PPT-External validity Dr. John Jerrim

UCL Institute of Education Aims To understand what external validity is and why it is important The difference between sample and population average treatment effects SATE and PATE The assumptions under which estimates of SATE PATE. There are growing concerns that this may have negative implications for equality of opportunity and the extent to which social disadvantage is transmitted across generations It is widely believed that providing greater educational opportunities to d based management:. What is the best available evidence?. 5-step approach. EBMgt is a 5-step approach. Formulate an answerable question (PICOC). Search for the best available evidence. . Critically . to . what populations do our study results apply. ? . Epidemiology . matters: a new introduction to methodological foundations. Chapter . 12. Seven steps. Define . the population of . interest. Conceptualize . Environmental issues. Naturally occurring variables: usual with several groups of people. Noise. Temperature. Light. Time of day. Seating arrangements. Artificiality:. Classroom or Office are not “real world” or “natural”. Value-Added systems. LaFollette. School of Public Affairs & value-added research center, university of Wisconsin-Madison. Robert Meyer, Research Professor and Director. VARC Partner Districts and States. Internal Validity. Construct Validity. External Validity. * In the context of a research study, i.e., not measurement validity.. Validity*. Generally relevant only to studies with . causal relationships. Linthorne. and . Weetman. Corey, Betsy, Maria, Steve, Eric. Purpose. This study examined the effect of run-up velocity on the peak height achieved by the athlete in the pole vault and on the corresponding changes in the athlete’s kinematics and energy exchanges.. The validity of research findings:. . . The Basics of . R. esearch Design. 2/15/10. Internal Validity. External Validity. “Ecological” Validity. The Research flow. What is being studied? . What is the . CPSC 481: HCI I. Fall . 2014. 1. Anthony Tang. Learning Objectives. By the end of this lecture, you should be able to:. » Identify and label several types of biases as they relate to internal validity in experiments. It’s my favourite part of the syllabus…honest. Would a teacher lie to you?. I can reliably predict that you’re all yawning already. Y. Right, own up. Who wrote that? Detention for a week! Yes, we know it seems boring.... Michael . Woolcock. Development Research Group, World Bank. Kennedy School of Government, Harvard University. mwoolcock@worldbank.org. . InterAction. May 13, . 2013. Overview. Background. The art, science and politics of evaluation. Ottusch. . H615. October 11, 2013. What is external validity?. “Concerns inferences about the extent to which a causal relationship holds over variations in persons, settings, treatments, and outcomes.” (p. 83). Instrumentation: Validity Measuring Caring in Nursing Validity: Defined Extent to which instrument reflects abstract construct being examined; measures what it is supposed to measure Domain or Universe of Construct Case Study Research Methods Case Study Case Study Method One or few individuals, groups, organizations, or events In-depth study Can be used in clinical research to diagnosis and treat Example Examples