Procrastination is an increasingly prevalent phenomenon. Although research suggests smartphones might be involved, little is known about the momentary association between different patterns of smartphone use and procrastination. In a preregistered study, 221 students (M_age = 20, 55% female) self-reported procrastination five times a day for 30 days (i.e., experience sampling method) while their smartphone use was continuously monitored (i.e., passive logging). Using dynamic structural equation modeling on 27,151 observations, we estimated momentary within-person associations between procrastination and (a) total smartphone use and use of specific application categories (social media, messaging, browsers, games, and video streaming), (b) notifications, and (c) smartphone use fragmentation. Procrastination was positively albeit weakly associated with all aforementioned patterns, and associations varied from person to person. Collectively, our findings suggest these popular devices potentially encourage dilatory behavior.

拖延是越来越普遍的现象。尽管研究表明可能涉及智能手机，但对智能手机使用和拖延的不同模式之间的瞬时关联知之甚少。在预先注册的研究中，221名学生（中号_年龄= 20％，55％的女性）连续30天每天五次自我报告拖延症（即体验抽样方法），同时持续监控其智能手机的使用情况（即被动记录）。使用基于27,151个观测值的动态结构方程模型，我们估算了拖延与（a）智能手机总使用量和特定应用类别（社交媒体，消息传递，浏览器，游戏和视频流）的使用之间的瞬时人际关联，（b）通知，以及（c）智能手机使用情况不完整。拖延症与上述所有模式均呈弱正相关，并且因人而异。总的来说，我们的发现表明这些流行的设备潜在地鼓励了扩张行为。