Historical Reasoning (APUSH Edition)

11.08.25 12:36 PM - By Claire B.

Students often tell me that AP US History is "not like" other history classes.  When I ask them what they mean, it often boils down to this:


The AP US History course is not designed to encourage you to memorize facts for the sake of it.  It's also not designed to be a reading class in disguise.  Yes, you need to read and you need memorize facts.  But the point of the course is to teach you how to think like historians think.  In other words, the course helps do what historians.  That is, read and use their existing knowledge, to make sense of the past.


This "sense-making" includes linking people, places, events, and developments together.  The College Board refers to three of these methods as "historical reasoning."  There are three of them.  The first is continuity and change over time, which is also abbreviated as CCOT.  The second is comparison, which some teachers refer to as similarities and differences.  Others may use compare and contrast.  The third is causation.  This is also referred to as cause and effect.


The College Board wants you to master these three skills by the time you finish your AP US History course.  That means that they will ask you many questions are testing your ability to reason about history.  Multiple choice (MCQ), short answer (SAQ), Long Essay (LEQ), and Document-Based (DBQ) questions will all ask these types of questions.  So it's critical to master these skills.


Let's take a closer look!

Continuity and Change Over Time (CCOT) 

CCOT Definition

Continuity and change allows us to consider periods of time.  When we think about history in this way, we can see how the economy, or politics, or social relationships changed in a period of time.  History is also shaped by continuities.  These are things that stay the same during a period of time.  Continuities help give periods of history a distinct character.  There are things we expect in certain time periods that we don't expect in other time periods.


It's the pattern that tells us something interesting about a given period of history.  This is like when your English teacher keeps pointing out all the symbols in a book.  The whale in Moby Dick keeps showing up.  The blood in Macbeth keeps showing up.  The green light in The Great Gatsby keeps showing up.  A green light by itself doesn't mean anything.  But when it keeps showing up, or changes suddenly, that's meaningful. 

CCOT Examples

History doesn't have an author.  But it does have patterns.  In AP US History, these patterns often deal with specific themes.  This includes political developments, economic changes, social relationships (especially gender and race), American culture, and the impact of new technology.  (If you're a little fuzzy on the AP US History themes, check out this article.)  Aspects of these themes reappear in different time periods in new and different ways.  That's continuity and change. 

Comparison (Similarity and Difference) 

Comparison Definition

Comparison allows us to examine how two things are alike or different.  When we think about history in this way, we can see how geographic regions or social groups relate to each other.  Comparison also allows us to understand how historians reach different conclusions about the past.  This too changes over time.

Again, by stepping back we can see the pattern.  The pattern reveals meaning in an otherwise tangled mess of information.  This is similar to thinking about two characters in a book.  One of them may be bold, loud, and confident.  The other one is quiet and risk-averse.  It's likely those traits influence what happens in the story.  But we might not appreciate which doors open, and which don't, if we didn't consider the difference between the two people.  

Comparison Examples

In AP US History, you'll run into causation in a few different places.  First, you'll repeatedly be asked to compare political parties.  For example, understanding the differences between the Federalists and Democratic Republicans is a classic question.  Second, you'll be asked to compare geographic regions.  For example, the economic and social differences between the North and the South.  Third, social groups are commonly compared in AP US History questions.  For example, you might look at how the lives of upper class women were different than lower class women during the Industrial Revolution. 

Causation (Cause and Effect) 

Causation Definition

Causation allows us to connect separate events together by creating a chain of events.  When we think about history in this way, it allows us to see how Event A led to Outcome B.  In turn, Outcome B leads to Result C (and so on).  Information is important if it helps you create these strings of events. 


Think of this like chapters in a book.  Each chapter only gives part of the story.  If you read the sixth chapter in a random book, it would be hard to understand what the characters were doing.  If you read all the chapters in order, then the story should make more sense.  You could probably recount the story to another person in a way they could understand.  Even if you missed some important moments in the book, they could get the gist.  

Causation Examples

We're interested in the whole story, so it's not the individual events that matter.  It's the sequence of events and what they tell us about history.  The date the Stamp Act was passed is trivia.  This is where the gold is: The Stamp Act helped cause the American Revolution because it fanned the flames of a debate about political rights.  We've linked two events together in time, and thus created a pattern.


You'll typically run into causation in two places.  First, you'll want to understand the causes of major wars in US History.  Second, you want to know the effects of major events.  This includes wars, certainly, but it also includes other points in history where things changed in a significant way.  For example, it's important to understand the effects of the Industrial Revolution.  This is not a war, but it is a thing that happened in history that had lasting consequences.

I help AP US History students master their coursework and the exams.  Learn more here.

You may also like these AP US History articles!

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