Features of an individual's sleep/wake patterns across multiple days are governed by two
dimensions, the mean and the intraindividual variability (IIV). The existing literature focuses …

Background Enhancements in mobile phone technology allow the study of children and
adolescents' everyday lives like never before. Ecological momentary assessment (EMA) …

While scholarly attention to date has focused almost entirely on individual-level drivers of
vaccine confidence, we show that macro-level factors play an important role in …

Technological advances have led to an increase in intensive longitudinal data and the
statistical literature on modeling such data is rapidly expanding, as are software capabilities …

Longitudinal Analysis provides an accessible, application-oriented treatment of introductory
and advanced linear models for within-person fluctuation and change. Organized by …

Creative use of new mobile and wearable health information and sensing technologies
(mHealth) has the potential to reduce the cost of health care and improve well-being in …

The evaluation of measurement invariance is an important step in establishing the validity
and comparability of measurements across individuals. Most commonly, measurement …

Physical activity reduces risks of many serious health conditions, including coronary heart
disease, type 2 diabetes, and breast and colon cancers (20). To achieve substantial health …

A growing body of research suggests that momentary assessment technologies that sample
experiences in the context of daily life constitute a useful and productive approach in the …

Temporal instability of affect is a defining characteristic of psychological disorders such as
borderline personality disorder (BPD) and mood cycling disorders. Ecological momentary …