PPT-Experimental Design Making your experiment more valid and more efficient

So the basic experimental procedure in social science is Gathering of a subject pool and then random assignment to conditions Note the sample is not random but once you have a subject pool you flip a coin etc to determine which subjects receive which . Rosemarie Nagel . Universitat Pompeu Fabra. , . ICREA, BGSE . April 2012 . Course content. (in red: replication of experiment). Week 1. Introduction . guessing game. Week 2. Bargaining/public goods . Oberkampf. and Roy provide guidelines for validation experiments. This lecture deals with their applications to the. Paper helicopter. CCMT shock tube validation of . Rocflu. Explosive solid particle dispersal. Analysis of Biological Data. Ryan McEwan and Julia Chapman. Department of Biology. University of Dayton. ryan.mcewan@udayton.edu. Experimental design is like a game a chess, . you must . think. first, before you move…. The purpose of this PowerPoint is to present strategies to aid students at the high school and introductory college levels to:. Design experiments. Write procedures. Construct tables and graphs. Generate ideas. . Dr. Richy Hetherington. and Dr. . Kim Pearce. Today’s Session. Start a live experiment. The scientific method . in . context. You are the . information generation. Planning . experiments. Replication. Researcher manipulates the independent variable (usually to create groups) and then compares the groups in terms of their scores on the dependent variable (outcome measure) while keeping all other variables constant through direct experimental control or randomization- If score on the dependent variable are different then the researcher can conclude that the difference was due to the difference between groups and no other cause (and the experiment will have internal validity) . BY: ERIC IGABE. 14.02.2015. Efficient . estimator and limit of experiment. 1. 14.02.2015. Efficient estimator and limit of experiment. 2. Outline . Introduction. Efficiency estimator. Locally asymptotical normality. (Mr. Staeger as a young scientist). Key Concepts and Vocabulary. Key Concepts:. How do we learn new things in science?. What are the steps of the scientific method?. What are the variables in an experiment?. 1) Observational study - observe outcomes without imposing any treatment. 2) Experiment - actively impose some treatment in order to observe the response. Do Coke Experiment. I’ve developed a new rabbit food, Hippity Hop.. Hariri. Introduction. Good experimental design allows you to:. Isolate effects of each input variable. Determine effects due to interactions of input variables. Determine magnitude of experimental error. So, the basic experimental procedure in social science is:. Gathering of a subject pool and then . random assignment to conditions. Note: the . sample is not random. , but once you have a subject pool you flip a coin, etc. to determine which subjects receive which . Experiments. After this section, you should be able to…. DISTINGUISH observational studies from experiments. DESCRIBE the language of experiments. APPLY the three principles of experimental design. Chapter 13. Objectives:. Observational study. Retrospective study. Prospective study. Experiment. Experimental units . treatment . response. Factor . Level. Principles of experimental design. Statistically significant. Observational Studies:. * researchers . do not. impose a treatment on the exp. units. . Simply observe. Example: a survey. * Cannot be used to show cause and effect relationships.. 2 types of studies: .