Research method - Research Designs and Methods

Forms of Research and Research Methods Introduction Research is fundamentally about producing new knowledge or deepening understanding of a topic. However, research comes in many different forms, each with distinct purposes, methods, and ways of discovering truth. Understanding these different approaches is essential because they reflect different assumptions about what questions are worth asking and how best to answer them. This guide walks you through the major forms and approaches to research that you'll encounter in academic work. Original Research: Creating New Knowledge Original research (also called primary research) differs fundamentally from summarizing or reviewing existing work because it creates genuinely new knowledge. Rather than compiling what others have already discovered, original researchers gather their own data through direct observation, conduct their own experiments, or perform novel analysis on data. This focus on originality is so important that it becomes a major criterion for publishing research in academic journals. When researchers submit their work for publication, peer reviewers evaluate whether the work actually contributes something new to the field. Without this originality requirement, scholarly progress would stall because we'd only be recycling existing ideas. The Scientific Research Process Scientific research follows a systematic, step-by-step process designed to gather reliable data and develop valid theories about how the natural world works. While scientists may adapt this process depending on their field, the general sequence looks like this: Observation: Notice something in the natural world that puzzles you Hypothesis formation: Develop a testable prediction about what's happening Define your concepts: Create clear definitions for the variables you're studying (both conceptual definitions and operational definitions—how you'll actually measure them) Data gathering: Collect information through experiments or systematic observation Analysis: Organize and examine your data using appropriate statistical or analytical methods Interpretation: Determine what your data actually means Test and revise: Evaluate whether your hypothesis was supported, and refine your understanding Conclude: Share what you've learned The beauty of this systematic approach is that it produces reliable, repeatable results. If another scientist follows the same process, they should get similar results. Understanding Hypotheses A hypothesis is a testable prediction about the relationship between variables. This is an important distinction: a hypothesis must be something you can actually test through observation or experiment. You cannot simply guess or propose something untestable. Here's a crucial point that confuses many students: a hypothesis can never be proven true. Instead, through research, a hypothesis can only be supported (the data backs it up) or rejected (the data contradicts it). This is because future research might always contradict what we currently believe. Science is about finding increasingly strong evidence, not absolute proof. Many researchers also use a null hypothesis, which takes the opposite position: it states that no relationship exists between the variables being studied. For example, if your main hypothesis predicts that studying longer improves exam scores, your null hypothesis would state that study length has no effect on exam scores. Testing against the null hypothesis helps researchers determine whether their results are meaningful or just due to chance. Quantitative Research: Measuring and Numbers Quantitative research systematically investigates the numerical properties and relationships between variables. If you want to know "how much" or "to what extent," quantitative research is your tool. Quantitative researchers use structured instruments (like surveys with specific questions) and random sampling (selecting participants without bias) to collect data that can be analyzed with statistical methods. The real power of quantitative research is generalizability: when sampling is done properly, researchers can take findings from a small sample and confidently say those patterns apply to much larger populations. Common quantitative research designs include: Experimental studies: Researchers manipulate variables and observe effects (Does this drug reduce symptoms?) Correlational studies: Researchers examine whether variables are related (Are study hours and test scores related?) Survey studies: Researchers ask questions to describe characteristics of a population (What percentage of students are satisfied?) Quantitative research typically tests hypotheses derived from theory or estimates how widespread a phenomenon is. Qualitative Research: Exploring Meaning Qualitative research takes a fundamentally different approach. Rather than reducing everything to numbers, qualitative research is subjective and focuses on meanings, definitions, characteristics, symbols, and metaphors. If quantitative research asks "how many," qualitative research asks "what is the nature of this" or "what does this mean." For example, a qualitative researcher might interview people in depth to understand their lived experiences, or analyze texts to uncover hidden meanings. Research in the Humanities Humanities research explores human experience, culture, and meaning—areas where there often isn't one "correct" answer waiting to be discovered. Rather than following the linear scientific method, humanities scholars use approaches like hermeneutics (interpretation of texts) and semiotics (study of signs and meanings). <extrainfo> A key feature of humanities research is that context is always central: the social, historical, political, cultural, or ethnic context shapes how we interpret meaning. The same text means different things to different communities at different historical moments. Historical research is a specific form of humanities research. It uses primary sources (original documents from the time period) and the historical method to construct accounts of the past. The historical method involves: External criticism: evaluating whether sources are authentic Internal criticism: determining what sources actually say and how reliable that information is Synthesis: combining information from multiple sources into a coherent narrative Humanities research can be qualitative or quantitative, and scholars often draw on theories like feminist theory or queer theory to frame their interpretations. </extrainfo> Mixed-Method Research Some research problems benefit from combining approaches. Mixed-method research deliberately integrates both qualitative and quantitative elements, often using both primary and secondary data. For instance, a researcher might survey hundreds of people (quantitative) and then conduct in-depth interviews with some of them (qualitative) to understand why the patterns emerged. Non-Empirical (Theoretical) Research Not all research requires gathering new data. Non-empirical research (also called theoretical research) develops and refines theory using existing knowledge without conducting new observations or experiments. Theoretical researchers analyze existing literature, develop conceptual models, and build logical arguments. This work is valuable precisely because it generates testable hypotheses that other researchers can then examine empirically in future studies. Theory and empirical research work together: theory suggests what to test, and empirical research informs theory. The Big Picture: Forms of the Research Process Beyond these specific methods, researchers also think about why they're conducting research. The research process can take three main forms depending on your goal: Exploratory research: You're trying to identify or define a problem that hasn't been well understood. This is often the first research on a topic. Constructive research: You're testing theories and proposing solutions to problems. You're building on what exploratory research found. Empirical research: You're testing the feasibility of proposed solutions using actual evidence from the real world. Think of these as stages: exploratory research discovers problems, constructive research proposes answers, and empirical research tests whether those answers actually work.