Questionnaire surveys are a type of quantitative research methods and is used to collect quantitative data for the sample of the group we wish to generalize to. They suit well to get an overview for a particular field, attitude or behavioral pattern. Telephone survey, online survey, mail survey, field survey, and face-to-face survey are all defined as a quantitative research design.

The online panel consists of Icelandic residents aged 18 and older who have agreed to participate in SSRI's online surveys.

It's possible to reach people easily and effectively by administering surveys online.

The institution has long experience overseeing data collection and analyzing data from longitudinal surveys.

It's possible to reach individuals by mixing methods of data collection: mail-, telephone- and/or web survey.

Telephone survey is a common method for collecting information from participants, and it usually gives good response rates.

In a mail survey an introduction letter and a questionnaire is sent by mail to individuals.

In face-to-face surveys an interviewer administers questions at the home of the individual or at the place of their choice.

Field surveys are implemented at the place that's suited for the research.
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