PSY 3001W Lecture Notes - Lecture 10: Construct Validity, Face Validity, Discriminant Validity
Document Summary
Reliability is not the same as correctness , reliability vs. validity. [construct: an idea developed to permit categorization and description of some directly observable behavior, psychological constructs are not directly observable, must be operationally defined. When we think we are measuring the construct, are we really measuring that construct, or are we really measuring some other, previously-established construct: face validity. [example construct: body temperature : measured with a thermometer, thermometer is sensitive to heat at a particular location. When we read the temperature, we are really reading the level of mercury: face validity. [new construct: brain activity : measured by placing electrodes on scalp, when we measure body temperature and brain activity at the same time, they are not correlated. Therefore, brain activity is different from body temperature and so it is meaningful to talk about these two different constructs. [new construct: life satisfaction : life satisfaction survey 1 ls1, life satisfaction survey 2 ls2, ls1.
