Time allocation, media selection, and displacement effects in different media generations – Modeling adolescent media use on the basis of diary data of (official) time budget studies

该项目旨在分析不同类型的媒体使用（基于文本的，音频和视听媒体和计算机/智能手机）之间的替代和互补关系的强度，以及媒体使用和其他活动（特别是计算机介导的人际传播）之间的替代和互补关系，作为不同媒体世代的不同时间限制的函数。在进一步的步骤中，该项目试图调查媒体类型的差异，用媒体使用的时间取代花在家庭作业和其他职责上的时间及其对青少年学业成绩的影响。数据库是时间预算数据和官方统计中用于次级分析的学业成绩数据，以及通过青少年日记研究收集的原始数据。

The project aims to analyze the strength of substitutional as well as complemen-tary relations between different types of media use (text-based, audio and audio-visual media and computer/smartphone) as well as between media use and other activities (especially computer-mediated interpersonal communication) as a function of diverging temporal constraints in different media generations. In a further step, the project seeks to investigate differences in media types displacing time spent on homework and other duties with time spent on media use and its effects on adolescent’s academic performance. Data bases are time budget data and data on academic performance from official statistics for secondary analysis and original data to be collected through a diary study with adolescents.