PRINCIPLES OF LANGUAGE ASSESSMENT
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Reliability
Practicality
Validity
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How's this?
Enough expenses 
Prepared for appropriate time
Easy to manage
Coherent evaluation
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How's this?
It has to be consistent, dependable and have a good administration
Student related reliability
Rater reliability
Test administration reliability
Test reliability
The "true score" is going to be affected by: illness, fatigue, anxiety, etc.
Also, students can manage strategies for an efficient test
Caused by mistakes, subjectivity. Issues are not limited
Intra-rater
Inter-rater
Concurrences because of bad structure: criteria, score
2 or more scorers produce inconsistent scores
Outside noise
Photocopying
Room temperature
Light
Furniture
Factors:
Length of the test
Limited time (pressure)
How's this?
It refers to results factors: meaningful, useful, appropriate
Content-related evidence
Criterion-related evidence
Construct-related evidence
Define and measure the required performance
Direct testing
Indirect testing
Perform the target task
Perform a task related to the main one
The criteria has to be reached
Concurrent validity
Predictive validity
Explains observed results, theories or models in the universe