Presentation is loading. Please wait.

Presentation is loading. Please wait.

Research Methodology Lecture No :19 (Experimental Design-Cont)

Published byNatalie Higgins Modified over 8 years ago

Similar presentations

Presentation on theme: "Research Methodology Lecture No :19 (Experimental Design-Cont)"— Presentation transcript:

1 Research Methodology Lecture No :19 (Experimental Design-Cont)

2 Recap Causal vs Correlation Field Study vs Field Experiment Control and Treatment Confounding variables –controllable un controllable Factors effecting Internal Validity –(History, Maturation, Testing effect, Instrument,selection Biases, Mortality..)

3 Objective Factors effecting External Validity When Experimental Design is necessary Different types of experimental Designs

4 When to Conduct Experimental Design

5 Control Group Experimental Group Expose (Treatment) Pretest score (Instrument) Post Test Score (Instrument) Difference

6 Pretest and Posttest (Problem Instrument Effect)

7 Posttest (Problem, Matching,Mortality Effect)

8 Pretest and Posttest Experimental and Control Group Randomized hence no effect of history, maturation, testing, instrument (Problem of Mortaility)

9

10 Different internal validity issues are taken care of such as Pretest and posttest of Group 2 allows to take care of history, maturation, instrumentation, regression. Group 3 remove the testing effect

11

12 Recap When to use experimental designs Pretest and Posttest Experimental Group Design Posttests only with Experimental and Control Group Pretest and Posttest Experimental and Control Group Design Solomon Four Group Design

13 When to have lab experiments and field experiments Issues of internal validity Issues of external validity Certain experimental design counter the effects of internal validity

Download ppt "Research Methodology Lecture No :19 (Experimental Design-Cont)"

Similar presentations

Pre-Experimental Designs

Pre-Experimental Designs
Experimental Design True Experimental Designs n Random assignment n Two comparison groups n Controls threats to internal validity n Strongest evidence.

Experimental Design True Experimental Designs n Random assignment n Two comparison groups n Controls threats to internal validity n Strongest evidence.
Types of Experimental Designs Non-experimental –Post-test only –Pre-post test Experimental –Pre & post-test with control group –Pre & multiple post-test.

Types of Experimental Designs Non-experimental –Post-test only –Pre-post test Experimental –Pre & post-test with control group –Pre & multiple post-test.
Research Design and Validity Threats

Research Design and Validity Threats
Experimentation. What experiments are not: Two commonsense uses of “experiment”: – any study – to “try something out” – …both of these understandings.

Experimentation. What experiments are not: Two commonsense uses of “experiment”: – any study – to “try something out” – …both of these understandings.
Types of Group Designs ____________ group design. The experiment compares groups that receive or _______________ the IV (control group) e.g., behavior.

Types of Group Designs ____________ group design. The experiment compares groups that receive or _______________ the IV (control group) e.g., behavior.
RESEARCH METHODS Lecture 35. EXPERIMENTAL RESEARCH [CONTINUED]

RESEARCH METHODS Lecture 35. EXPERIMENTAL RESEARCH [CONTINUED]
RESEARCH METHODS Lecture 34. EXPERIMENTAL RESEARCH.

RESEARCH METHODS Lecture 34. EXPERIMENTAL RESEARCH.
Experiments Explanatory research True experiments Experimental designs

Experiments Explanatory research True experiments Experimental designs
Integrating Technology in the ESL Classroom By: Lorraine Vazquez Fall’12/Spring ‘13 Dr. O’Conner-Petruso.

Integrating Technology in the ESL Classroom By: Lorraine Vazquez Fall’12/Spring ‘13 Dr. O’Conner-Petruso.
Experimental Research

Experimental Research
McGraw-Hill © 2006 The McGraw-Hill Companies, Inc. All rights reserved. Experimental Research Chapter Thirteen.

McGraw-Hill © 2006 The McGraw-Hill Companies, Inc. All rights reserved. Experimental Research Chapter Thirteen.
Problem identification Research questions Constructs & Variables Research design.

Problem identification Research questions Constructs & Variables Research design.
Experimental Research Take some action and observe its effects Take some action and observe its effects Extension of natural science to social science.

Experimental Research Take some action and observe its effects Take some action and observe its effects Extension of natural science to social science.
Research Tools and Techniques

Research Tools and Techniques
Experimental and Quasi-Experimental Designs

Experimental and Quasi-Experimental Designs
Types of Experiments & Research Designs UAPP 702: Research Design for Urban & Public Policy Based on notes from Steven W. Peuquet. Ph.D.

Types of Experiments & Research Designs UAPP 702: Research Design for Urban & Public Policy Based on notes from Steven W. Peuquet. Ph.D.
I want to test a wound treatment or educational program in my clinical setting with patient groups that are convenient or that already exist, How do I.

I want to test a wound treatment or educational program in my clinical setting with patient groups that are convenient or that already exist, How do I.
Learning Objectives 1 Copyright © 2002 South-Western/Thomson Learning Primary Data Collection: Experimentation CHAPTER eight.

Learning Objectives 1 Copyright © 2002 South-Western/Thomson Learning Primary Data Collection: Experimentation CHAPTER eight.
Modes of Observations (Research Designs) –Experiments –Survey Research –Field Research –Unobtrusive Research –Evaluation Research Each of these methods.

Modes of Observations (Research Designs) –Experiments –Survey Research –Field Research –Unobtrusive Research –Evaluation Research Each of these methods.

Similar presentations

Ads by Google