Analyze how an author draws on and transforms source material in a

Historical Context & Motivation

For as long as humans have told stories, writers have been borrowing from one another. The practice of drawing on source material — retelling, adapting, and transforming earlier texts — is one of the oldest traditions in literature. Ancient Greek playwrights reworked myths that their audiences already knew by heart, and Shakespeare built nearly all of his plays on plots he found in histories, novellas, and earlier dramas. Understanding this tradition helps us see that originality in literature is rarely about inventing something from nothing; it is about reimagining familiar material to speak to new audiences and new times.

In academic terms, a source text (also called a precursor text or intertext) is any earlier work — a myth, legend, religious scripture, historical account, or previous literary text — that a later author consciously uses as raw material. The later author may preserve major plot points but change the setting, alter characters' motivations, shift the point of view, or challenge the original's values. Recognizing these moves is a core reading skill tested by standards like Common Core RL.9-10.9.

The central question this lesson addresses is: How do you systematically compare a new literary work with its source material and explain what the author changed, why they changed it, and what meaning those changes create? By the end of this lesson, you will have a clear framework for answering that question every time you encounter a text that draws on an earlier work.

Core Principles of Source Transformation

When an author draws on a source text, the relationship between the two works can be analyzed through several key dimensions. Think of these dimensions as lenses you hold up to the new text; each one reveals a different kind of change. Mastering these lenses will allow you to write precise, insightful analyses.

Visual Explanation: The Transformation Map

The diagram below shows how the five dimensions of transformation connect a source text to a new work. At the center, both texts share a recognizable core — the common foundation of characters, plot elements, or themes that allows readers to identify the relationship. Radiating outward are the five dimensions along which the author can make changes. The more dimensions an author transforms, the more distinctly original the new work feels, even though it is still clearly connected to its source.

When you analyze a text that transforms source material, start at the center of this map: identify the common foundation that both texts share. Then work outward through each dimension, asking yourself what the author preserved, what they altered, and what effect the alteration has on meaning. Not every dimension will show a major transformation — sometimes an author changes only one or two — but examining all five ensures you don't miss anything.

How Source Transformation Works: A Deep Dive

The Three Stages of Analytical Reading

Analyzing source transformation is not a single act; it unfolds in three stages. First, you must identify the source — recognizing which earlier text the author is drawing on. Sometimes this is obvious (the title may reference the original), and sometimes it requires background knowledge or research. Second, you must map the parallels — cataloguing the specific elements that the new work shares with the source. Third, you must analyze the departures — examining where and how the author diverges from the original and interpreting what purpose those changes serve.

Key Questions for Each Dimension

As you move through Stage 3, use targeted questions to probe each dimension. For structural transformation, ask: Did the author rearrange the order of events? Did they add or remove scenes? Did they change the ending? For character transformation, ask: Which characters appear in both texts? Have their traits, motivations, or roles shifted? Has the protagonist changed? For thematic transformation, ask: Does the new work convey the same moral or message? If not, what new themes emerge? For contextual transformation, ask: Has the setting changed in time, place, or culture? How does this new context reframe the conflict? And for tonal and stylistic transformation, ask: Has the genre, point of view, or emotional register changed? How does that shift affect the reader's experience?

Types of Source Material Authors Draw On

Not all source material is the same. Authors draw on a wide variety of earlier texts, and recognizing the type of source helps you predict what kinds of transformations are likely and what cultural weight the original carries. The table below classifies common source types, gives a well-known example of each, and notes the typical transformations associated with that category.

Notice a pattern in the table: the most common transformations tend to involve theme and character. That makes sense, because changing what a story means and who it's about are the two most powerful ways to make an old story feel new. Context and tone changes often follow naturally once the theme or character has been altered — a story about female agency, for instance, may demand a more intimate, first-person tone than the epic original.

Worked Example: Ovid's Pygmalion vs. Shaw's Pygmalion

Let's walk through a complete analysis of how George Bernard Shaw drew on and transformed a classical source. The source is the myth of Pygmalion from Ovid's Metamorphoses (8 CE). The new work is Shaw's play Pygmalion (1913). We will follow the three-stage process.

Strengths and Common Pitfalls in Source-Transformation Analysis

Like any analytical skill, comparing source and new work can go right or wrong depending on your approach. The table below contrasts strong analytical moves with common mistakes students make.

Connecting to Advanced Literary Theory

The skill you are building here — analyzing how an author draws on and transforms source material — connects to several branches of advanced literary study. As you move into AP Literature, college courses, or independent reading, you'll encounter more sophisticated frameworks for thinking about textual relationships.

You don't need to master these advanced frameworks right now; the point is that the analytical muscles you are developing — close comparison, attention to change, interpretation of purpose — are the same muscles scholars use at every level. Every time you ask "What did the author change, and why does it matter?" you are doing real literary criticism.

Practice Problems

Lesson Summary