Table of Contents
- 1 When a test measures the variable or dimension it is supposed to measure it has?
- 2 What is the variable called that a researcher manipulates in an experiment?
- 3 How is reliability measured?
- 4 What is the relationship between validity and reliability of test?
- 5 What to consider when planning a measurement study?
- 6 When do you use measurement as a definition?
When a test measures the variable or dimension it is supposed to measure it has?
Validity is the extent to which the scores from a measure represent the variable they are intended to. But how do researchers make this judgment? We have already considered one factor that they take into account—reliability.
What is the variable called that a researcher manipulates in an experiment?
independent variable
The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment. For example, in an experiment looking at the effects of studying on test scores, studying would be the independent variable.
What kind of validity requires that a researcher create two different measures of the same variable?
Concurrent validity is the extent to which: a measure can distinguish between groups it should be able to distinguish between. two or more different measures for the same construct are related. one measure can be differentiated from another measure that it should not be related to.
In what type of study does a researcher studying individual subject in depth?
The most common type of descriptive research is the case study, which provides an in-depth analysis of a specific person, group, or phenomenon. While their findings cannot be generalized to the overall population, case studies can provide important information for future research.
How is reliability measured?
Reliability can be estimated by comparing different versions of the same measurement. Validity is harder to assess, but it can be estimated by comparing the results to other relevant data or theory. Methods of estimating reliability and validity are usually split up into different types.
What is the relationship between validity and reliability of test?
Reliability and validity are concepts used to evaluate the quality of research. They indicate how well a method, technique or test measures something. Reliability is about the consistency of a measure, and validity is about the accuracy of a measure.
What is the main characteristic that sets case studies apart from other types of studies?
What is the MAIN characteristic that sets case studies apart from other types of studies? the number of people studied.
What do you call the process of measuring a variable?
The process of measuring a variable requires a set of categories called a scale of measurement and a process that classifies each individual into one category. VI. Modalities of Measurement
What to consider when planning a measurement study?
Two major measurement issues to consider when planning a study: A. No one-to-one relationship b/tw variable and measurement B. Measurement chosen can influence the measurements and the interpretation of the variables II. Constructs and Operational Definitions
When do you use measurement as a definition?
The resulting measurements are used as a definition and a measurement of the construct. When doing research, don’t re-invent the wheel. So if we are investigating the effect of watching violent television programs on children’s aggressive behavior:
How is the reliability and validity of a measure established?
The reliability and validity of a measure is not established by any single study but by the pattern of results across multiple studies. The assessment of reliability and validity is an ongoing process.