HSCI 307 Lecture Notes - Lecture 8: Face Validity, Content Validity, Convergent Validity

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 307
• Professor: Denise Z.

Document Summary

Process of thinking through the various meanings of the concept. Development of specific research procedures that will result in empirical observations. Perfect reliability and validity are virtually impossible to achieve. "the ability of a measuring instrument to give consistent results on repeated trials" Inter-rater reliability: independent evaluations conducted by different individuals. Parallels forms reliability : ~ across indicators (diff. versions - same result) Internal consistency: assess the degree to which the items in the scale are correlated with one another. The accuracy we can place on the inferences we make about people based on their score from that scale. Convergent validity: used for multiple indicators based on the idea indicators of one construct will act alike or converge . Discriminant validity: used for multiple indicators based on the idea indicators of different constructs diverge . A test cannot be valid if it"s unreliable. Compare [verbal - written test] with [verbal - written test] - same concept.