Testing and Assessment Components

This discussion should be answered based on your concentration field or based on your general interest in a psychological disorder.
Is it possible for all raters to score the same 100% all of the time on a human judgement rating scale?
Describe at least two of the advantages and disadvantages associated with behavioral observation techniques with examples.
Discuss inter-rater reliability and inconsistencies with this technique.
Explain the observed test score and random, systematic, standard, and other sources of error that are inherent in testing measures.
Provide an example on how systematic error (which is considered error that is typically constant and proportional to what is presumed to be the true value of the variable being measured) will not affect score consistency.
An example of systematic error could be a scoring timer that chimes at 62 seconds instead of 60 seconds — making the timer off by 2 seconds each time it is used, which would be a constant if this timer were used for all subjects.
Lastly, explain the differences between homogeneity (how a test measures a single trait) and heterogeneity (how a test measures several traits or different factors) for any assessment tests that you reviewed.

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