PSY3041 Lecture Notes - Lecture 2: Discriminant, Psychopathy, Content Validity

• School: Monash University
• Department: Health Sciences - Psychology
• Course: PSY3041
• Professor: jake hoskin

Document Summary

The degree to which a test tool provides consistent results. A test is considered reliable when it produces the same results, again and again, when measuring the same thing. E. g. , you are feeling unwell and go to see your gp. Gp orders a blood test, when your results come back they suggest that you have a vitamin d deficiency, and everything else is within normal limits. The doctor prescribes vitamin d supplements which you immediately start taking as prescribed. After few weeks you do test again and your vitamin d has reduced. Stability over time central problem is the interpretation of individual score changes when a test is administered on more than one occasion. Internal consistency the extent to which a psychological test is homogenous or heterogeneous. Can be broadly understood as the extent to which a test measures the construct it is intended to measure.