An open question is a question where a respondent can write an individual answer and is given space to do so.
The two types of survey method are interview and questionnaire.
Closed questions can only be answered "yes" or "no".
Unambiguous means the meaning is unclear.
The main advantage of using questionnaires is that they are cheap to produce.
Ecological validity means protecting the environment.
In a structured interview all the questions are pre-set.
Unstructured interviews have no set questions.
The disadvantages of the interview method are similar to those of the questionnaire method.
The interviewee is the person who asks the questions in the interview.
