TYPES OF LITERATURE
A literature review for the purposes of a dissertation or thesis should be based primarily
in the academic literature. This does not mean that there is not a role for sources such as
government documents, working papers, conference papers and publications with short
print runs. This is often referred to as grey literature. However, you should be clear in
your own mind and in the written review about the role of non-academic sources. For
example, does a newspaper article or series contribute specific highly relevant information
or flag up concerns from the community? You must not use academic journal articles and
grey literature as if they are the same kind of reference with equal status. Academic in
this context means peer-reviewed work published in scholarly journals. Furthermore, you
need to be confident that you have found as much of the available evidence as possible by
searching the literature on your chosen topic in a systematic way. Your search must also be
open to scrutiny so it can be replicated and updated.
HOW TO SEARCH AN ONLINE DATABASE
If you use the British Education Index, your search strategy can often be less closely
defined, simply because the BEI is a specialized education database. When using a
multidisciplinary
database, such as the International Bibliography of the Social Sciences,
more care will be needed to achieve the necessary focus in your search strategy itself.
The British Education Index contains fewer than 100,000 items, ERIC has almost
800,000, so if you search the BEI you can also be more adventurous without the fear of
being overwhelmed with results.
In addition, if you access the British Education Index through Dialog DataStar, you
will also be able to look at the thesaurus, although this involves a rather cumbersome
method to select all the terms of use for your search strategy, whereas the
Cambridge Scientific Abstracts, an interface for ERIC, Sociological Abstracts,
Linguistics and Language Behaviour Abstracts, etc., present the thesaurus very
clearly and in a way which helps you easily select all the appropriate terms to include
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in your search.
In general, the larger the database, the more abstracts there are and the more important
it is to use the thesaurus or set of subject headings, if it is available to you.
SEARCHING DATABASES
To carry out an effective search of an electronic database, you need to understand how
these systems work, and how to plan a search to take full advantage of them. The British
Education Index (BEI) is based on Boolean logic which uses two main logical operators.
It is probably easier to understand this if you have an actual example to look at. For
example, Figure 3.2 shows the preliminary stages of a search carried out by Atkinsonet
al. in their published literature review.
Atkinson, M., Springate, I., Johnson, F. and Halsey, K. (2007) Inter-school Collaboration: A
Literature Review. Slough: NFER.
In Appendix 6 of the report, the authors tell us that they searched the following
sources:
• the NFER Library bibliographical databases
• the current educational research in the UK database (CERUK)
• AEI (Australian Education Index)
• BEI (British Education Index)
• CBCA Fulltext Education (Canadian Business and Current Affairs)
• ERIC (Education Resources Information Center).
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45
When they searched the BEI, they used a number of terms and Figure 3.2 uses the very
first stages of their search to illustrate the difference between Boolean Or/And statements.
In the search, the shaded circle with the words ‘educational cooperation’ represents
all the records that contain these words. This search found 1,351 results for these
words. The other shaded circles with the words ‘cooperative programmes’ and
‘school’ represent all the records that contain ‘cooperative programmes’ and ‘school’.
In this case, the database has 373 and 43,786 records respectively. OR logic is most
commonly used to search for synonymous terms or concepts and will broaden your
search. OR logic collates the results to retrieve all the unique records containing one
term, the other, or both. The more terms or concepts we combine in a search with OR
logic, the more records we will retrieve. In this search, 1,594 records were located for
the search ‘1 OR 2’.
The authors wanted to retrieve records in which all the search terms are present
and this is illustrated by the shaded area overlapping the three circles, representing
all the records that contain all three search terms. So they used the AND operator
which restricts the numbers of records located by combining each term. The more
terms or concepts combined in a search with AND logic, the fewer records we will
retrieve.
1 Educational
cooperation
2 Cooperative
programmes
3 School
1 OR 2
1 AND 3
Figure 3.2 Boolean Logic and search history
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Figure 2.2
Boolean Logic and search history
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67
When they searched the BEI, they used a number of terms and Figure 3.2 uses the very
first stages of their search to illustrate the difference between Boolean Or/And statements.
In the search, the shaded circle with the words ‘educational cooperation’ represents all
the records that contain these words. This search found 1,351 results for these words. The
other shaded circles with the words ‘cooperative programmes’ and ‘school’ represent all
the records that contain ‘cooperative programmes’ and ‘school’. In this case, the database
has 373 and 43,786 records respectively. OR logic is most commonly used to search for
synonymous terms or concepts and will broaden your search. OR logic collates the results
to retrieve all the unique records containing one term, the other, or both. The more terms
or concepts we combine in a search with OR logic, the more records we will retrieve. In
this search, 1,594 records were located for the search ‘1 OR 2’.
The authors wanted to retrieve records in which all the search terms are present and this
is illustrated by the shaded area overlapping the three circles, representing all the records
that contain all three search terms. So they used the AND operator which restricts
the numbers of records located by combining each term. The more terms or concepts
combined in a search with AND logic, the fewer records we will retrieve.
SETTING SEARCH PARAMETERS
Once you have identified your sources, you also need to decide on the search parameters,
such as timescale, geographical scope, age range, types of literature and date of publication.
What is the timescale of your research?
In general, your sources should be recent and if many of your sources are over 10–15
years old, you must explain why this is. You may of course have chosen to use older
ideas and theories and, if so, be prepared to explain why. Researchers often use older
references when they are ‘classic’ works or establish a benchmark against which you are
comparing things. For example, you may want to trace literature published after an
important piece of legislation was introduced.
What is the geographical scope of your review?
It is likely that you will focus on work carried out in the UK, but limiting your review to
studies written in English is a recognized source of bias, so this must be clearly stated in
your search strategy.
What is the age range or educational level of your study population?
If your research is limited to one educational level, this will help to narrow down the
search results.
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Activity 2.1 Developing your own search strategy
It is much better if you can spend some time thinking about the best
keywords and search terms before you start your search. To help you do this,
consider the following questions:
1. What is your research question? Break this down into its component
parts, mapping out all the different subject elements.
2. Compile a list of keywords and phrases that describe these different
elements and that you can use as keywords in your search.
3. Are there similar words that describe each of these concepts?
4. Are there any other more specific keywords that could limit your search?
5. How can you combine these keywords together to search? For example,
‘Gender AND Science’ returns results containing both words. ‘Gender
OR Science’ returns results containing either the word gender or the
word science. Use uppercase letters for OR and AND when using search
engines.
6. Try using different key words to find the information you want.
What types of literature will your review cover?
Decide if you are going to restrict your search to published studies only or if you will also
want to use unpublished theses, newspaper articles, opinion pieces, other grey literature
and current research too. Including different types of literature in the review will give
different viewpoints, but excluding them will narrow your search and make it more
focused.
PUBLISHED META-ANALYSIS LITERATURE REVIEWS
Since 1993, the Evidence for Policy and Practice Information and Co-ordinating Centre
(EPPICentre) at the Institute of Education, University of London has coordinated
systematic reviews in a range of school-based areas. Review teams based in university
departments in the UK conduct extensive searches of literature relevant to particular
research questions, and use explicit methods to identify what can be reliably claimed on
the basis of the chosen studies. This web-based repository also has a searchable thesaurus
and database. Box 3.1 contains a summary report for a recent EPPI review from the online
database which reports on learning skills.
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Box 2.1 EPPI
Review 1501R (Report) and 1501T (Technical Report)
Higgins, S., Baumfield, V. and Hall, E. (2007) ‘Learning skills and the development
of learning capabilities’, in Research Evidence in Education Library. London: EPPI-
Centre, Social Science Research Unit, Institute of Education, University of
London.
What do we want to know?
Which teaching approaches that aim to develop pupils’ learning capabilities
show evidence of the improved learning of pupils?
Who wants to know and why?
The key aim of this review was to support current policy initiatives: specifically,
to support the development of personalized learning by identifying teaching
and learning strategies which actively engage and challenge learners, and which
develop their ability to focus on their learning skills and their capacity to take
ownership of their own progress. A second aim was to identify evidence from
research which helps teachers to understand not just what works in terms of
specific teaching approaches in specific contexts but why different approaches
are successful. This can support teachers in making informed choices about
what is likely to be effective in their own context.
What did we find?
There is a tension between approaches to learning skills which emphasize
content – in terms of mastery of specific skills – and process – in terms of
locating skills within an overall understanding of learning approaches. In the
short term, the most effective means to improve performance where the
assessment focuses on content knowledge is likely to be direct instruction. In
the longer term, or where assessment focuses on conceptual understanding,
metacognitive or strategic approaches are likely to be more effective.
Effective approaches are those which explicitly develop the awareness of
learning strategies and techniques, particularly when these are targeted at the
metacognitive level. The characteristics of these approaches identified by the
review include:
• structured tasks which focus on specific and explicit strategies in the
subject context
• the capacity in lessons for more effective exchanges between the learner
and the teacher concerning the purpose of the activity
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• small group interactions promoting articulation about the use of learning
strategies mechanisms built into learning tasks to promote checking for
mutual understanding of learning goals by peers and with the teacher
• enhanced opportunities for the learner to receive diagnostic feedback
linked
• directly to the content of the task.
We can also identify some necessary conditions for these approaches to be
successful:
• The teacher needs to have a good understanding of the subject, of
different
• approaches to learning, and be sensitive to the demands of different types
of
• learners.
• Teachers should have a repertoire of practical tools and strategies to
guide the learner and enhance opportunities for feedback about learning.
• Both teachers and learners should have an orientation towards learning
characterized by a willingness to engage in dialogue and negotiation
regarding the intent and purpose of a particular teaching and learning
activity.
• The focus of learning should be on how to succeed through effort rather
than ability, and through the selection of appropriate strategies by the
learner.
How did we get these results?
From the electronic databases and full-text collections, we identified 1,379
citations. A total of 146 reports were obtained, of which 80 studies were
selected for inclusion in the review. The in-depth review focused on a
subgroup of 10 studies.
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MANAGING LITERATURE
Storing the literature you find
You must be organized and diligent when it comes to keeping references. It is a good
idea to set up a system to help you to track and catalogue the sources that you find
right from the start of your research project. Retaining and subsequently retrieving the
literature will be important at all stages of the process. The system you use will depend on
your personal choice. In the past, researchers used handwritten card indexes, but more
recently bibliographic software has become more readily available. There are a number of
widely used commercial packages that you may want to buy. EndNote® is used widely in
university departments and is a powerful database package which enables you to organize,
store and search references and abstracts of research literature. It can save you time
when writing papers or your thesis, allowing you to input citations directly from EndNote
into a Word document, and to create a bibliography without having to type out all the
references. You can also use it to access, search and download references directly from
online bibliographic databases or library catalogues.
Zotero is a free online package which also allows for the storage of bibliographic
information, user notes, and attachments of electronic documents or screen captures, and
which integrates with popular academic databases, pooling information related to articles
such as citation information and abstracts.
The larger databases, such as the BEI, AEI and ERIC, have a variety of options for saving
and transmitting search results to these commercial packages, which may be very useful.
Make sure that you can keep track of what you’ve found and keep your own record of
how you completed the searches and the literature that you found. The search terms
and combinations of terms that have been used for each individual database should be
documented as you may need to make these explicit later. Moreover, this will
also be useful if you want to replicate a search you have completed in one database in
another. Consequently, when you come to write up your results, you will be able to
show the systematic and thorough nature of your search.
Likewise, keep and file copies of relevant books, and, above all, find out what the
recommended referencing style is and use it from the start.
Keeping on top of reading
You will probably find lots of sources which will be quite rewarding and the tendency
will be to stash these away to be read later. However, this can be daunting and may put
you off reading all the material you find, so I would recommend that you sort through
all the references as you find them.
Try to develop efficient reading strategies – by this, I mean making good use of your
valuable time by avoiding reading irrelevant papers. In addition, try to develop effective
reading strategies, which means that when you subsequently set aside the time to read
the selected papers that you are successful in understanding what you read.
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Box 2.2
The layout of a journal article
Although the exact layout of peer-reviewed journal articles will be determined
by the author and the specific journal, most articles reporting on empirical
findings will adhere to the following structure:
1. Introduction/background: a statement concerning the context of the study,
a review of relevant literature and other research in the field, and the
identification of some area that has not yet been studied.
2. Purpose: the main research aims/questions addressed in the article, a
statement of what was studied. It can be in the form of a thesis statement
which makes a claim of some kind, but this is not always the case.
3. Programme description: brief details of the programme or intervention
under investigation (if relevant).
4. Sample: sample details, including the number of participants, geographical
location/type of setting, age and stage of education and other demographic
information pertinent to the study (e.g. gender, ability/attainment, ethnicity,
special educational needs).
5. Design and methods: the study design and methods, including dates of data
collection, sampling method, methods of data collection and analysis.
6. Results: the main findings in relation to the research aims/questions.
7. Discussion: the interpretation and evaluation of your findings, problems
encountered in carrying out the research, implications of the results obtained.
8. Conclusions: the main conclusions arising from the research, possible
applications and further research needed.
EFFICIENT READING
Read the abstract
The first thing to do is to read the abstract carefully. If the abstract is well constructed,
then this will give you a good idea of whether it is worth your while reading the whole
article. Reading the abstracts and discarding those that are not appropriate will reduce the
number of articles on the pile of things to be read or stored in your bibliographic
database.
Sometimes, however, the abstract is not very helpful, so if this is the case, try reading the
introduction, key findings or conclusions instead. These sections should give you enough
information for you to decide whether it is worth reading the whole article. Box 3.2
provides a simplified description of the basic structure of most empirical research articles.
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SELECTING ARTICLES FOR CAREFUL STUDY
Don’t try to read an academic journal article in the same way as you would a newspaper
report or novel. If you just start at the beginning and try to read through to the end, you
will get frustrated and may even get the wrong idea that the ideas are too complicated
for you to bother with. Most academic articles can’t be grasped in a single reading and you
may have to engage with them several times, but in different ways.
To quickly gain an overview, familiarize yourself with a chapter or article so that you
understand the structure for later note-taking by looking at summaries, headings,
subheadings, tables, diagrams and illustrations. Then read the first sentences of paragraphs
to see what they are about and to gauge if the material is useful or interesting, so that you
can decide whether just some sections are relevant or whether you need to read it all.
Effective reading
Reading at speed is fine for scanning and skim-reading, but is unlikely to work for reflective,
critical reading. The more you read, the faster you will become as you grow more familiar
with specialist vocabulary, academic language and reading about theories
and ideas.
Nonetheless, even if you have followed the advice given in the previous section, it is
likely that you will still have a large number of articles to read, so it would be a good idea
to have a systematic strategy for reading these.
• Sorting papers into categories – sort the articles into piles that are all related to each
strand of your research or sub-question. Alternatively, you might want to rank them in
order of importance, or even rank each pile.
• Note-taking – create a table before you start to read the papers, so that you can write
down notes as you read. Figure 3.3 gives an example of such a template and is the
structure used by Atkinson in the literature review referred to earlier in this chapter.
It is worthwhile spending time before you start creating a relevant straightforward
table for you to use as you read so that you can go back to these notes at a later time.
Make a note of pertinent quotations or extracts as you read, in case you want to use
these later. Your literature review ought to be an expression of your own thinking, not
a patchwork of borrowed ideas. Therefore it is good idea to plan therefore to invest
your research time in understanding your sources and integrating them into your own
thinking. Your note cards or note sheets will record only ideas that are relevant to your
focus on the topic; and they will mostly summarize rather than quote. Find your own
words for notes on sticky labels. Don’t ever write in the book itself.
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