SOCI 217 Lecture Notes - Lecture 14: Artificiality, Scientific Control, Dependent And Independent Variables
Week 6- experiments
example
• Does taking public transit make you sick?
• IV: taking public transit, yes or no
• ID: getting sick
• Measuring sickness
o Checking temperature
• Group 1
o Pretest
▪ Take temperature
o Stimulus
▪ Taking transit
o Posttest
▪ Check temperature
• Group 2
o Pretest
▪ Check temperature
o Timulus
▪ No transit
o Posttest
▪ Check temperature
• Group 3
o No pretest
o Stimulus
▪ Taking transit
o Posttest
▪ Check temperature
• Group 4
o No pretest
o Stimulus
▪ No transit
o Posttest
▪ Check temperature
Variations on experimental design
• No pretest
o Proper randomization should ensure that subjects are initially comparable on the
dependent variable
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