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5.3 Combining information from
different sources
You may have noticed
from the Chilean Champion
Teachers’ stories we’ve considered in this chapter
(Andrea’s, Mauro’s and Teresa’s), that they all collected
information from more than one source. For example,
Mauro recorded one of his lessons, got a colleague to
observe him and also gave a questionnaire to his students.
Combining different sources of information has a number
of advantages.
One advantage is that it builds up a more complete picture
of a situation than just collecting data from one source.
For example, you can use a questionnaire to find out the
main difficulty your
learners have with writing, but this may
not help you to understand why this is difficult for them.
Interviewing learners can help with this understanding,
since you can ask them to expand on their answers, but
without the questionnaire, you wouldn’t have known how
many students have this difficulty in the first place!
Another advantage is that collecting
different types of
information can help you to confirm what you see from one
source, making your research more reliable. For example,
Mauro’s colleague noticed that most of his learners did
activities best when working in pairs. When Mauro watched
the
video recording of his lesson, he also noticed that they
seemed to be interacting effectively and were helping
each other when they worked in pairs, while in their
questionnaire answers, most of
his students said that they
did prefer to work in pairs. If you get information from
only one source, it can be useful to help you understand
a situation but it may not be reliable,
in other words you
may not be able to depend on it to make conclusions.
The process of obtaining data from different sources –
in order to confirm understanding of a situation – is called
‘triangulation’. To put it in simple terms, it involves looking
at a problem from two or more different points of view.
Task 5.7 @
There are sometimes advantages to collecting different
types of data in a specific order. Let’s use an example to
make this clear:
You have noticed that about half your students either don’t
do
their homework, or do it badly, and you want to find out
more to explore this situation. As this is not something that
happens in the classroom, collecting the data directly (e.g.
by observing them) is not possible,
so you have decided to
choose the following three methods of data collection:
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