Models of Psychometrics and SamplingAs the science of test theory and testing, psychometrics has two models, each of which is supported by a different set of assumptions. Based on a researcher's goals

Models of Psychometrics and Sampling

As the science of test theory and testing, psychometrics has two models, each of which is supported by a different set of assumptions. Based on a researcher's goals and objectives, the choice of model depends on the consideration of many factors. Likewise, selection of a sampling technique is part of the planning process.

Tasks:

In a minimum of 200 words, respond to the following:

• Compare and contrast the two models of psychometrics (trait and function) including the settings in which each would be best utilized.
• According to Sue and Ritter (2013), what are some of the considerations in choosing a sampling technique for Internet and mobile surveys? Accordingly, how would you determine a sample size to yield a lower margin of error?