Controlled Experiments

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Controlled Experiments
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Tasks Scientific Method 1

• Deal with a practical problem
• Consider theoretical framework
• State lucid and testable hypothesis
• Identify small number of independent variables
• Carefully choose dependent variables
• Judiciously select subjects, assign them to groups

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Tasks Scientific Method 2

• Control for biasing factors
• Apply statistical methods to data analysis
• Resolve practical problem, refine theory, give
  advice to future researchers

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Keuze Evaluatiemethode

• stadium in design proces
• evaluatiestijl
• graad van objectiviteit
• type meetresultaten (kwalitatief vs.kwantitatief)
• type informatie (low-level vs. high-level)
• directheid van reactie
• mate van inmenging
• beschikbare middelen