Methodology of pedagogical research and evaluation:
7. Measurement techniques in pedagogical research, research tools, validity, reliability
Methodological Concept for Effectively Supporting Key Competencies Using the Foreign Language
ATCZ62 - CLIL as a Learning Strategy at the College
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üRESEARCH METHODS
üHave the properties: validity + reliability
üWithin each method, a specific research tool can be created
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üThe ability of reserarch tools what they have
üTypes: -  content
•                -  constructive
•                -  criteria (concurrent and predictive)
•                -  internal
•                -  external
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Validity

Reliability
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ØAccuracy and reliability of the research tool.
ØHow to determine the reliability of the research tool?
                Repeated measurements
• equivalent forms of research tool,
• internal consistency,
• consensus among judges.

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RESEARCH FILE
Are called research entities - the basic set (POPULATION).
§Random selection (draw, random number table)
§Stratified selection is a specific type of random selection - the base file is decomposed
according to an essential character.
As for the number of subgroups, this selection may be:
a. Proportional (it is used by agencies that identify eg citizens‚ election preferences,
b. Even.

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•Sample Range = n
•(E.g., n = 112)
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•Depends on:
§Required reliability,
§Required accuracy,
§Basic file variability.
•Big Pitfalls - Uncontrollable Variables.
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