To understand the traditional definition of construct validity, it is first necessary to understand what a construct is. A construct, or psychological construct as it is also called, is an attribute, proficiency, ability, or skill that happens in the human brain and is defined by established theories. For example, "overall English language proficiency" is a construct. It exists in theory and has been observed to exist in practice.
Construct validity has traditionally been defined as the experimental demonstration that a test is measuring the construct it claims to be measuring. Such an experiment could take the form of a differential-groups study, wherein the performances on the test are compared for two groups: one that has the construct and one that does not have the construct. If the group with the construct performs better than the group without the construct, that result is said to provide evidence of the construct validity of the test. An alternative strategy is called an intervention study, wherein a group that is weak in the construct is measured using the test, then taught the construct, and measured again. If a non-trivial difference is found between the pretest and posttest, that difference can be said to support the construct validity of the test. Numerous other strategies can be used to study the construct validity of a test, but more about that later.
To understand the traditional definition of construct validity, it is first necessary to understand what a construct is. A construct, or psychological construct as it is also called, is an attribute, proficiency, ability, or skill that happens in the human brain and is defined by established theories. For example, "overall English language proficiency" is a construct. It exists in theory and has been observed to exist in practice.
Construct validity has traditionally been defined as the experimental demonstration that a test is measuring the construct it claims to be measuring. Such an experiment could take the form of a differential-groups study, wherein the performances on the test are compared for two groups: one that has the construct and one that does not have the construct. If the group with the construct performs better than the group without the construct, that result is said to provide evidence of the construct validity of the test. An alternative strategy is called an intervention study, wherein a group that is weak in the construct is measured using the test, then taught the construct, and measured again. If a non-trivial difference is found between the pretest and posttest, that difference can be said to support the construct validity of the test. Numerous other strategies can be used to study the construct validity of a test, but more about that later.
การแปล กรุณารอสักครู่..
