The self-completion questionnaire is the
hallmark of quantitative survey research. Widely used with large numbers of patients/carers in different locations, it is a
powerful tool in the researcher’s toolkit.
Lending itself to the quantitative research
tradition, structured interviews typically have
far larger sample sizes than their qualitative
counterpart, the depth interview.
A rather more direct research instrument, the structured observation offers a unique insight into the participant’s world – not what they say or think but more reflective of behaviour.