Research methods

• Case study 


  Detailed study of single individual using many research methods
• content analysis 


  indirect observation of artifacts people produce
• Questionnaire eval


  + easy/ fast

  + - not face to face

  + can be replicated exactly
• structured interview eval 


  + face to face

  -interviewer bias

  -takes time
• unstructured interview eval 


  + face to face

  + can be repeated exactly

  -more training needed

  -takes time
• quasi experiment 


  no IV manipulated
• positive skew normal distribution 


  tail the right ( too easy )
• negative skew normal distribution

  tail to the left ( too hard )
• secondary data 


  data from previous studies
• type I error 


  false positive
• type II error 


  false negative
• nominal data 


  just categories
• ordinal data


  rank order - relative
• interval data 


  fixed units + equal distances
• stats test table 


  cook some curry man, with some un-ripe potatoes
• correlation definition 


  analysis of association between two continuous variables
• operationalising 


  putting variables in testable form