Chapter 2- How is Personality Studied and Assessed? Flashcards
What is a subjective assessment?
A measurement that relies on interpretation
What is the weakness/strength of subjective assessments?
weakness: diff observers can make diff judgements
strength: experts can gain valuable insights
What is reliability?
consistency of scores that are expected to be the same or similar
What is test-retest reliability?
instrument’s degree of consistency on different occasions
What is internal-consistency reliability?
correlation between 2 halves of a test
internal-consistency reliability is measure by what?
cronbach’s coefficient alpha- average of all possible split-half correlations
What is construct validity?
the extent of test truly measuring a construct
Construct validity involves what two factors?
construct validity and discriminant validity
What is construct validity?
measure is related to what it should be
What is discriminant validity?
measure is not related to what it should not be related to
What is criterion-related validity?
measure can predict important outcome criteria
What is content validity?
measure has items that represent the entire domain of the theoretical construct
What are items?
questions or statements in surveys
What are 5 things items should do?
be clear/relatively simple, discriminate among test takers, total score should have normal distribution, be intercorrelated (relate to each other), avoid ceiling/floor effect
T/F: ceiling/floor effect is when answers skew the scales
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What is an objective assessment?
measurement depends on measuring observations that are quantifiable