This volume gathers empirical and historical perspectives on closed captioning on German television for children who are d/Deaf or hard of hearing. It is partly based on a two-year study, SDH4KIDS, in which the following research question was addressed: Which subtitle-specific aspects have a positive impact on comprehensibility and acceptability of subtitled TV-programmes for d/Deaf and hard of hearing children aged between 8 and 12 ? The quantitative study with over 200 participants was accompanied by a qualitative study gathering eye-tracking data on subtitle reading behaviour with a smaller group of participants of the same age. Both studies are presented and discussed in detail. The results were furthermore used to develop guidelines for professional subtitling practice. In addition, this book provides a historical overview of subtitling practice for people who are d/Deaf or hard of hearing in the Federal Republic and the former German Democratic Republic of Germany. For this, previously unpublished material from the German Federal Archives has been examined.