W11A. Literature Search, Search Strategies, Source Credibility, Reading Log

1. Summary

1.1 Literature Search

When conducting academic research, particularly for your Research Report Essay (RRE), you need to find reliable external sources to support your arguments. Literature search is the systematic process of finding scholarly publications, research articles, and other academic sources relevant to your research topic.

The primary places to find academic sources are databases - organized collections of scholarly publications that allow you to search by keywords, authors, topics, and other criteria. Unlike general web searches, academic databases focus specifically on peer-reviewed and scholarly content.

1.1.1 Major Academic Databases

Several key databases serve different academic disciplines:

Google Scholar is a freely accessible search engine that indexes scholarly literature across many disciplines and sources. It’s an excellent starting point because of its broad coverage and accessibility.

ScienceDirect is Elsevier’s platform containing full-text scientific and medical research, particularly strong in natural sciences, engineering, and health sciences.

ACM Digital Library specializes in computing and information technology, providing access to articles, conference proceedings, and magazines published by the Association for Computing Machinery.

IEEE Xplore focuses on electrical engineering, computer science, and electronics, offering access to IEEE’s publications and standards.

ResearchGate functions as both a database and a social network for researchers, where scientists share their publications and collaborate.

arXiv is a preprint repository where researchers share their work before formal peer review, particularly popular in physics, mathematics, computer science, and related fields.

1.2 Search Strategies

Finding the right sources requires strategic approaches. Two fundamental search strategies are random search and snowballing.

1.2.1 Random Search

Random search (also called keyword search or direct search) involves entering keywords related to your research topic into a database and exploring the results. This approach is useful when you’re beginning your research and need to understand the landscape of available literature.

To conduct an effective random search:

1. Identify 2-3 core keywords that capture the essence of your research question
2. Enter these keywords into your chosen database
3. Review the search results, paying attention to titles and abstracts
4. Refine your keywords based on what you find

For example, if you’re researching artificial intelligence ethics, you might search for “AI ethics,” “algorithmic bias,” or “machine learning fairness.”

1.2.2 Snowballing

Snowballing is a citation-based search strategy that leverages the reference lists of articles you’ve already found. There are two types:

Backward snowballing means examining the reference list (bibliography) of a relevant paper to find older sources that influenced it. When you find a useful article, look at what sources the authors cited - these citations represent established work in the field.

Forward snowballing means finding newer papers that have cited your source article. Most databases show you which papers have cited a given work, allowing you to trace how the research has evolved and been built upon.

Snowballing is particularly powerful because it follows the intellectual connections that experts in the field have already made, helping you find highly relevant sources you might miss with keyword searches alone.

1.3 Source Credibility

Not all sources are equally reliable. Source credibility refers to the trustworthiness, authority, and quality of a publication. Using low-quality sources undermines your entire argument, so learning to evaluate source credibility is essential.

1.3.1 Credibility Check Criteria

When evaluating a source, apply these five criteria:

1. Search Method and Peer Review

The first filter is whether the source has undergone peer review - a process where other experts in the field evaluate the research before publication. Peer-reviewed journal articles and conference papers are generally more credible than newspaper articles, blog posts, or non-reviewed publications. Avoid citing sources that haven’t been vetted by the academic community unless you have a specific reason and acknowledge their limitations.

2. Journal Ranking and Quartile

Academic journals are ranked based on their impact and prestige. Journal rankings and quartile classifications (Q1, Q2, Q3, Q4) indicate a journal’s standing within its field. Q1 journals represent the top 25% most influential journals in their discipline. You can check journal rankings through databases like Scimago Journal Rankings or by looking up the journal’s impact factor - a measure of how frequently articles in that journal are cited.

Publishing in higher-ranked journals typically indicates more rigorous review processes and more significant contributions to the field.

3. Author Experience and H-Index

Consider the author’s expertise and reputation. Look at:

• Their institutional affiliation (are they at a recognized university or research institution?)
• Their publication record (how many papers have they published in this field?)
• Their h-index - a metric that reflects both productivity and citation impact. An h-index of 10 means the author has 10 papers that have each been cited at least 10 times.

You can find author information on platforms like Google Scholar, ResearchGate, or institutional websites.

4. Source Quality

Examine the article itself for quality indicators:

• Is the language professional and clear, or filled with errors and poor grammar?
• Does it follow proper academic formatting with citations and references?
• Is the methodology clearly described and appropriate?
• Are claims supported with evidence?

Poor writing quality, lack of proper citations, or vague methodology suggest a less credible source.

5. Conflict of Interest

Consider whether the research might be biased due to sponsorship or conflict of interest. If a tobacco company funds research on smoking health effects, or if a pharmaceutical company funds research on their own drug, you should be skeptical. Reputable journals require authors to disclose funding sources and potential conflicts of interest, usually near the end of the article.

1.4 Reading Log

As you conduct literature searches and find multiple sources, you need a system to organize your reading. A reading log (also called a literature log or research log) is a structured document where you record key information about each source you read.

1.4.1 Essential Elements of a Reading Log

A comprehensive reading log should include:

Bibliographic Information:

• Title of the article or book
• Author(s) names
• Year of Publication
• Link or DOI (Digital Object Identifier) for easy access later
• Database where you found it

Content Summary:

• Keywords that describe the article’s focus
• Research Question / Aim / Goal / Purpose - what question is the paper trying to answer?
• Methods / Data - how did the researchers conduct their study? What data did they use?
• Results - what did they find? What are their main conclusions?

Evaluation:

• Credibility - your assessment of the source’s reliability based on the criteria discussed earlier
• Relevance - how does this source relate to your research question? Will it support or challenge your argument?

Maintaining a detailed reading log saves enormous time later when you’re writing your paper. Instead of re-reading articles to remember their main points, you can quickly consult your log. It also helps you see patterns across multiple sources and identify gaps in the literature.