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Chapter 15: Validity and Reliability, LIEW YIN WEN (75437) - Coggle Diagram
Chapter 15: Validity and Reliability
Validity
External validity
-the rigor with which the study is conducted
Definition:
the degree to which a study accurately reflects or assess the specific concept that the researcher is attempting to measure
Types of validity:
How to take care about validity issues in research?
Self-Report measures
Use control checks, such as asking a question in several different ways, to increase the validity of self-report claims
Face validity
concerned with how a measure or procedure appears
Construct validity
seeks agreement between a theoretical concept and a specific measuring device or procedure
Content validity
is based on the extent to which a measurement reflects the specific intended domain of content
Criterion related validity
referred to as instrumental validity, is used to demonstrate the accuracy of a measure or procedure by comparing it with another measure or procedure which has been demonstrated to be valid
Internal validity
-the rigor with which the study is conducted and process of verifying cause-and-effect relationships in research
Reliability
Forms of reliability
Test-retest reliability
compares results from an initial test with repeated measures and assumes that the true score being measured is the same over a short time interval.
Parallel-forms / Alternate-forms reliability
used to assess the consistency of the results of two similar types of test those are used to measure the same variable at the same time
Inter-rater / Inter-observer reliability
is the extent to which two or more individuals (coders or raters) agree
Test for homogeneity / Internal consistency
is the extent to which tests or procedures assess the same characteristic, skill or quality
Definition:
the degree to which research method produces stable and consistent results.
Inherent difficulties of achieving reliability
Diachronic reliability
refers to the stability of observations over time
Synchronic reliability
refers to the similarity of observations within the same time frame; it is not about the similarity of things observed
Quixotic reliability
refers to the situation where a single manner of observation consistently, yet erroneously, yields the same result
LIEW YIN WEN (75437)