Table 3.

Study type and research method.

Reference	Study type	Research method	Design process
[27]	Prototype development	Case study (design and creation)	User-centered design
[28]	Case report	Exploratory research	Design process was not clear (based on existing electronic memory aid systems and requisites of a memory aid)
[29]	Case report	Exploratory research	Design process was not clear (cognitive rehabilitation strategies for problem solving training were implemented with flash communication software)
[30]	Case report	Case study (design and creation)	Design process was not clear
[31]	Case report (method is not clear)	Exploratory research	Document review, collection of information about tasks, problems and needs, prototyping, evaluation, redesign, implementation. (incremental development)
[32]	Case report	Exploratory research	Not described
[33]	Case report	Exploratory research	Not described