Research bias and investigator effects

• Why might a researcher give cues to participants during a study?

  To indicate how they should respond
• What can a researcher alter to give cues to participants?

  Procedure or language
• What is a method to overcome research bias and investigator effects?

  • Recruit assistants to run the study
  • Ensure assistants are unaware of the study's aim and hypothesis
  • Prevent assistants from giving clues to participants
• What is the term for a procedure where assistants run a study without knowing its aim?

  Double blind procedure
• How does a double blind procedure help in research studies?

  It prevents bias from both researchers and participants