Evaluating Arguments
Assess the overall strength of arguments by weighing reasons, evidence, counter-arguments, and flaws to reach a justified verdict.
Key Terms
What Does Evaluating Mean?
Evaluating an argument means assessing how well it establishes its conclusion. This is more than listing strengths and weaknesses — it requires a final, justified judgement about the argument's overall persuasiveness.
A strong evaluation considers: (1) the quality and relevance of the reasons, (2) the strength and reliability of the evidence, (3) whether assumptions are acceptable, (4) how serious any flaws are, and (5) how well counter-arguments are addressed. The conclusion should say clearly whether the argument is persuasive, and why.
Argument: "Schools should replace exams with project-based assessment." Analysis: Strong reasons (project work develops creativity, reduces test anxiety). Evidence present but from small samples. Flaw: false dichotomy — exams and projects could co-exist. Counter-argument addressed but rebuttal is weak.
Analysis: Evaluation verdict: "The argument has genuine merit but is ultimately unconvincing because it presents a false choice and relies on limited evidence. A mixed-assessment proposal would be more persuasive."
Weighing Strengths Against Weaknesses
Not every flaw is equally damaging. A minor weakness in one piece of evidence does not destroy an argument supported by multiple strong reasons. When evaluating:
• Assess the centrality of each flaw: does it undermine the main conclusion or only a supporting point? • Consider how many strong reasons remain after removing the weakest ones. • Consider the quality of the evidence: a single peer-reviewed study may outweigh several anecdotal examples. • Consider whether unaddressed counter-arguments fundamentally threaten the conclusion.
A common mistake is treating all flaws as equally fatal. Show discrimination by ranking them.
An argument with 3 strong evidenced reasons, one ad hominem aside, and an unaddressed but significant counter-argument.
Analysis: The ad hominem is a flaw but is not central. The unaddressed counter-argument is more serious. Overall evaluation: "Moderately persuasive — the core case is strong, but the author's failure to address [counter-argument] leaves a significant gap."
Reaching a Final Judgement
Cambridge examiners want to see a definite verdict, not a list with "however" on each side with no conclusion. Avoid phrases like "both sides have good points" without committing to a view. A good final judgement:
• Is proportional to the evidence (not all arguments are completely strong or completely weak) • Names the most important strength or weakness • Explains WHY it is decisive • Uses qualifying language if needed: "largely persuasive but not entirely convincing because..."
"This argument has many strengths and weaknesses, and it is hard to say definitively either way."
Analysis: This scores poorly — no verdict reached. The examiner wants you to commit.
"Despite the valid concerns about cost, the argument is ultimately persuasive because the safety evidence is specific, peer-reviewed, and directly relevant to the conclusion. The financial objections, though real, can be addressed through phased implementation."
Analysis: This commits to a verdict, names the decisive factor, and addresses the competing concern — exactly what Cambridge examiners reward.
Cambridge Exam Tips
- 💡Always end an evaluation with a clear overall judgement — "on balance, this argument is persuasive/unpersuasive because..."
- 💡Distinguish between flaws that undermine the main conclusion and those that only damage a supporting point.
- 💡The strongest evaluations name the MOST IMPORTANT strength and weakness and explain why they outweigh each other.
- 💡Avoid: "The argument has strengths and weaknesses" with no decision. This is a non-answer.
Practice Questions
All practice →What is the overall evaluation verdict you should reach about this argument?
Answer in Practice →Evaluate the overall strength of this argument. Consider both its strengths and weaknesses.
Answer in Practice →