Two online surveys were conducted in Japan to develop and validate the Sleep Belief-Practice Index (SBPI) scales, a pair of new scales designed to measure beliefs (SBPI-B) and practices (SBPI-P) on sleep and its environment. Their discrepancies (SBPI-D) were calculated as differences between SBPI-B and -P. In Survey 1 (N = 400), survey data of the pilot version of the scales were entered into an exploratory factor analysis to obtain a meaningful set of scale items. In Survey 2 (N = 2952), survey data were entered into a confirmatory factor analysis and then correlation analyses to confirm associations of SBPI-D with insomnia and positive and negative feelings. Furthermore, participants were categorized into four groups according to the degree and combination of sleep beliefs and practices to compare the status of insomnia and positive and negative feelings by the groups. As a result of factor analyses, we obtained 13 common item scales of SBPI-B and -P. SBPI-D was positively correlated with insomnia and negative feelings. In addition, the group with high-scoring beliefs in SBPI-B and low-scoring practices in SBPI-P showed the most severe insomnia and negative feelings among the four groups. These results suggest that the belief-practice discrepancy about sleep can explain one aspect of insomnia.

在日本进行了两项在线调查，以开发和验证睡眠信念-实践指数 (SBPI) 量表，这是一套旨在衡量关于睡眠及其环境的信念 (SBPI-B) 和实践 (SBPI-P) 的新量表。它们的差异 (SBPI-D) 计算为 SBPI-B 和 -P 之间的差异。在调查 1 (N = 400) 中，将试点版本的量表的调查数据输入探索性因素分析，以获得一组有意义的量表项目。在调查 2 (N = 2952) 中，将调查数据输入验证性因素分析，然后进行相关分析，以确认 SBPI-D 与失眠以及积极和消极情绪的关联。此外，根据睡眠信念和实践的程度和组合将参与者分为四组，以比较各组的失眠状况以及积极和消极的感受。作为因子分析的结果，我们得到了SBPI-B和-P的13个常见项目量表。SBPI-D与失眠和消极情绪呈正相关。此外，在 SBPI-B 中高分信念和 SBPI-P 低分实践的组在四组中表现出最严重的失眠和负面情绪。这些结果表明，关于睡眠的信念-实践差异可以解释失眠的一个方面。在 SBPI-B 中高分信念和 SBPI-P 低分实践的组在四组中表现出最严重的失眠和负面情绪。这些结果表明，关于睡眠的信念-实践差异可以解释失眠的一个方面。在 SBPI-B 中高分信念和 SBPI-P 低分实践的组在四组中表现出最严重的失眠和负面情绪。这些结果表明，关于睡眠的信念-实践差异可以解释失眠的一个方面。