research methods

• iv


  thing you change
• dv


  thing u measure
• difference between directional and non hypothesis


  d hypothesis predict direction results will go in

  non d hypothesis predictions dont state direction eg 'will be signicstant difference in ...'
• operationalise hypothesis


  SPECIFY
• extraneous variables


  extra variable that is not iv could effect dv eg lighting or phone calls etc
• how to control demand characteristics?


  deception/randomisation so pp isnt aware of aim
• investigator effect


  subtle cues or signals from investigator affecting performance of pps eg gestures or tension or tone
• how to control investigator effects?


  • double blind study= when both pp and researcher dont know what condition theyre in
• standardisation


  same experience for all pps but IV

  increases reliability so its consistent and repeatable