PAPI (Pen and Paper Personal Interviewing)
 

 CAPI (Computer Assisted Personal Interviewing)
 

 CATI (Computer Assisted Telephone Interviewing)
 

 Online Research – CAWI (Computer Assisted Web Research)


 Mobile Research – CAMI (Computer Assisted Mobile Research)
 

 Postal Surveys
 

 Desk Research
 

 Panel Research
 

Mystery Shopping
 

Mystery Employee