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CHAPTER 7 METHODS Evaluation measures & findings - Coggle Diagram
CHAPTER 7 METHODS
Evaluation measures & findings
MEASUREMENT OF QUANTITATIVE VARIABLES (measure & classify symptoms)
Important because
Targeted treatments
Evaluate effectiveness therapy
Study findings relevance
depends on
Accuracy measures
HOW
Very clear
what you want to measure
Difficult
Psychological
constructs
= Processes that can't be seen directly
Operationalisation
= turn construct into
sthg measurable
Standardised test
Make your own method
Validity
Face validity
Common sense
(fear)
Construct validity
Compare w
existring measures
Internal validity
(causes & effect)
External validity
(generalisability)
Ecological validity
Diff study
/ real life
Population validity
Extrapolate entire
population
Reliability
Consistent
Dependable
Replication
Relation
Reliability = component
of validity
Reliable but not valid
Reliable and valid
Unreliable hence
not valid
EXAMPLE
Researching aphasia
unethical /
not possible
manipulate IV
Study naturally
occurring situation
Quasi-experimental design
STUDY Bakheit et al. (2007)
Standardised tests
Track course language therapy
Therapies appropriate
Identify specific
communication deficits
Study recovery language
w therapy 1st year
Standardised test
Western Aphasia Battery (WAB)
But does not evaluate
patient well-being
Aphasia affects
1/3 Stroke victims
STUDY Gaag et al. (2005)
Qualitative work
Self-esteem
General well-being
Holistic
Semièstructured
interviews
