This study utilized data from a nationally representative sample of Australian adults (n = 1164; 50.7% female; age M = 44.9 years, SD = 16.3) to examine the relationships between age, technology concerns, self-rated and objective amount of smartphone use, and problematic smartphone use. Participants completed measures of problematic smartphone use and technology concern, while amount of smartphone use was self-rated and objectively measured using device-level smartphone screen time reporting tools (Screen Time for iOS and Digital Wellbeing for Android). Amount of self-rated and objective smartphone use declined linearly with age. In contrast, problematic smartphone use was relatively high and stable in young adults before rapidly declining around age 40. People were reasonably good at estimating their amount of smartphone use (r = 0.73), although they did tend to underestimate usage. Technology concern was high across all ages, but unrelated to amount of usage and problematic smartphone usage. Age related differences are interpreted in terms of a combination of developmental and generational changes. Results also suggest that amount of use is an important but not complete cause of problematic smartphone use.

这项研究利用了澳大利亚成年人的全国代表性样本的数据（n  = 1164；女性50.7％；年龄M  = 44.9岁，SD =16.3）检查年龄，技术问题，智能手机使用的自我评估和客观数量以及有问题的智能手机使用之间的关系。参与者完成了有关智能手机使用问题和技术关注的评估，而智能手机使用量是通过设备级别的智能手机屏幕时间报告工具（iOS的屏幕时间和Android的Digital Wellbeing）进行自我评估和客观衡量的。自评和客观智能手机的使用量随着年龄的增长而线性下降。相比之下，智能手机的问题用相对较高和稳定的青壮年岁之前迅速下降40.周围人们都相当不错，在估算其智能手机的使用量（[R = 0.73），尽管它们确实会低估使用率。各个年龄段的技术关注度都很高，但与使用量和智能手机使用问题无关。与年龄有关的差异是根据发育和世代变化的组合来解释的。结果还表明，使用量是导致智能手机使用出现问题的重要原因，但并非完全原因。