我用lavaan包用结构方程模型,提示的是Warning messages:
1: In lav_model_vcov(lavmodel = lavmodel2, lavsamplestats = lavsamplestats, :
lavaan WARNING:
Could not compute standard errors! The information matrix could
not be inverted. This may be a symptom that the model is not
identified.
2: In lav_object_post_check(object) :
lavaan WARNING: some estimated ov variances are negative
我自己也不知道到底哪不对,是我的数据方差不够大嘛