Even talented students produce papers that underperform their potential. Writing mistakes — some obvious, others subtle — undermine arguments, distract readers, and suggest carelessness that damages credibility. The good news: most academic writing problems follow predictable patterns.

Structural Mistakes That Weaken Arguments

Mistake 1: The Missing Roadmap

Papers that plunge directly into evidence without establishing context leave readers disoriented.

The Problem

Starting with "The first thing to consider is…" without any introduction.

The Solution

Include a clear introduction that establishes significance, states your thesis, and previews organisation.

Mistake 2: The Wandering Paragraph

Paragraphs should develop single ideas with focused precision.

Signs of Wandering Paragraphs:

  • Multiple topic sentences
  • Abrupt shifts between unrelated ideas
  • Length exceeding one page
  • Difficulty summarising the paragraph's point

Mistake 3: The Abrupt Ending

The Problem

Ending with your final piece of evidence and no concluding paragraph.

The Solution

Restate your thesis in fresh language, summarise findings, and discuss implications.

Argumentation Errors

Mistake 4: Unsupported Claims

Problem: "Social media clearly has negative effects on teenagers." (Asserting without evidence)

Solution: "Research consistently demonstrates negative effects… A meta-analysis of 15 studies (Smith, 2024) found significant correlations…"

Mistake 5: The Straw Man

Problem: "Critics of social media research simply don't understand modern technology." (Dismissive)

Solution: "Some scholars question the causal relationship, noting that correlational studies cannot establish directionality (Jones, 2023)." (Charitable engagement)

Mistake 6: False Causation

"While countries with higher chocolate consumption tend to win more Nobel Prizes, this correlation likely reflects underlying factors such as wealth and education access rather than a causal relationship."

Style and Voice Problems

Mistake 7: Excessive Hedging

Weak: "It might perhaps be suggested that there could potentially be some possible relationship…"

Strong: "The evidence suggests a relationship between these variables, though additional research is needed to confirm causality."

Mistake 8: Inappropriate Informality

  • Contractions – Use "cannot" instead of "can't"
  • Slang – Replace "a lot" with "many" or "substantial"
  • Conversational phrases – Avoid "you know" or "like I said"

Mistake 9: Passive Voice Overuse

Dull:

"The experiment was conducted. Data was collected. Analysis was performed."

Engaging:

"We conducted the experiment, collected data from 200 participants, and performed statistical analysis."

Mechanical Errors

  • Citation Errors – Inconsistent format, missing page numbers, or mismatched references suggest carelessness.
  • Subject-Verb Agreement – Ensure verbs match their subjects, especially in complex sentences.
  • Comma Splices – Avoid joining independent clauses with only a comma.

The Revision Mindset

Eliminating writing mistakes requires dedicated revision time. Use the multi-pass approach:

  1. Pass 1: Structure and Argument – Does your organisation make sense? Is your argument logical? (See our guides on writing a thesis statement and research paper structure.)
  2. Pass 2: Paragraphs – Does each paragraph have a clear focus? Are transitions smooth?
  3. Pass 3: Sentences – Is each sentence clear? Can any be tightened?
  4. Pass 4: Mechanics – Grammar, punctuation, citation format.