Longitudinal and single-session studies

In a single-session study, the participant is only required to participate once in order to complete the study, while a longitudinal study is run over a longer period of time and includes repeated contact with the participants during this time. This time period can be anything from a couple of days to weeks. The study participants are asked to use a product over that period of time. If the aim of the longitudinal study is that the participants record their behavior around and with the interface, this type of study is called a diary study.

Both longitudinal and single-session studies are compatible with remote methodologies.