Ambulatory assessment - Capturing behavior in daily life. A behavioral science'approach to psychology

Ambulatory Assessment refers to the use of computer-assisted methodology for self-reports, behavior records or physiological measurements, while the participant undergoes normal daily activities. For this, since the nineteeneighties portable microcomputer systems and physiological recorders/analyzers have been developed. In contrast to their use in medicine, up until today the new methods have hardly entered the domain of psychology. Questionnaire methods are still preferred, in spite of the known, deficiencies of retrospective self-reports. Assessment strategies include: continuous monitoring, monitoring with time and event sampling methods, in-field psychological testing, field experimentation, interactive assessment, symptom monitoring, and self-management. These approaches are innovative and address ecological validity, context specificity, and are suitable for practical applications. The advantages of this methodology, as well as issues of acceptance, compliance, and reactivity are discussed. Many technical developments and research contributions came from the German-speaking countries and the Netherlands. Nonetheless, but also the current Decade of Behavior (APA) calls for a more wide-spread use of such techniques and developments in assessment. This position paper seeks to make the case for this approach by demonstrating the advantages and in some domains - necessities of ambulatory monitoring methodology for a behavioral science orientation in psychology.