Long Beach Longitudinal Study

The Long Beach Longitudinal Study (LBLS) was created in 1978 to obtain normative data for the Schaie-Thurston Adult Mental Abilities Test (STAMAT). From 1994 to 2003 it was extended under the guiding principle that cognitive aging is a largely contextual phenomenon. Individual differences in abilities and change in those abilities over adulthood are associated not only with cognitive mechanisms, but with sociodemographic phenomena such as birth cohort, or gender, and within-individual characteristics, including health, affect, self-efficacy, personality, and other variables that impact health. This principle is reflected in the testing measures added to the original panel. Besides the original ability measures used by Schaie, the Life Complexity Inventory, has been included in all testing. Because these measures were included in the later generations of testing, independent and direct comparisons can be made with Seattle Longitudinal Study (ICPSR 00158) to replicate findings and to generalize longitudinal samples. Panel 1 The initial panel was sampled in 1978 and consisted of 65 adults aged 28-33 and 518 adults aged 55-84. This sample was tested using the STAMAT, as well as a 20-item list of common English nouns for testing free recall, and a brief essay to test text recall. In 1981, 264 participants from this sample were retested, 106 were again retested from 1994-1995, and 42 in 1997. Finally, 15 participants of the original sample were tested from 2000-2002 using additional tests adopted for the creation of a second panel, described below, as well as a test for measuring executive function. Panel 2 In 1994, a second panel of 630 participants aged 30-97, a third of which were over 80, was added to the study. The testing for this sample included multiple indices of list recall, text recall, working memory, perceptual speed, and vocabulary for structural equation modeling. Assessment of language, autobiographical memory, personality, depression, health, health behaviors and other measures were also incorporated into the study. In 1997, 352 members of this second panel were retested. From 2000-2002, 179 participants of this second panel completed the 1994-1995 measures, as well as several tests extending the battery to indices of executive function. In 2003, 133 participants were retested. Panel 3 A third sample was recruited during the 2000-2002 time frame consisting of 911 participants aged 30-98, again approximately a third of which were over the age of 80. In 2003, 513 members of this third panel were retested. Datasets The data are provided in 6 datasets. Panel 1 and 2 1978 - 2003 Longitudinal File Dataset 1 is a longitudinal file of data from Panel 1 for tests performed in 1978, 1981, 1994, 1997, and 2000-2002, and data from Panel 2 for tests performed in 1994, 1997, 2000-2002 and 2003. Panels 1 and 2 1994 STAMAT File Dataset 2 contains the STAMAT test variables for Panels 1 and 2. Panel 1 and 2 1994-2000 Master Data Longitudinal File Dataset 3 is a second longitudinal file containing the complete catalog of variables from Panels 1 and 2 for test performed in 1994, 1997 and 2000. Panel 2 Wave 1 1994 Cross File Dataset 4 contains variables for the first wave of Panel 2 which took place in 1994. Panel 2 Wave 2 1997 Cross File Dataset 5 contains variables for the second wave of Panel 2 which took place in 1997. Panel 3 Wave 1 2000 Master File Dataset 6 contains variables from the first wave of Panel 3 which took place in 2000.

长滩纵向研究（LBLS）始于1978年，旨在获取Schaie-Thurston成人心理能力测试（STAMAT）的规范数据。自1994年至2003年，该研究遵循认知老化主要是一种情境现象的指导原则而得以扩展。个体在能力上的差异以及成年期间这些能力的变化不仅与认知机制相关，还与诸如出生队列、性别等社会人口学现象以及个体内部的特性，包括健康状况、情感、自我效能、个性和影响健康的其他变量相关。这一原则在新增的测试措施中得到了体现。除了Schaie使用的原始能力测试之外，生活复杂性量表也被纳入所有测试。由于这些措施被纳入后续的测试中，因此可以与西雅图纵向研究（ICPSR 00158）进行独立且直接的比较，以复制研究结果并推广纵向样本。第一组：1978年，对第一组65名28至33岁的成年人和518名55至84岁的成年人进行抽样。该样本使用STAMAT进行测试，以及一项包含20个常见英语名词的列表进行自由回忆测试，以及一篇简短的论文进行文本回忆测试。1981年，264名参与者重新进行了测试，其中106名在1994-1995年再次重新进行了测试，42名在1997年进行了测试。最后，2000-2002年间，15名原始样本的参与者接受了额外的测试，这些测试被用于创建第二组，具体如下，以及一项用于测量执行功能的测试。第二组：1994年，增加了第二个包含630名30至97岁参与者的组，其中三分之一年龄超过80岁。该样本的测试包括列表回忆、文本回忆、工作记忆、感知速度和词汇等多个指标，以及用于结构方程模型的语言、自传体记忆、个性、抑郁、健康、健康行为和其他指标的评估。1997年，第二组的352名成员重新进行了测试。2000-2002年，第二组的179名参与者完成了1994-1995年的测量，以及扩展测试套件的几个测试，以评估执行功能。2003年，133名参与者重新进行了测试。第三组：在2000-2002年间招募了第三组样本，包括911名30至98岁的参与者，其中大约三分之一年龄超过80岁。2003年，第三组的513名成员重新进行了测试。数据集：数据包含在6个数据集中。第一组和第二组：1978-2003年纵向文件数据集1包含第一组在1978年、1981年、1994年、1997年和2000-2002年进行的测试数据，以及第二组在1994年、1997年、2000-2002年和2003年进行的测试数据。第一组和第二组：1994年STAMAT文件数据集2包含第一组和第二组的STAMAT测试变量。第一组和第二组：1994-2000年主数据纵向文件数据集3是第二个纵向文件，包含第一组和第二组在1994年、1997年和2000年进行的测试的完整变量目录。第二组波次1 1994年横断面文件数据集4包含第二组在1994年进行的第一次波次测试的变量。第二组波次2 1997年横断面文件数据集5包含第二组在1997年进行的第二次波次测试的变量。第三组波次1 2000年主文件数据集6包含第三组在2000年进行的第一次波次测试的变量。