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Fully cross-lagged model of positive affect and digit symbol.
PA = Positive Affect. DS = Digit Symbol. D = disturbance. P = positive affect indicator. For presentation purposes, the covariates (age, self-rated health, loneliness, depression, marital status, and income) are not depicted in the model. In addition, one indicator for each latent construct is not depicted, for presentation purposes. * p < 0.01
