GENERAL

• WHAT ARE EXTRANEOUS VARIABLES?

  variables that must be controlled
• WHAT ARE CONFOUNDING VARIABLES?

  variables that affect all members of one condition
• WHAT ARE THE TYPES OF EXTRANEOUS AND CONFOUNDING VARIABLES?

  • situational variables
  • participant variables
  • investigator effects
  • social desirability
  • Hawthorne effect
  • demand characteristics
  • order effects
• HOW TO REMEMBER THE TYPES OF EXTRANEOUS AND CONFOUNDING VARIABLES?

  DO SPISH