'Random assignment' diaporamas de présentation

Advanced topics in study design III: Methods to improve study accuracy and precision of estimates

Advanced topics in study design III: Methods to improve study accuracy and precision of estimates. John Witte. Overview. Validity and Precision Bias Confounding Selection Bias Information Bias Improving Study Accuracy Matching Statistical Testing and Estimation.

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Testing the Causal Effects of Social Capital: Design for a Cluster-Randomized Field Trial

773 views • 47 slides

Experiments

Experiments. Pre and Post condition. Classic experimental design. Random assignment to control and treatment conditions Why random assignment and control groups?. Classic experimental design. Random assignment helps with internal validity Some threats to internal validity:

762 views • 44 slides

Discriminant Function Analysis

Discriminant Function Analysis. Basics Psy524 Andrew Ainsworth. Basics. Used to predict group membership from a set of continuous predictors

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Fundamentals of Quantitative Research Design

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Expander Flows, Graph Spectra and Graph Separators

Expander Flows, Graph Spectra and Graph Separators. Umesh Vazirani U.C. Berkeley. Based on joint work with Khandekar and Rao and with Orrechia, Schulman and Vishnoi. Graph Separators. S. T. Sparsest Cut/Edge Expansion: . c-Balanced Separator: . Applications. Clustering

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A Universal Medication Schedule to promote patient understanding and use

A Universal Medication Schedule to promote patient understanding and use. Michael Wolf, PhD MPH Northwestern University Terry Davis, PhD Louisiana State University Health Sciences Center-Shreveport Ruth Parker, MD Emory University Will Shrank, MD Harvard Medical School . Acknowledgements.

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Simulation of Uniform Distribution on Surfaces

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The Effects of Focused Attention and Varied Peripheral and Central Changes on Change Blindness and Change Detection

The Effects of Focused Attention and Varied Peripheral and Central Changes on Change Blindness and Change Detection. Teal Maxwell Emily Welch Naomi Janett Jessica Padgett. Defining Terms. Change Blindness Change Detection Focused Attention. Previous Research Type of Change.

944 views • 29 slides

Get Out the Vote: Campaign Strategy

Get Out the Vote: Campaign Strategy. Two more points about turnout!. What predicts variation in turnout from election to election in the US? What predicts cross-national variation in turnout?. In any given election, why might more people turn out?. High media coverage Significant office

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Chapter 1

Chapter 1. The Field of Social Psychology: How We Think about and Interact with Others. This multimedia product and its contents are protected under copyright law. The following are prohibited by law: any public performance or display, including transmission of any image over a network;

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PSY 111AR Introduction to Psychology

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Econometric Approaches to Causal Inference: Difference-in-Differences and Instrumental Variables

Econometric Approaches to Causal Inference: Difference-in-Differences and Instrumental Variables. Graduate Methods Master Class Department of Government, Harvard University February 25, 2005. Overview: diff-in-diffs and IV. Data Randomized experiment Observational data

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Week 1: Introduction to Social Psychology

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Research and Evaluation: The Basics A Workshop for Educators Session 519 Saturday, June 30, 2007

Research and Evaluation: The Basics A Workshop for Educators Session 519 Saturday, June 30, 2007. Rita DeMaria, Ph.D. Scott Gardner, Ph.D. Research. Careful, thorough, patient, systematic investigation undertaken to establish facts or principles in field of study Use of the scientific method

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Social Support vs. Loneliness

Deadly Corvettes. Recent statistics indicated that the Corvette sports car is the most dangerous vehicle on Canadian highways as measured by driver deaths. ...

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Questions

Questions. Is Exam 2 going to be cumulative or will it just cover the second part of the information? Are cause-and-effect relationships the same as causal relationships? Can you give a clear example of the difference between confounding variables and extraneous variables?

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CHAPTER 5

CHAPTER 5. RESEARCH DESIGN. Important Topics of this Chapter. Types of research designs. Methods of conducting different research designs. Experimental research process. Test marketing and types of test markets. Research Design. Classifications of Research Designs.

458 views • 18 slides

Random sampling and probability

Random sampling and probability. Introduction to inferential statistics. Inferential statistics. Review definition: Making a decision about what you do not know -- the population characteristics -- based on what you do know -- the sample data. Two purposes of inferential statistics:

488 views • 16 slides