Lesson 7.2: Analysing Arguments: Claims, Evidence and Reasoning

Introduction

In today’s lesson, students, we will dive into the critical analysis of arguments. Understanding how to dissect and evaluate arguments is a fundamental skill in academic writing and effective communication. This lesson will equip you with the tools necessary to identify the key components of arguments and assess their validity.

Learning Objectives

By the end of this lesson, you will be able to:

Identify the parts of an argument: claims (conclusions), reasons (premises), and evidence.
Recognize the conclusion of an argument and the reasons that support it.
Distinguish between strong evidence and weak or irrelevant support.
Identify assumptions that underlie arguments.
Separate facts, opinions, and value judgments.

What is an Argument?

An argument is a set of statements where some statements (premises) provide support for another statement (conclusion). Arguments are central to reasoning and are pervasive in academic settings. To analyze arguments, we can break them down into three essential parts: claims, reasons, and evidence.

Claims

A claim is a statement that asserts something is true or false. Claims serve as the conclusions of arguments. For example, if someone says, "Online learning is effective," this is a claim.

Reasons

Reasons, also known as premises, are the statements that provide support for the claim. They explain why we should accept the claim. For the claim above, a reason might be, "Research shows that students in online courses perform as well as those in traditional classrooms."

Evidence

Evidence supports the reasons. It includes data, facts, examples, or testimonies that bolster the premises. In our example, the evidence might be a specific study that demonstrates comparable performance levels, such as, "A 2022 study by the University of E-Learning found that 85% of students in online courses achieved similar grades to their face-to-face counterparts."

Example of an Argument

Claim: "Climate change is largely caused by human activity."

Reason 1: "Emissions from vehicles and factories contribute significantly to greenhouse gases."
Evidence: "According to the Environmental Protection Agency, in 2020, transportation accounted for 29% of greenhouse gas emissions in the U.S."

Identifying Conclusions and Reasons

Now that we understand the components of an argument, let’s practice identifying them within sample arguments.

Example 1

Argument: "School uniforms improve student behavior because they reduce distractions from clothing choices."

Claim: School uniforms improve student behavior.
Reason: They reduce distractions from clothing choices.

Example 2

Argument: "Reading daily enhances vocabulary skills since exposure to diverse words helps with language acquisition."

Claim: Reading daily enhances vocabulary skills.
Reason: Exposure to diverse words helps with language acquisition.

Activity: Identify the claim and reason in the following argument: "Social media can negatively affect mental health because it often leads to feelings of inadequacy."

Claim: Social media can negatively affect mental health.
Reason: It often leads to feelings of inadequacy.

Distinguishing Strong Evidence from Weak or Irrelevant Support

Not all evidence is created equal. It is important to evaluate the quality and relevance of evidence used in arguments.

Strong Evidence

Strong evidence is relevant, credible, and comes from reliable sources. For example, statistics from peer-reviewed journals, government reports, or recognized experts in a field present strong support for claims.

Weak Evidence

Weak evidence may come from biased sources or irrelevant information. For instance, citing a personal opinion or anecdote as proof can weaken an argument because it lacks broader applicability.

Example of Strong vs. Weak Evidence

Strong Evidence: "A 2021 clinical trial published in the Journal of Medicine found that 90% of patients experienced improvement in their symptoms after treatment."
Weak Evidence: "My friend said that this treatment worked for her, so it must be effective."

Recognizing Assumptions

Every argument is built on assumptions. An assumption is something that is accepted as true without proof in the context of the argument. Recognizing these helps us evaluate how sound the argument really is.

Example of an Assumption

If the argument states, "Students who study late at night perform better on exams," the underlying assumption is that study time is the primary factor affecting exam results.

Activity: In the assertion, "Organic food is healthier than conventional food," identify the assumption.

Assumption: There is a significant difference in health benefits between organic and conventional food.

Separating Fact, Opinion, and Value Judgments

When analyzing arguments, it is crucial to differentiate between facts, opinions, and value judgments.

Facts

Facts are statements that can be objectively verified. They are not influenced by personal feelings. For example, "Water boils at 100 degrees Celsius at sea level" is a fact.

Opinions

Opinions are subjective statements that reflect personal beliefs or feelings. For instance, "Chocolate ice cream is better than vanilla" is an opinion.

Value Judgments

Value judgments express what is considered good or bad, right or wrong. An example might be, "The government should prioritize education over military spending."

Example of Distinctions

Fact: "The Earth orbits the Sun."
Opinion: "The Earth is beautiful because of its diverse landscapes."
Value Judgment: "We should protect the environment to ensure future generations can enjoy its beauty."

Conclusion

Analyzing arguments is an essential skill that allows you to engage critically with information. By understanding claims, reasons, and evidence, you can evaluate the strength of arguments and distinguish between facts, opinions, and assumptions. This understanding is crucial for excelling in academic settings and contributing meaningfully to discussions.

Study Notes

An argument consists of claims (conclusions), reasons (premises), and evidence.
Identify the conclusion and premises of arguments to better understand their structure.
Strong evidence is credible and relevant; weak evidence lacks reliability.
Recognize assumptions that underlie arguments, as they impact the validity.
Distinguish between facts (objective statements), opinions (subjective beliefs), and value judgments (expressions of worth).