introduction-writing-guide

# Introduction Writing Guide Write compelling research paper introductions using the CARS (Create A Research Space) model with structured approaches for establishing context, identifying gaps, and motivating your study. ## The CARS Model John Swales' Create A Research Space (CARS) model is the most widely used framework for structuring academic introductions. It consists of three rhetorical "moves": | Move | Purpose | Typical Length | |------|---------|---------------| | **Move 1**: Establishing a territory | Show the research area is important and active | 2-4 paragraphs | | **Move 2**: Establishing a niche | Identify a gap, question, or problem | 1-2 paragraphs | | **Move 3**: Occupying the niche | State what your paper does to address the gap | 1-2 paragraphs | ## Move 1: Establishing a Territory ### Strategy 1A: Claiming Centrality Signal that the topic is important, interesting, or well-established: ``` Pattern phrases: - "X has attracted considerable attention in recent years..." - "The role of X in Y is well established..." - "X is a fundamental aspect of..." - "Understanding X is critical for..." - "Recent advances in X have transformed..." ``` ### Strategy 1B: Making Topic Generalizations Summarize the current state of knowledge: ``` Pattern phrases: - "Previous studies have demonstrated that..." - "It is widely accepted that X leads to Y..." - "Several approaches have been proposed to address X, including..." - "Research in this area has traditionally focused on..." ``` ### Strategy 1C: Reviewing Previous Research Cite specific studies to build the scholarly context: ``` Example paragraph: "Smith et al. (2020) demonstrated that X improves Y by 30%. Building on this finding, Jones (2021) extended the approach to Z domain, reporting similar gains. Meanwhile, Chen and Lee (2022) proposed an alternative framework that addresses the scalability limitations of earlier methods." ``` **Tips for Move 1:** - Funnel from broad to narrow: start with the general field, then narrow to your specific topic - Cite 10-20 papers across Move 1 (varies by field) - Balance classic/foundational references with recent work - Use present tense for established knowledge, past tense for specific findings ## Move 2: Establishing a Niche This is the most critical move. You must convince the reader that there is a problem worth solving. ### Strategy 2A: Counter-Claiming (Challenging Previous Work) ``` Pattern phrases: - "However, these approaches suffer from..." - "Despite these advances, X remains poorly understood..." - "A major limitation of existing methods is..." - "These findings have been contradicted by..." ``` ### Strategy 2B: Indicating a Gap ``` Pattern phrases: - "To date, no study has examined..." - "Little attention has been paid to..." - "The relationship between X and Y has not been explored..." - "A comprehensive analysis of X is still lacking..." ``` ### Strategy 2C: Raising a Question ``` Pattern phrases: - "An open question is whether X can be applied to..." - "It remains unclear how X affects Y under conditions Z..." - "This raises the question of..." ``` ### Strategy 2D: Continuing a Tradition ``` Pattern phrases: - "Following the approach of Smith (2020), we extend..." - "Building on recent advances in X, this paper..." ``` **Tips for Move 2:** - The gap must be clearly linked to the context established in Move 1 - Do not criticize previous work too harshly; use hedging language - The gap must be specific enough that your paper can plausibly fill it ## Move 3: Occupying the Niche ### Strategy 3A: Outlining Purposes ``` Pattern phrases: - "In this paper, we propose..." - "The present study aims to..." - "This work introduces a novel approach to..." - "We address this gap by..." ``` ### Strategy 3B: Announcing Principal Findings ``` Pattern phrases: - "Our results demonstrate that..." - "We show that X outperforms Y by Z%..." - "The key finding is that..." ``` ### Strategy 3C: Indicating Article Structure ``` Example: "The remainder of this paper is organized as follows. Section 2 reviews related work. Section 3 describes our methodology. Section 4 presents experimental results. Section 5 discusses implications and limitations. Section 6 concludes." ``` ## Complete Introduction Template ```markdown [Move 1A: Centrality claim - 1-2 sentences] [Topic] is a critical challenge in [field], with applications in [area 1], [area 2], and [area 3]. [Move 1B-1C: Background and review - 2-3 paragraphs] Previous work has established that [known fact]. Smith et al. (2020) showed [finding 1]. Jones (2021) extended this to [finding 2]. More recently, Chen (2022) demonstrated [finding 3]. [Move 2: Gap identification - 1 paragraph] However, existing approaches have several limitations. First, [limitation 1]. Second, [limitation 2]. To date, no work has addressed [specific gap]. [Move 3A: Purpose statement - 1-2 sentences] In this paper, we propose [method/framework] to address [gap]. Our approach differs from prior work in [key difference]. [Move 3B: Key findings - 1-2 sentences] Our experiments on [benchmark] demonstrate that [main result], achieving [quantitative improvement] over the state of the art. [Move 3C: Structure outline - optional, 1-2 sentences] The rest of this paper is organized as follows... ``` ## Common Mistakes to Avoid | Mistake | Problem | Fix | |---------|---------|-----| | Too broad opening | "Since the dawn of time..." | Start at the field level, not civilization level | | No clear gap | Reader does not understand why the paper is needed | State the gap explicitly in 1-2 sentences | | Overpromising | Claims too broad relative to actual contribution | Use hedging: "we investigate" not "we solve" | | Citing too few papers | Appears unaware of related work | Cite 15-25 papers in a typical introduction | | Too long | Buries the contribution | Aim for 1-2 pages (conference) or 2-4 pages (journal) | | Jargon overload | Inaccessible to non-specialist reviewers | Define key terms on first use | ## Discipline-Specific Variations - **STEM**: Move 3B (findings preview) is common; quantitative results often stated in the introduction - **Social Sciences**: More extensive literature review in Move 1; theoretical framing is expected - **Humanities**: Move 2 often involves interpretive questions rather than empirical gaps; longer introductions are acceptable - **Medical/Clinical**: Often follows IMRAD strictly; hypothesis stated explicitly in Move 3