Aiken-Morgan Adrienne T, Gamaldo Alyssa A, Sims Regina C, Allaire Jason C, Whitfield Keith E
Center on Biobehavioral Health Disparities Research, Duke University, Durham, North Carolina.
School of Aging Studies, University of South Florida, Tampa.
J Gerontol B Psychol Sci Soc Sci. 2015 May;70(3):348-56. doi: 10.1093/geronb/gbu153. Epub 2014 Oct 31.
The present study examined the relationship between desegregated schooling and cognitive change in a sample of 420 community-dwelling African American elders (mean age = 68.6; SD = 9.1).
Participants were recruited for the Baltimore Study of Black Aging - Patterns of Cognitive Aging. Cognitive measures from six domains of function were administered at baseline and follow-up 33 months later. Repeated measures multivariate analysis of covariance was conducted; the between subjects factors were schooling type and age cohort, and the within subjects factor was time. Analyses controlled for age, years of education, and sex, and follow-up univariate analyses were used to determine which individual cognitive scores drove the multivariate effects.
There were significant multivariate within-group, between-group, and interaction effects (p < .05). Univariate analyses indicated that the desegregated schooling group scored significantly better on Language and Perceptual Speed (p < .01), and the youngest age cohort (50- to 59-year-olds) performed better on measures of Perceptual Speed. There were no significant univariate interactions between schooling group or age cohort and cognitive change over time.
Overall, these findings suggest a slight advantage of desegregated schooling for cognitive performance, but no advantage of desegregated schooling on the rate of cognitive change over time in this sample.
本研究在420名居住在社区的非裔美国老年人样本(平均年龄 = 68.6岁;标准差 = 9.1岁)中,考察了混合学校教育与认知变化之间的关系。
参与者被招募进入巴尔的摩黑人衰老认知衰老模式研究。在基线时以及33个月后的随访时,对六个功能领域的认知指标进行了测量。进行了重复测量多变量协方差分析;组间因素为学校教育类型和年龄组,组内因素为时间。分析对年龄、受教育年限和性别进行了控制,后续的单变量分析用于确定哪些个体认知分数驱动了多变量效应。
存在显著的多变量组内、组间和交互效应(p < .05)。单变量分析表明,混合学校教育组在语言和知觉速度方面得分显著更高(p < .01),最年轻的年龄组(50至59岁)在知觉速度测量方面表现更好。学校教育组或年龄组与随时间的认知变化之间不存在显著的单变量交互作用。
总体而言,这些发现表明混合学校教育对认知表现有轻微优势,但在该样本中,混合学校教育对随时间的认知变化率没有优势。