Fitting Latent Growth Models with Small Sample Sizes and Non-normal Missing Data.
Fitting Latent Growth Models with Small Sample Sizes and Non-normal Missing Data.
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DOI：
10.1177/0165025420979365
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发表时间：
2021-03
影响因子：
3.7
通讯作者：
Jiang Z
中科院分区：
文献类型：
--
作者：
Shi D;DiStefano C;Zheng X;Liu R;Jiang Z
This study investigates the performance of robust ML estimators when fitting and evaluating small sample latent growth models (LGM) with non-normal missing data. Results showed that the robust ML methods could be used to account for non-normality even when the sample size is very small (e.g., N < 100). Among the robust ML estimators, “MLR” was the optimal choice, as it was found to be robust to both non-normality and missing data while also yielding more accurate standard error estimates and growth parameter coverage. However, the choice “MLMV” produced the most accurate p values for the Chi-square test statistic under conditions studied. Regarding the goodness of fit indices, as sample size decreased, all three fit indices studied (i.e., CFI, RMSEA, and SRMR) exhibited worse fit. When the sample size was very small (e.g., N < 60), the fit indices would imply that a proposed model fit poorly, when this might not be actually the case in the population.
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