3_Exp - Slide 1 Basics of Experimentation Slide 2 •...

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Unformatted text preview: Slide 1 Basics of Experimentation ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 2 • Variables and Control – Importance of replication e.g. study of alcohol consumption and test performance – Operational definition – IV and DV defined by the operations used to produce or measure them. – Operational definition crucial for replication and for communication of study results. Basics of Experimentation ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 3 Examples of operational definitions • Alcohol consumption – Bph (beers per hour) – cc injected at 10 percent alcohol – Total volume of liquid consumed at 1 sitting (may or may not have alcohol). • Intoxication – Number of steering wheel changes of direction while driving – Insults recorded on videotape during a conversion with a confederate – Confederate’s subjective assessment of intoxication – Reaction time in msec by stopwatch ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 4 Example study – aircrew training for beginning pilots • Half the pilots role played a flight with a confederate ATC. The ATC made 2 mistakes, one on the clearance, one a vector into a thunderstorm. • The other half played video games together and did other exercises. • All then flew together in a high fidelity simulator and were given problems in flight. • Two instructor pilots watched videotapes of crews in hifi sim and rated their performance. ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ ___________________________________ Slide 5 Desirable qualities for an Independent Variable • Relevant to research question. E.g,. Want to know effects of simulator time on pilot proficiency. What about simulator (experience, duration, etc. Manipulated ATC mistakes.) • Sampled appropriately. Either broad range...
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3_Exp - Slide 1 Basics of Experimentation Slide 2 •...

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