Literature review

A literature review or narrative review is a type of review article. A literature review is a scholarly paper, which includes the current knowledge including substantive findings, as well as theoretical and methodological contributions to a particular topic. Literature reviews are secondary sources, and do not report new or original experimental work. Most often associated with academic-oriented literature, such reviews are found in academic journals, and are not to be confused with book reviews that may also appear in the same publication. Literature reviews are a basis for research in nearly every academic field.[1] A narrow-scope literature review may be included as part of a peer-reviewed journal article presenting new research, serving to situate the current study within the body of the relevant literature and to provide context for the reader. In such a case, the review usually precedes the methodology and results sections of the work.

Producing a literature review may also be part of graduate and post-graduate student work, including in the preparation of a thesis, dissertation, or a journal article. Literature reviews are also common in a research proposal or prospectus (the document that is approved before a student formally begins a dissertation or thesis).[2]


The main types of literature reviews are: evaluative, exploratory, and instrumental.[3]

A fourth type, the systematic review, is often classified separately, but is essentially a literature review focused on a research question, trying to identify, appraise, select and synthesize all high-quality research evidence and arguments relevant to that question. A meta-analysis is typically a systematic review using statistical methods to effectively combine the data used on all selected studies to produce a more reliable result.[4]

Process and product

Shields and Rangarajan (2013) distinguish between the process of reviewing the literature and a finished work or product known as a literature review.[5]:193–229 The process of reviewing the literature is often ongoing and informs many aspects of the empirical research project.

The process of reviewing the literature requires different kinds of activities and ways of thinking.[6] Shields and Rangarajan (2013) and Granello (2001) link the activities of doing a literature review with Benjamin Bloom’s revised taxonomy of the cognitive domain (ways of thinking: remembering, understanding, applying, analyzing, evaluating, and creating).[5][7]

See also


  1. ^ Hart, Chris (2018). Doing a Literature Review: Releasing the Research Imagination. SAGE Study Skills Series. SAGE. pp. xiii. ISBN 9781526423146.
  2. ^ Baglione, L. (2012). Writing a Research Paper in Political Science. Thousand Oaks, California: CQ Press.
  3. ^ Adams, John; Khan, Hafiz T A; Raeside, Robert (2007). Research methods for graduate business and social science students. New Delhi: SAGE Publications. p. 56. ISBN 9780761935896.
  4. ^ Bolderston, Amanda (June 2008). "Writing an Effective Literature Review". Journal of Medical Imaging and Radiation Sciences. 39 (2): 86–92. doi:10.1016/j.jmir.2008.04.009.
  5. ^ a b Shields, Patricia; Rangarjan, Nandhini (2013). A Playbook for Research Methods: Integrating Conceptual Frameworks and Project Management. Stillwater, Oklahoma: New Forums Press. ISBN 1-58107-247-3.
  6. ^ Baker, P. (2000). "Writing a Literature Review". The Marketing Review. 1 (2): 219–247.
  7. ^ Granello, D. H. (2001). "Promoting cognitive complexity in graduate written work: Using Bloom's taxonomy as a pedagogical tool to improve Literature Reviews". Counselor Education & Supervision. 40: 292–307.

Further reading


  • Cooper, Harris M. (1998). Synthesizing Research: A Guide for Literature Reviews. Applied Social Research Methods (3rd ed.). Thousand Oaks, California: SAGE Publications. ISBN 978-0761913481.
  • Creswell, John W. (2013). "Review of the Literature". Research Design. Qualitative, Quantitative, and Mixed Method Approaches (4th ed.). Thousand Oaks, California: SAGE Publications. ISBN 9781452226101.
  • Dellinger, Amy B. (2005). "Validity and the Review of Literature". Research in the Schools. 12 (2): 41–54.
  • Dellinger, Amy B.; Leech, Nancy L. (2007). "Toward a Unified Validation Framework in Mixed Methods Research". Journal of Mixed Methods Research. 1 (4): 309–332.
  • Galvan, José L. (2015). Writing Literature Reviews: A Guide for Students of the Social and Behavioral Sciences (6th ed.). Pyrczak Publishing. ISBN 978-1936523375.
  • Green, Bart N.; Johnson, Claire D.; Adams, Alan (2006). "Writing Narrative Literature Reviews for Peer-Reviewed Journals: Secrets of the Trade". Journal of Chiropractic Medicine. 5 (3): 101–114.
  • Hart, Chris (2008). "Literature Reviewing and Argumentation". In Hall, Gerard; Longman, Jo. The Postgraduate's Companion. Thousand Oaks, California: SAGE Publications. ISBN 978-1-4129-3026-0.

Various fields

  • Hart, Chris (1998). Doing a Literature Review: Releasing the Social Science Research Imagination. SAGE Study Skills. London: SAGE Publications. ISBN 9780761959755.
  • Hart, Chris (2001). Doing a Literature Search: A Guide for the Social Sciences. SAGE Study Skills. Thousand Oaks, California: SAGE Publications. ISBN 978-0761968108.
American Philatelic Research Library

The American Philatelic Research Library (APRL), based in Bellefonte, Pennsylvania, is the largest public philatelic library in the United States.

The library serves the needs of the members of the American Philatelic Society (APS) – with which it is closely affiliated and shares premises – and the public. It has more than 21,000 book titles and 5,700 journal titles. Its current 19,000-square-foot (1,800 m2) building opened in 2016.

Bjork–Shiley valve

The Björk–Shiley valve is a mechanical prosthetic heart valve. The valve was co-invented by American engineer Donald Shiley and Swedish heart surgeon Viking Björk.

Beginning in 1971, it has been used to replace aortic valves and mitral valves. It was the first successful tilting-disc valve. It was manufactured first by Shiley Laboratories, then later by Pfizer after that company purchased Shiley. One model of the Bjork–Shiley valve became the subject of a famous lawsuit and recall after it was shown to malfunction.

Case report

In medicine, a case report is a detailed report of the symptoms, signs, diagnosis, treatment, and follow-up of an individual patient. Case reports may contain a demographic profile of the patient, but usually describe an unusual or novel occurrence. Some case reports also contain a literature review of other reported cases. Case reports are professional narratives that provide feedback on clinical practice guidelines and offer a framework for early signals of effectiveness, adverse events, and cost. They can be shared for medical, scientific, or educational purposes.

Cosmological constant

In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is the energy density of space, or vacuum energy, that arises in Albert Einstein's field equations of general relativity. It is closely associated to the concepts of dark energy and quintessence.Einstein originally introduced the concept in 1917 to counterbalance the effects of gravity and achieve a static universe, a notion which was the accepted view at the time. Einstein abandoned the concept in 1931 after Hubble's discovery of the expanding universe. From the 1930s until the late 1990s, most physicists assumed the cosmological constant to be equal to zero. That changed with the surprising discovery in 1998 that the expansion of the universe is accelerating, implying the possibility of a positive nonzero value for the cosmological constant.Since the 1990s, studies have shown that around 68% of the mass–energy density of the universe can be attributed to so-called dark energy. The cosmological constant Λ is the simplest possible explanation for dark energy, and is used in the current standard model of cosmology known as the ΛCDM model. While dark energy is poorly understood at a fundamental level, the main required properties of dark energy are that it functions as a type of anti-gravity, it dilutes much more slowly than matter as the universe expands, and it clusters much more weakly than matter, or perhaps not at all.According to quantum field theory (QFT) which underlies modern particle physics, empty space is defined by the vacuum state which is a collection of quantum fields. All these quantum fields exhibit fluctuations in their ground state (lowest energy density) arising from the zero-point energy present everywhere in space. These zero-point fluctuations should act as a contribution to the cosmological constant Λ, but when calculations are performed these fluctuations give rise to an enormous vacuum energy. The discrepancy between theorized vacuum energy from QFT and observed vacuum energy from cosmology is a source of major contention, with the values predicted exceeding observation by some 120 orders of magnitude, a discrepancy that has been called "the worst theoretical prediction in the history of physics!". This issue is called the cosmological constant problem and it is one of the greatest unsolved mysteries in science with many physicists believing that "the vacuum holds the key to a full understanding of nature".

Great Australian Bight

The Great Australian Bight is a large oceanic bight, or open bay, off the central and western portions of the southern coastline of mainland Australia.

Grounded theory

Grounded theory (GT) is a systematic methodology in the social sciences involving the construction of theories through methodical gathering and analysis of data. Grounded theory is a research methodology which operates inductively, in contrast to the hypothetico-deductive approach. A study using grounded theory is likely to begin with a question, or even just with the collection of qualitative data. As researchers review the data collected, repeated ideas, concepts or elements become apparent, and are tagged with codes, which have been extracted from the data. As more data is collected, and re-reviewed, codes can be grouped into concepts, and then into categories. These categories may become the basis for new theory. Thus, grounded theory is quite different from the traditional model of research, where the researcher chooses an existing theoretical framework, and only then collects data to show how the theory does or does not apply to the phenomenon under study.

IEEE P1906.1

The IEEE P1906.1 - Recommended Practice for Nanoscale and Molecular Communication Framework is a standards working group sponsored by the IEEE Communications Society Standards Development Board whose goal is to develop a common framework for nanoscale and molecular communication. Because this is an emerging technology, the standard is designed to encourage innovation by reaching consensus on a common definition, terminology, framework, goals, metrics, and use-cases that encourage innovation and enable the technology to advance at a faster rate. The draft passed an initial sponsor balloting with comments on January 2, 2015. The comments were addressed by the working group and the resulting draft ballot passed again on August 17, 2015. Finally, additional material regarding SBML was contributed and the final draft passed again on October 15, 2015. The draft standard was approved by IEEE RevCom in the final quarter of 2015.

James Thurber

James Grover Thurber (December 8, 1894 – November 2, 1961) was an American cartoonist, author, humorist, journalist, playwright, and celebrated wit. He was best known for his cartoons and short stories published mainly in The New Yorker magazine, such as "The Catbird Seat", and collected in his numerous books. He was one of the most popular humorists of his time, as he celebrated the comic frustrations and eccentricities of ordinary people. He wrote the Broadway comedy The Male Animal in collaboration with his college friend Elliott Nugent; it was later adapted into a film starring Henry Fonda and Olivia de Havilland. His short story "The Secret Life of Walter Mitty" has been adapted for film twice, once in 1947 and again in 2013.

Lashi language

Lashi (endonym Lacid) is a Burmish language. Although the endonym Lashi is often used by Western researchers, the people refer to themselves and their language as Lacid. It is according to Nishi (1999: 70) in the Maruic branch, which preserves the preglottalized initials of Proto-Burmish in the most phonotactic environments.

Data on Lashi is available in the followining publications (A Literature Review on Segments in Lacid (Lashi) Noftz 2017,) (Luce 1985: Charts S, T, V; Huang et al. 1992; Wannemacher 1995-7, as cited in Mann 1998, and Yabu 1988).


Lymphadenopathy or adenopathy is disease of the lymph nodes, in which they are abnormal in size, number, or consistency. Lymphadenopathy of an inflammatory type (the most common type) is lymphadenitis, producing swollen or enlarged lymph nodes. In clinical practice, the distinction between lymphadenopathy and lymphadenitis is rarely made and the words are usually treated as synonymous. Inflammation of the lymphatic vessels is known as lymphangitis. Infectious lymphadenitis affecting lymph nodes in the neck is often called scrofula.

The term comes from the word lymph and a combination of the Greek words αδένας, adenas ("gland") and παθεία, patheia ("act of suffering" or "disease").

Lymphadenopathy is a common and nonspecific sign. Common causes include infections (from minor ones such as the common cold to serious ones such as HIV/AIDS), autoimmune diseases, and cancers. Lymphadenopathy is also frequently idiopathic and self-limiting.

Manual therapy

Manual therapy, or manipulative therapy, is a physical treatment primarily used by physical therapists, physiotherapists to treat musculoskeletal pain and disability; it most includes kneading and manipulation of muscles, joint mobilization and joint manipulation. It's also used by occupational therapists, chiropractors, massage therapists, athletic trainers, osteopaths, and physicians A 2011 literature review indicates that placebo is one of likely many potentially relevant mechanisms through which manual therapy improves clinical outcomes related to musculoskeletal pain conditions.


Paludification is the most common process by which peatlands in the boreal zone are formed.

Philatelic literature

Philatelic literature is written material relating to philately, primarily information about postage stamps and postal history.

Ranglong language

Ranglong language is a Kuki-Chin language of India and Burma. It is also recorded as Langrong by UNESCO and declared as critically endangered language.

The Ranglong language is also known as "Riam chong".


Research comprises "creative and systematic work undertaken to increase the stock of knowledge, including knowledge of humans, culture and society, and the use of this stock of knowledge to devise new applications." It is used to establish or confirm facts, reaffirm the results of previous work, solve new or existing problems, support theorems, or develop new theories. A research project may also be an expansion on past work in the field. Research projects can be used to develop further knowledge on a topic, or in the example of a school research project, they can be used to further a student's research prowess to prepare them for future jobs or reports. To test the validity of instruments, procedures, or experiments, research may replicate elements of prior projects or the project as a whole. The primary purposes of basic research (as opposed to applied research) are documentation, discovery, interpretation, or the research and development (R&D) of methods and systems for the advancement of human knowledge. Approaches to research depend on epistemologies, which vary considerably both within and between humanities and sciences. There are several forms of research: scientific, humanities, artistic, economic, social, business, marketing, practitioner research, life, technological, etc.

Saba University School of Medicine

Saba University School of Medicine is a medical school located on Saba, a special municipality of the Netherlands in the Caribbean. Saba University confers upon its graduates the Doctor of Medicine (MD) degree.

Systematic review

Systematic reviews are a type of literature review that uses systematic methods to collect secondary data, critically appraise research studies, and synthesize findings qualitatively or quantitatively. Systematic reviews formulate research questions that are broad or narrow in scope, and identify and synthesize studies that directly relate to the systematic review question. They are designed to provide a complete, exhaustive summary of current evidence relevant to a research question. Systematic reviews of randomized controlled trials are key to the practice of evidence-based medicine, and a review of existing studies is often quicker and cheaper than embarking on a new study.

An understanding of systematic reviews, and how to implement them in practice, is highly recommended for professionals involved in the delivery of health care. Besides health interventions, systematic reviews may examine clinical tests, public health interventions, environmental interventions, social interventions, adverse effects, and economic evaluations. Systematic reviews are not limited to medicine and are quite common in all other sciences where data are collected, published in the literature, and an assessment of methodological quality for a precisely defined subject would be helpful.


Whakapapa (Māori pronunciation: [ˈfakapapa], Māori pronunciation: ['ɸa-]), or genealogy, is a fundamental principle in Māori culture. A person reciting their whakapapa proclaims their identity, places themselves in a wider context, and links themselves to land and tribal groupings and the mana of those.Experts in whakapapa can trace and recite a lineage not only through the many generations in a linear sense, but also between such generations in a lateral sense.

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