unit four: testing and individual deifferences (baron's 11, mods 31-33) Flashcards
francis galton
a pioneer in the study of human intelligence and testing, who initiated the use of surveys for collecting data and developed and applied statistics toward its analysis.
standardized test
the test items have been piloted on a similar population of people as those who are meant to take the test and that achievement norms have been established
standardized sample
those people taking the SAT on a particular testing date are fairly representative of the population of people taking the SAT in general.
psychometricians
(people who make tests) use the performance of the standardization sample om the experimental sections to choose items for future tests.
reliability
refers to the repeatability or consistency of the test as a means of measurement
ex: think of it as you take three trials of the SAT. you get a 1460, 1480, 1420. it is fair to say that the test is reliable because you scored similarly.
split-half reliability
involves randomly dividing a test into two different sections and then correlating people’s performances on the two halves. the closer the correlation coefficient is to +1, the greater the split half reliability of the test.
equivalent-form reliability
the correlation between performance on the different forms of the tests
test-retest reliability
refers to the correlation between a person’s score on one administration of the test with the same person’s score on a subsequent administration of the test.
valid test
when it measures what it is supposed to measure. also referred to as the accuracy of the test.
face-validity
refers to a superficial measure of accuracy.
ex: a test of cake-baking ability has a high face validity if you are looking for a chef but low face validity if you are in the market for a doctor.
content validity
content validity refers to how well a measure reflects the entire range of material it is supposed to be testing
criterion-related validity
tests may have two kinds of criterion related validity, concurrent and predictive.
concurrent validity
measures how much of a characteristic a person has now
ex: is that person a good chef now?
predictive validity
a measure of future performance
ex: does that person have the qualities that would enable him or her to be a good chef?
construct validity
is thought to be the most meaningful kind of validity.
aptitude tests
measure ability or potential
achievement tests
measures what one has learned or accomplished
speed tests
generally consists of large numbers of questions asked in a short amount of time
power test
is to gauge the difficulty level of problems an individual can solve. power tests consist of increasing difficulty levels.
group tests
group tests are administered to a large number of people at the same time
intelligence
defined as the ability to gather and use information n productive ways