extraneous + confounding variables

• What is counterbalancing in experimental design?

  Testing different participants in different orders
• What does the term 'tolerance' refer to in research?

  the ability to bear something
• What is a participant variable?

  It refers to differences between participants
• What are situational variables?

  Features of the experimental situation
• What is an experimenter variable?

  It relates to how an experimenter may affect a result
• What does social desirability refer to in research?

  It is the tendency of participants to respond in a manner that will be viewed favorably by others
• What is the 'screw you effect' in research?

  It is a response bias where participants act contrary to the expectations of the experimenter