Chapter 6 178 families received a detailed briefing via a video call, after which they received online informed consent forms. Parents also provided informed consent for the participation of their underaged adolescent. One dyad (i.e., composed of an adolescent between 12 – 16 years old and one parent with whom they had daily contact) could participate per family. Both members of the dyad needed to own a smartphone in order to participate. When multiple children in a household were eligible, the family themselves could decide who would participate in the study. For 100 consecutive days (October 26, 2020, until February 2, 2021), adolescents received daily surveys (ca. 3-5 min) via the Ethica Data smartphone app. The surveys were prompted between 7 PM and 10 PM, depending on their preference. A maximum of four automatic reminders were sent in the evening and one final reminder at 7AM the following morning. To ensure compliance, several motivational features were added. Specifically, adolescents received a monetary reward for each completed survey and bonus if they completed 10 surveys in a row and 100 surveys in total. Overall, adolescents could receive up to €100 (approximately US$121), and €10 was raffled off daily to two adolescents who completed the daily survey. Missed surveys could be compensated by extending the participation period to a maximum of 25 days. This resulted in an average of 93 completed (SD = 15.7, range = 24 – 108) and 13 missing daily diaries (SD = 16.6, range = 0 – 76) per person, with most completed in the evening (80%). This study was approved by the Ethical Committee of Tilburg University (RP250). More detailed information about the procedure can be found online: https://osf.io/5mhgk/. Parts of the data were analyzed in prior work (Boele, Bülow, Beltz, et al., 2023; Bülow, Neubauer, et al., 2022; De Vries et al., 2023). Measures All daily diary items were scored on a visual analogue scale (VAS) ranging from 0 (Not at all) to 100 (Very much). Parenting Practices Warmth Parental warmth includes (a) provision of affection and (b) parental care and responsiveness (Soenens et al., 2017), which were rated by adolescents with two items. The two items were adapted from a Dutch daily diary study (Keijsers et al., 2016), which was, in turn, based on the widely used Network of Relationships Inventory (NRI; Furman & Buhrmester, 1985). The items were: “The relationship with my parent was enjoyable”
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