The paired t-test as a simple latent change score model

Frontiers in Psychology

Emil N. Coman¹ 

关键词: paired t-test;    latent change score;    statistical power;    true changes;    Structural Equation Modeling;    introductory statistics;   

DOI  :  10.3389/fpsyg.2013.00738

学科分类：心理学（综合）

来源: Frontiers

【 摘 要 】

The t-test is a common statistical test of differences in means. Despite the fact that its extension, the paired t-test (t-testP), appears in most introductory statistics textbooks, it is less known that for repeated variables the t-testP is in fact a model of change that can be replicated within the Structural Equation Modeling (SEM) framework. We show how to perform the t-testP with latent change scores (LCS) models, which allow for direct testing of significance of mean changes, and moreover can explain inter-individual (and group) differences in changes over time.

【 授权许可】

CC BY