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define questionnaires
list of written questions = done face to face , by post , over phone , on internet to find thoughts on particular topic
what’s the 2 types of questions
closed questions & open questions
whats open questions
produce qualitative data
no fixed range of answers
whats closed questions
produce quantitative data
fixed range of answers
whats a strength
easy to analyse data = closed questions are used= easier to draw conclusions = increases validity
gather info from lots ppl relatively quick= sent to lots= generalisation easily made
whats a weakness
may not answer truthfully= social desirability bias = reduces validity
may be unclear = difficult to answer questions = decreases validty