Background Mobile device-based ecological momentary assessment (mobile-EMA) is
increasingly used to collect participants' data in real-time and in context. Although EMA …

The use of ambulatory assessments (AAs) as an approach to gather self-reported
questionnaires or self-collected biochemical data is constantly increasing to investigate the …

Due to the increasing popularity of recent advanced features and context-awareness in
smart mobile phones, the contextual data relevant to users' diverse activities with their …

Many of today's mobile products and services engage their users proactively via push
notifications. However, such notifications are not always delivered at the right moment …

Abstract The Experience Sampling Method is widely used to collect human labelled data in
the wild. Using this methodology, study participants repeatedly answer a set of questions …

Wearable wireless sensors for health monitoring are enabling the design and delivery of just-
in-time interventions (JITI). Critical to the success of JITI is to time its delivery so that the user …

Desirable outcomes such as health are tightly linked to behaviors, thus inspiring research on
technologies that support people in changing those behaviors. Many behavior-change …

Learning a foreign language is a daunting and time-consuming task. People often lack the
time or motivation to sit down and engage with learning content on a regular basis. We …

Today's information and communication devices provide always-on connectivity, instant
access to an endless repository of information, and represent the most direct point of contact …

Virtual reality (VR) has increasingly been used in many areas, and the need to deliver
notifications in VR is also expected to increase accordingly. However, untimely interruptions …