COGS 14A Lecture Notes - Lecture 17: Repeated Measures Design, Demand Characteristics, Type I And Type Ii Errors
26 Feb 2017
School
Department
Course
Professor
Document Summary
Cogs 14a lecture 17 notes: introduction to within-groups designs 2/24/17. Collecting measures, to see if the variability between the groups is larger than the variability within the groups. Error will always be present in some form or another, this is called error variance. Different treatment of groups the two groups must go through the same experimental procedure (protocol) for it to be a valid comparison. Attempt to treat everyone the same way, so the only difference is the independent variable. Different experimenters might work with different experimental groups, imposing different levels of experimental bias. Possible to have systematic advantages depending on the set up of the room. Occurs when the instrument used to record the dependent variable changes in accuracy or sensitivity over time in reaction time studies, the software used may introduce slight variations in how time is recorded.
