Random Factors

• These are factors that can affect the outcome that we do not design, and cannot control
• Two common types
• Participant
  • People differ. Some people are very strict. Some people accept everything.
• Item
  • Some sentences are weird with monkeys. Some situations are hard to draw so the picture is a bit odd.
• When we analyze the data we have to take into account that there will be variation present because of these random factors.