1. Chapter 2 Ethics and Validity
PowerPoint presentation to accompany Research Design Explained 6th edition;
©2007 Mark Mitchell & Janina Jolley

2. Overview
Questions about Applying Techniques from Physical Sciences to Psychology
Validity Questions
Internal Validity Questions
Construct Validity Questions
External Validity Questions
Ethical Questions
PowerPoint presentation to accompany Research Design Explained 6th edition;
© Mark Mitchell & Janina Jolley

3. Internal Validity Questions:
Did the Treatment Cause a Change in Behavior?
PowerPoint presentation to accompany Research Design Explained 6th edition;
©2007 Mark Mitchell & Janina Jolley

4. Construct Validity Questions:
Can We Make the Leap from the Physical World to the Mental World?
3 Follow-up Questions*
PowerPoint presentation to accompany Research Design Explained 6th edition;
©2007 Mark Mitchell & Janina Jolley

5. 3 Key Construct Validity Questions
1. What does the measure really measure?
2. What does the manipulation really manipulate?
3. Is the participant’s behavior genuine or an act?
PowerPoint presentation to accompany Research Design Explained 6th edition;
© Mark Mitchell & Janina Jolley

6. External Validity Questions: Can the Results be Generalized?
Can the results be generalized to other participants?
Can the results be generalized to other settings?
PowerPoint presentation to accompany Research Design Explained 6th edition;
© Mark Mitchell & Janina Jolley

7. Ethical Questions: Should the Study Be Conducted?
APA ethical code: Weighing potential benefits versus potential harm
Don’t make ethical decisions by yourself
Ethics committees
Me!
PowerPoint presentation to accompany Research Design Explained 6th edition;
© Mark Mitchell & Janina Jolley

8. Concluding Remarks Psychological science must be concerned about:
Ethics (for both non-human and human animals)
Internal validity
External validity
Construct validity
PowerPoint presentation to accompany Research Design Explained 6th edition;
© Mark Mitchell & Janina Jolley