ways to deal with research issues

• randomisation

  • more than one condition- ppts are randomly allocated
  • recalling a word list- words in random order

  helps control investigator effects
• standardisation

  • same formalised procedures and instructions for all ppts
  • ensures procedure doesn’t create extraneous variables
  • memory word lists should be the same for all ppts
• single-blind trials

  • the ppt doesn’t know which experimental condition they’re in
  • eg. weather they’re taking the actual drug or the placebo
• double-blind trials

  • ppt or researcher doesn’t know which group the ppt is in