1 / 37

Types of Research Design

Types of Research Design. 10/8/2013. Readings. Chapter 4 Research Design and the Logic of Control (Pollock). Allan W. Hook Endowed Wild Basin Creative Research Fund.

tuan
Télécharger la présentation

Types of Research Design

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Types of Research Design 10/8/2013

  2. Readings • Chapter 4 Research Design and the Logic of Control (Pollock)

  3. Allan W. Hook Endowed Wild Basin Creative Research Fund • The purpose of this Research Fund is to provide support for scholarly research projects conducted at the Wild Basin Creative Research Center or elsewhere on the Balcones Canyonland’s Preserve system. • Fellowships are intended to cover costs associated with independent research projects proposed and written by student applicants and undertaken with the supervision of a faculty or staff member. • Fellowships will be awarded in amounts up to $1,000 per student. For the 2013/2014 funding cycle, the deadline will be December 2, 2013 by 5:00 p.m. Awards will be announced no later than February 15, 2014. • See the Wild Basin Creative Research Center (www.wildbasin.org) for details including specific guidelines and an application form.

  4. Opportunities to discuss course content

  5. Office Hours For the Week • When • Wednesday 10-12 • Thursday 8/12 • And by appointment

  6. Course Learning Objectives • First, students will learn the research methods commonly used in behavioral sciences • Students will learn the basics of research design and be able to critically analyze the advantages and disadvantages of different types of design. 

  7. Research Design • Internal Validity? • External Validity?

  8. Types of Designs • Experimental (mirror the natural sciences • Non-experimental- sacrifice internal for external

  9. Classic Experimental Design

  10. The Classic Experimental Design • This design is the best way to demonstrate causality • You have total control • This has 4 key steps

  11. Step 1- Random Selection and Assignment • Test Subjects are selected at random and assigned to an experimental or control group • You cannot pick people who you want to be in the experiment • You have two equal groups of participants • This ensures an even baseline between your groups (no one group is meaningfully different from the other)

  12. Step 2- A pre-test is given to both groups • A Pretest measuring the Dependent variable is given to each group

  13. Step 3- The introduction of the independent variable • The experimental group receives the independent variable (test stimulus) and the control group does not

  14. Step 4- A Post Test is Given • The researcher measures the dependent variable for both groups after the experimental stimulus is given.

  15. What You want to show R= Random assignment O 1 & O3 Observation for the two groups at time 1 X =Introduction of the treatment for the experimental group O2 & O4 Observation of the two groups at time

  16. If Done properly • You can • Compare Pre Test against Post-test • Compare Control group against Test Group • Attribute Differences to the Independent Variable

  17. This type of design is common • In the natural sciences • In Psychology • In Food Tests

  18. It is rare in Social Sciences • Legal and Ethical Problems • Historical Problems • Reactivity Problems.

  19. Missing at Least one step Quasi-Experimental Design

  20. Randomized Post-Test • What is it Missing? • Advantages • Disadvantages

  21. The Comparison group-pretest-post test • What is it Missing? • Advantages • Disadvantages

  22. St. Edward’s Peers

  23. Austin’s Peers

  24. Non-Experimental Design

  25. What it entails • Missing more than 1 part of classic design • Sacrifices internal validity for real-life (external) application

  26. Single Post Test • What is missing? • Problems? • Exit Exams (selection effect bias as well)

  27. Single Group Pretest-Post test • What is it missing • Problems • Where do we see it?

  28. Observational studies

  29. What are they? • you observe outcomes that occur under natural conditions and try to isolate variables that may have caused these outcomes • We do this all the time

  30. Cross-Sectional Design • What is it? • An Example • Limits on Cross Section

  31. Same President, Different Results

  32. A Cross-Section Must be Representative

  33. Time-Series Design • Cross-Sectional design over time • Problems with time series design

  34. RCP tries for Content Validity

  35. Panel Data • A Special Kind of Time Series • Expensive and difficult to collect • You can track individual change…

  36. Field Research • Observations in a natural setting • People do not like to be followed (reactivity), other things are less reactive

  37. Case Study Design • What is it? • N=1 (one unit in your study) • Problems

More Related