Mplus syntax to accompany models and analyses in:
Selig, J. P., & Preacher, K. J. (2009). Mediation models for longitudinal data in developmental research. Research in Human Development, 6, 144-164.
Mplus syntax for the latent difference score (LDS) model.
TITLE: Selig & Preacher (2009) DATA: FILE IS MASTER.TXT; VARIABLE: NAMES ARE MDEP6A MDEP6B MDEP6C MDEP15A MDEP15B MDEP15C SENS15 INTRU15 POSREG15 SENS24 INTRU24 POSREG24 T_ANXDP T_WITHD T_AGRES T_DESTR T_ANXD36 T_WITH36 T_AGRE36 T_DEST36; MISSING IS .; MODEL: !LAMBDA MDEP1 BY MDEP6A@1 MDEP6B(1) MDEP6C(2); MDEP2 BY MDEP15A@1 MDEP15B(1) MDEP15C(2); SENS2 BY SENS15*(3) INTRU15(4) POSREG15@1; SENS3 BY SENS24*(3) INTRU24(4) POSREG24@1; CBCL3 BY T_ANXDP@1 T_WITHD(5) T_AGRES(6) T_DESTR(7); CBCL4 BY T_ANXD36@1 T_WITH36(5) T_AGRE36(6) T_DEST36(7); !THETA MDEP6A*; MDEP6B*; MDEP6C*; MDEP15A*; MDEP15B*; MDEP15C*; SENS15*; INTRU15*; POSREG15*; SENS24*; INTRU24*; POSREG24*; T_ANXDP*; T_WITHD*; T_AGRES*; T_DESTR*; T_ANXD36*; T_WITH36*; T_AGRE36*; T_DEST36*; MDEP6A WITH MDEP15A*; MDEP6B WITH MDEP15B*; MDEP6C WITH MDEP15C*; SENS15 WITH SENS24*; INTRU15 WITH INTRU24*; POSREG15 WITH POSREG24*; T_ANXDP WITH T_ANXD36*; T_WITHD WITH T_WITH36*; T_AGRES WITH T_AGRE36*; T_DESTR WITH T_DEST36*; POSREG24 WITH SENS24*; !BETA MDEP2 ON MDEP1 @1; MDIFF BY MDEP2 @1; MDIFF ON MDEP1*; !PSI MDEP1*; MDEP2@0; MDIFF*; !BETA SENS3 ON SENS2 @1; SDIFF BY SENS3 @1; SDIFF ON SENS2*; !PSI SENS2*; SENS3@0; SDIFF*; !BETA CBCL4 ON CBCL3 @1; CDIFF BY CBCL4 @1; CDIFF ON CBCL3*; !PSI CBCL3*; CBCL4@0; CDIFF*; !BETA SENS2 ON MDEP1 MDIFF; SDIFF ON MDEP1 MDIFF; CBCL3 ON MDEP1 MDIFF SENS2 SDIFF; CDIFF ON MDEP1 MDIFF SENS2 SDIFF; MODEL INDIRECT: !From MDIFF->SENS2->CBCL3; CBCL3 IND SENS2 MDIFF; !From MDEP1->SDIFF->CDIFF; CDIFF IND SDIFF MDEP1; !From MDEP1->SENS2->CBCL3; CBCL3 IND SENS2 MDEP1; !From MDEP1->SDIFF->CBCL3; CBCL3 IND SDIFF MDEP1;