what separates them from depressive disorders.

• Bipolar cycling means alternating between depressive and manic periods, and those periods can last different amounts of time.

• The two bipolar disorders in scope for AP Psychology are Bipolar I disorder and Bipolar II disorder.

• Bipolar I involves full manic episodes, while Bipolar II involves milder hypomanic episodes along with depressive episodes.

• Identical twins share bipolar diagnoses more often than fraternal twins, which supports a genetic contribution.

• The CED lists the possible causes of bipolar disorders as biological, genetic, social, cultural, behavioral, or cognitive.

Frequently asked questions about Bipolar Disorders

What are bipolar disorders in AP Psychology?

Bipolar disorders are a category of psychological disorders marked by alternating periods of mania and depression, covered under learning objective AP Psych 5.4.D in Unit 5. Bipolar I and Bipolar II are the disorders in scope for the exam.

Does bipolar disorder mean someone's mood changes many times a day?

No. Bipolar disorders involve distinct mood episodes that last a period of time, not ordinary moment-to-moment mood changes. Even rapid cycling, the fastest pattern, is defined as four or more mood episodes within a 12-month period.

What is the difference between Bipolar I and Bipolar II?

Bipolar I involves at least one full manic episode with extreme euphoria, racing thoughts, and high energy. Bipolar II involves hypomania, a milder high, combined with major depressive episodes. The difference is how intense the highs are.

How is bipolar disorder different from major depressive disorder?

Major depressive disorder has only the depressive pole. Bipolar disorders have depression plus mania or hypomania. If an exam scenario mentions periods of elevated mood or racing thoughts, you're looking at bipolar.

Is bipolar disorder genetic?

Genetics is one cause, but not the only one. Twin studies consistently show higher concordance in monozygotic (identical) twins than in dizygotic (fraternal) twins, which points to heritability. The CED also lists biological, social, cultural, behavioral, and cognitive sources as possible causes.