CMNS 260 Lecture Notes - Lecture 5: Likert Scale, Consistency, Face Validity

• School: Simon Fraser University
• Department: Communication
• Course: CMNS 260
• Professor: Frederik Lesage

Document Summary

Continuous and discrete variable: nominal: based on categories, ordinal: rank ordered, different categories, interval: there"s no absolute zero, ratio variables: different categories, ranked in order, amount of difference between categories. The way in which you measure variables can determine how reliable and valid your research is. Reliability: dependability or consistency of the measure of a variable. Equivalence: multiple indicators can be used to observe same phenomenon. Intercoder: the type of equivalence reliability (researchers uses measures the same way in making observations: ensuring reliability. Validity: refers to truth that can be applied to the logical tightness of experimental design, the ability to generalize findings outside a study, the quality of measurement, and the proper use of procedures: forms of measurement validity. Face validity: makes sense as a measure of a construct in the judgment of others. Content validity: relies on some independent, outside verification. Criterion validity: relies on some independent, outside verification.