4.1. Limitations
One possible limitation of the present study is that the interviews
were conducted via telephone. This issue should not be confounded
with the fact that the depression treatment was administered via a
smartphone application, since data collection is not necessarily done
best in the same administration format as the treatment. Due to the
telephone format, some of the personal alliance between interviewer
and participant might have been affected and important information
could potentially have been missed out . However, it
may also be seen as an advantage that the interviews were conducted
over the telephone, as implicit demands to be grateful for the therapy
received probably are less present when the interview is not face-to face. In fact, it has been reported that the lack of
eye contact facilitated the sharing of sensitive and important issues