Key Concepts 
of Reseach Methods
of Reseach MethodsSurvey research Leading questions
Survey designs Open-ended items
Cross-sectional designs Census
Longitual designs Telephone interviews
Trend study Selected-response items
Cohort study Pilot run
Panel study Likert Scale Cover letter Follower-ups Response rate
Ex post facto research Telephone interviews Interrater relibility
Casual-comparative research Intratater relibility Branching items
Correlation research Community reseach Status surveys