Evaluating the influence of expectations, price and content selection on video quality perception

Current QoE assessment approaches predominantly treat endusers as passive consumers of the services provided by the system under test. As a consequence, we witness a lack of evaluation methods suitable for real-world economic scenarios in which subjects actually represent active, decision-making agents. In this paper we provide guidance on how to conduct reliable and valid subjective lab experiments addressing economics-related QoE topics, based on the experiences from a recently conducted lab study on video quality as well as preceding trials. Relevant design aspects include choice of appropriate video content, clip duration, participants´ monetary budgets and quality pricing. Furthermore, we discuss how individual expectations w.r.t video quality can be quantified and modeled.