PSYC 1002 Lecture Notes - Intellectual Disability, Construct Validity, Content Validity
17 Feb 2014
School
Department
Course
Professor
Document Summary
In order to research a variable, you must first define it. Iq is defined by memory, problem solving, reading, etc: we have to assign an operational definition to the variable we are researching, ex. How do we operationally define intelligence: there are a few key concepts in psychological testing, standardization. This can be bad because since all people learn differently, the test scores may not clearly represent a person"s intelligence. However, standardization makes finding averages (test norms) and patterns a lot easier: reliability. A test is reliable if it has consistent results. Test re-test reliability this means that if the same test is administered a week later, the participant will achieve the same score: validity. I) content validity: whether or not the study is measuring what it should. Ii) criterion related validity: subjects who perform well on one test should perform well on another. Certain scores on one test correlate to scores/performance in a related test/field.
