Key Takeaways
- Since 2027 there's no prompt choice -- one LEQ prompt tests one of three reasoning skills, and you find out which only on exam day.
- Causation asks why something happened or what it caused; comparison asks how two things were alike or different; CCOT asks what changed and what stayed the same.
- The same content knowledge often works for all three -- what changes is how you frame and structure the argument.
Why This Matters Now
You Can No Longer Dodge a Weak Reasoning Type
Older versions of the LEQ gave you three prompts to choose from, each covering a different time period but often testing the same reasoning skill, or let you pick whichever skill you found easiest. Starting with the May 2027 exam, per the LEQ Rubric, that choice is gone. You receive one single prompt, and it can test causation, comparison, or continuity and change over time (CCOT) -- with no way to know which until you see it.
That means having one strong reasoning type and hoping for the best is no longer a viable strategy. See the 2027 DBQ & LEQ predictions for more on the broader format changes. Below is exactly what each type actually asks you to do, with a full worked example for each.
Reasoning Type 1
Causation
Asks why something happened, or what effects it had. Look for prompt verbs like "evaluate the extent to which," "analyze the causes of," or "assess the reasons for."
Sample Prompt
"Evaluate the extent to which economic factors caused the onset of the Great Depression."
Sample Thesis
"While overproduction and speculative stock buying on margin were significant triggers, structural weaknesses in the banking system and uneven income distribution throughout the 1920s made a severe economic collapse largely inevitable, regardless of the specific event that triggered it."
Notice the thesis doesn't just list causes -- it makes a claim about which mattered most ("largely inevitable regardless of the specific trigger"), which is what earns the complexity point on a causation essay. Each body paragraph should then explain how a specific cause led to the outcome, not just state that it existed.
Reasoning Type 2
Comparison
Asks how two developments, groups, or policies were similar and/or different. Look for prompt verbs like "compare the ways in which" or "evaluate the similarities and differences between."
Sample Prompt
"Compare the goals and methods of the Populist movement of the 1890s with the Progressive movement of the early 1900s."
Sample Thesis
"Although both movements sought to curb the power of concentrated wealth, the Populists organized primarily as a rural, agrarian third party demanding structural monetary reform, while the Progressives worked mainly within existing parties and relied on urban, middle-class-driven regulatory reform rather than a fundamental restructuring of the political system."
The most common way students lose points here is writing two separate paragraphs -- one about each movement -- without ever directly comparing them. Every paragraph should explicitly connect back to the other side ("unlike the Populists, Progressives...") rather than describing each group in isolation.
Reasoning Type 3
Continuity and Change Over Time (CCOT)
Asks what changed and what stayed the same across a given time span. Look for prompt verbs like "evaluate the extent of change and continuity" or "analyze the degree to which X changed."
Sample Prompt
"Evaluate the extent to which women's roles in American society changed in the period from 1900 to 1960."
Sample Thesis
"While women gained significant new legal and economic ground -- winning suffrage in 1920 and entering the workforce in large numbers during World War II -- deeply rooted cultural expectations that women's primary role was domestic proved far more resistant to change, resurfacing strongly in the postwar period through the 1950s."
The single biggest mistake on CCOT essays is writing only about change and ignoring continuity entirely (or vice versa). This thesis explicitly names both -- real legal/economic change alongside a persistent cultural continuity -- which is exactly what the rubric's complexity point rewards here.
Frequently Asked Questions
Can I still choose my LEQ prompt type?
No. Starting with the May 2027 exam, the College Board removed prompt choice -- you receive one single LEQ prompt, and it can test causation, comparison, or continuity and change over time. You won't know which until you see it, so all three need to be exam-ready.
Which LEQ reasoning type is hardest?
Most students find continuity and change over time (CCOT) hardest, because it requires discussing both what changed and what stayed the same, and students often default to only writing about change. Comparison is usually easiest to outline but hardest to avoid simply listing facts about each side without directly comparing them.
How do I know which reasoning type my LEQ prompt is testing?
The prompt's verb is the signal. "Evaluate the extent to which X caused Y" or "analyze the causes of" signals causation. "Compare the ways in which" or "evaluate similarities and differences between" signals comparison. "Evaluate the extent of change and continuity" signals CCOT. The introductory statement above the prompt often reinforces this too.
Do I need different evidence for each LEQ reasoning type?
Often the same underlying content knowledge works for multiple types -- the difference is how you frame it. The same facts about the New Deal could support a causation essay (why it happened), a comparison essay (how it differed from prior federal responses), or a CCOT essay (what changed and stayed the same in the government's role). The reasoning structure, not the facts, is what changes.
A Note on This Page
The worked examples illustrate the technique but are not reproductions of any specific released exam question. Always practice with official released materials, available via AP Central.
About the Author
This page and the APUSH score calculator are created and maintained by Rohit Chauhan, focused on turning complex AP scoring rules into clear, practical strategies for students.
Last updated: September 2026 • Have suggestions or corrections? Visit our Contact Us page.