Developing and validating an instrument

In a review of 748 research studies conducted in agricultural and Extension education, Radhakrishna, Leite, and Baggett (2003) found that 64% used questionnaires.

They also found that a third of the studies reviewed did not report procedures for establishing validity (31%) or reliability (33%).

It is, therefore, important to develop new instruments and scales, which are directly targeted to these new interfaces and applications.

While improvements are possible, the instrument exhibits excellent psychometric properties.

For the revised assessment resulting from the experts' feedback, cognitive interviews were conducted with nine college students using think-aloud protocols, whereby the students verbalized their reasoning as they reached an answer.

A pilot-test administered in a classroom provided preliminary information of the psychometric properties of the assessment.

The purpose of this study was to develop and validate an assessment to measure college students' inferential reasoning in statistics.

This proposed assessment aims to help statistics educators guide and monitor students' developing ideas of statistical inference.


Leave a Reply

  1. Latvia video chat porn 26-May-2017 23:44

    The Face-to-Face experience: As an IJL client, we guarantee you will go out on dates. It's Just Lunch recognizes that each of our clients is unique, and that their attributes, experiences and life goals shape the type of relationship they are looking for.

  2. Free porn greek chat 24-Mar-2017 01:57

    The end result would be a profile that read like a good article or book jacket instead of a dating ad, and when someone reached the end of it, they’d want to read more and contact the person.