What is the purpose of a test?
Tests are used to make decisions.
What do psychometricians do?
Define:
constructs
theoretical ideas about a group of events related to behavior
Examples:
intelligence, happiness, honesty
Define norms as it relates to testing.
standards used to compare the scores between test takers
List three traits of a good test.
standardized
reliable
valid
Define standardization as it relates to testing.
Two-part test development process:
1) establishes test norms from test results of large sample
2) ensures test is administered and scored uniformly for everyone
Define reliability as it relates to testing.
consistency of results over time
What are the four types of reliability?
1) test-retest
2) split-half
3) equivalent (or alternate) form
4) interrater
Define:
test-retest reliability
If you take your French test once on Monday and again on Friday, your scores should be similar.
–
Define:
split-half reliability
consistency between scores on one half of the test and scores on the other half of the test
Example:
The scores on even-numbered questions should correlate with the scores on odd-numbered questions.
Define:
equivalent form reliability
Your score on the September SAT should be consistent with your score on the October SAT.
Define:
interrater reliability
consistency in scores given by different graders
Example:
If you pass your road test with one instructor, you should pass the test with any instructor.
Define validity as it relates to testing.
extent to which a test accurately measures what it is supposed to
What are the four types of validity?
1) face
2) content
3) construct
4) criterion-related
- predictive
Define:
face validity
content of the test reflects the material it is supposed to, according to the test takers
Example:
The AP Psych exam should reflect the material provided in the test outline.
Define:
content validity
content of the test reflects a wide range of the material it is supposed to, not just a small portion
Example:
Research on depression should examine the biological, behavioral, and cognitive aspects.
Define:
criterion-related validity
test scores correlate with other measures of the same material
Example:
Scores on the written driving test should correlate with scores on the road test.
Define:
predictive validity
test scores accurately predict a future result
Example:
High SAT scores should predict high grades in college.
Define:
construct validity
operational defintion of the tested variable agrees with its theoretical construct
Example:
The score on an IQ test should reflect one’s intelligence.
If a test is __________, someone will earn the same score no matter who scores it.
standardized
If a test is __________, someone will earn the same score no matter where, when, or how many times they take the test.
reliable
An algebra exam that contains questions about geography lacks __________.
validity
What is the difference between projective tests and inventory tests?
Projective tests, including the Rorschach Inkblot or TAT, allow for interpretation of ambiguous stimuli, while inventory-type tests require answers to standardized questions.
Define and give an example of:
performance test
IQ tests, SATs, AP exams, road test, classroom tests