FRHD 3070 Lecture Notes - Lecture 8: Face Validity, Discriminant

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 3070
• Professor: John Dwyer

Document Summary

*homeless youth with pets are less likely to be depressed (a university of. The extent to which a measure reflects only desired construct, without contamination from other systematically-varying constructs. The notion that you get a group of experts, they look at your instruments at (cid:498)if it looks like a duck, walks like a duck, and quacks like a duck it"s probably a duck(cid:499) Whether your measure reflects all of the content that you"re interested in. Measures represent all content areas i. e. muscle dysmorphia: pharmacological use, supplement use, dietary behaviour, drive for body size, physique protection, exercise dependence. Criterion validity: concurrent: give measure and criterion at same time, predictive: give measure first, and then criterion at a later time. Give measure to 2 different groups who you know the results will probably differ (shows that the measure can differentiate between 2 different groups) Correlation between different measures of same construct.