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Research Methods

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Key Concepts to Memorize

Definition of Research:


> "Answering questions in a systematic way to increase knowledge"


7-Step Research Process:


1. Define the research question

2. Background research (literature review)

3. Formulate hypothesis

4. Design the study (methods)

5. Collect data

6. Analyze data

7. Draw conclusions → communicate results


Peer Review Process:


Submission → Peer Review (2–3 experts) → Revision → Acceptance → Publication

  • Reviewers are independent experts in the field
  • Authors revise based on feedback
  • Goal: quality control, validation, credibility

Academic Paper Structure:


SectionPurpose
AbstractSummary of the whole paper
IntroductionBackground, motivation, research gap
MethodsHow the study was conducted
ResultsWhat was found
DiscussionWhat it means, limitations
ConclusionMain takeaways
ReferencesCited sources

Literature Databases:


  • Google Scholar — broad, general search across all fields
  • Scopus — citation tracking, metrics
  • Web of Science — impact factors, journal rankings
  • PubMed — medical and biomedical literature

Evidence Hierarchy Pyramid (bottom = weakest → top = strongest):


        Metaanalyses        ← strongest
      Systematic Reviews
     Traditional Reviews
    Individual Studies
  Expert Opinions           ← weakest

LLMs in Research — Limitations:


  • LLMs cannot generate genuinely new knowledge (they recombine existing text)
  • Hallucinations = plagiarism — fabricated citations/facts are unacceptable in research
  • ArXiv: preprint server — NO peer review, only minimal screening for completeness

- Fast dissemination but no quality guarantee