“…In other words, people who have a history of engagement in high-quality relationships that can promote social belongingness and emotional security should get better sleep. Although no research to date has tested whether patterns of experiences and behaviors across relationships predict sleep, a sizable body of research has shown that positive aspects of current romantic relationships-such as greater daily self-disclosure (Kane, Slatcher, Reynolds, Repetti, & Robles, 2014), greater perceptions of partner responsiveness (Selcuk, Stanton, Slatcher, & Ong, 2016), greater marital harmony (Prigerson, Maciejewski, & Rosenheck, 1999), and increases in marital quality over time (Lee, Chopik, & Schiamberg, 2017)-all predict better sleep quality and/or duration. Conversely, greater relationship conflict is associated with poorer sleep quality (Hicks & Diamond, 2011), shorter sleep duration (for women), and difficulties falling asleep (El-Sheikh, Kelly, & Rauer, 2013).…”