Extract the posterior variance-covariance matrix of model parameters from a
fitted INLAvaan model.
Usage
# S4 method for class 'INLAvaan'
vcov(object, type = c("lavaan", "theta"), ...)Arguments
- object
An object of class INLAvaan.
- type
Character.
"lavaan"(default) returns the posterior covariance matrix of the model parameters computed from posterior samples, with one row per entry ofcoef()(matching lavaan output)."theta"returns the Laplace approximation covariance in the internal parameterisation, with one row per distinct free parameter.- ...
Currently unused.
Examples
# \donttest{
HS.model <- "
visual =~ x1 + x2 + x3
textual =~ x4 + x5 + x6
speed =~ x7 + x8 + x9
"
utils::data("HolzingerSwineford1939", package = "lavaan")
fit <- acfa(HS.model, HolzingerSwineford1939, std.lv = TRUE, nsamp = 100,
test = "none", verbose = FALSE)
# Default: posterior covariance of lavaan parameters
vcov(fit)
#> visual=~x1 visual=~x2 visual=~x3 textual=~x4
#> visual=~x1 5.413181e-03 4.474265e-04 -6.693032e-04 -5.015573e-05
#> visual=~x2 4.474265e-04 6.037591e-03 1.343305e-03 2.329609e-04
#> visual=~x3 -6.693032e-04 1.343305e-03 6.050402e-03 1.524591e-04
#> textual=~x4 -5.015573e-05 2.329609e-04 1.524591e-04 3.114140e-03
#> textual=~x5 -4.287202e-04 -3.720655e-04 1.749072e-04 8.311886e-04
#> textual=~x6 -3.697571e-04 -4.496549e-04 -9.442889e-05 4.851978e-04
#> speed=~x7 2.297338e-04 -3.384641e-04 -5.625356e-04 -4.599568e-04
#> speed=~x8 6.574913e-04 7.682927e-04 2.126156e-04 -2.398714e-04
#> speed=~x9 3.861679e-04 1.725802e-04 2.772709e-04 6.346486e-05
#> x1~~x1 -4.627131e-03 2.696443e-03 4.002414e-03 1.020177e-03
#> x2~~x2 1.509745e-03 -3.870671e-04 -1.344123e-03 5.698338e-06
#> x3~~x3 1.521946e-03 -7.924580e-04 -3.215621e-03 1.994392e-04
#> x4~~x4 -1.482432e-04 6.509829e-05 3.506266e-05 -8.502947e-04
#> x5~~x5 4.491172e-04 -9.010202e-04 1.490473e-04 1.795175e-04
#> x6~~x6 1.141003e-04 -1.805599e-04 -3.394637e-04 4.912329e-04
#> x7~~x7 2.954097e-04 9.295761e-04 -1.995881e-04 4.912906e-04
#> x8~~x8 -4.299219e-04 -4.430443e-04 8.277957e-04 5.336865e-04
#> x9~~x9 -3.801630e-05 -6.480917e-04 -5.526397e-04 -1.967915e-04
#> visual~~textual 9.684291e-04 5.896701e-05 -1.453104e-03 6.169455e-04
#> visual~~speed 2.180709e-04 9.474808e-05 1.143912e-03 6.694756e-04
#> textual~~speed 7.433904e-04 -8.599445e-04 -6.076821e-04 3.298792e-04
#> textual=~x5 textual=~x6 speed=~x7 speed=~x8
#> visual=~x1 -4.287202e-04 -3.697571e-04 2.297338e-04 0.0006574913
#> visual=~x2 -3.720655e-04 -4.496549e-04 -3.384641e-04 0.0007682927
#> visual=~x3 1.749072e-04 -9.442889e-05 -5.625356e-04 0.0002126156
#> textual=~x4 8.311886e-04 4.851978e-04 -4.599568e-04 -0.0002398714
#> textual=~x5 3.146609e-03 7.680857e-04 -3.368174e-04 0.0002601112
#> textual=~x6 7.680857e-04 2.498056e-03 2.130508e-04 -0.0003163204
#> speed=~x7 -3.368174e-04 2.130508e-04 4.879471e-03 0.0018419361
#> speed=~x8 2.601112e-04 -3.163204e-04 1.841936e-03 0.0060778418
#> speed=~x9 -9.381968e-05 -1.169154e-04 -6.380521e-04 -0.0012260774
#> x1~~x1 4.499296e-04 1.059653e-04 -1.673950e-03 -0.0013031756
#> x2~~x2 8.819019e-05 -1.762153e-04 -7.476152e-04 -0.0010637581
#> x3~~x3 -2.324088e-05 4.020758e-04 -1.754290e-04 -0.0003726484
#> x4~~x4 -4.028424e-04 1.895027e-04 -3.153563e-05 -0.0002633289
#> x5~~x5 -9.914897e-04 1.343896e-04 -6.863038e-05 -0.0011099706
#> x6~~x6 6.238540e-04 -2.021647e-04 -6.720296e-05 0.0002212149
#> x7~~x7 -4.234199e-04 4.042934e-05 -2.434874e-03 -0.0011185613
#> x8~~x8 -1.486898e-04 9.452025e-05 -1.155630e-03 -0.0047938208
#> x9~~x9 4.811932e-05 1.115673e-04 1.745520e-03 0.0032131992
#> visual~~textual 8.496692e-05 8.268373e-04 1.470228e-04 -0.0006192190
#> visual~~speed 6.628415e-04 2.070453e-04 -1.498161e-03 -0.0020100962
#> textual~~speed 1.165877e-03 5.850574e-04 -1.590911e-04 -0.0010561780
#> speed=~x9 x1~~x1 x2~~x2 x3~~x3
#> visual=~x1 3.861679e-04 -4.627131e-03 1.509745e-03 1.521946e-03
#> visual=~x2 1.725802e-04 2.696443e-03 -3.870671e-04 -7.924580e-04
#> visual=~x3 2.772709e-04 4.002414e-03 -1.344123e-03 -3.215621e-03
#> textual=~x4 6.346486e-05 1.020177e-03 5.698338e-06 1.994392e-04
#> textual=~x5 -9.381968e-05 4.499296e-04 8.819019e-05 -2.324088e-05
#> textual=~x6 -1.169154e-04 1.059653e-04 -1.762153e-04 4.020758e-04
#> speed=~x7 -6.380521e-04 -1.673950e-03 -7.476152e-04 -1.754290e-04
#> speed=~x8 -1.226077e-03 -1.303176e-03 -1.063758e-03 -3.726484e-04
#> speed=~x9 4.631740e-03 2.205036e-04 1.431289e-03 2.724994e-04
#> x1~~x1 2.205036e-04 1.261891e-02 -2.855042e-03 -3.932248e-03
#> x2~~x2 1.431289e-03 -2.855042e-03 1.185299e-02 6.532886e-04
#> x3~~x3 2.724994e-04 -3.932248e-03 6.532886e-04 8.239372e-03
#> x4~~x4 8.793289e-05 9.530773e-05 6.408439e-04 -2.796439e-04
#> x5~~x5 -5.348283e-04 1.694920e-04 7.652578e-04 -1.284710e-04
#> x6~~x6 -6.774589e-05 -1.562295e-04 3.522314e-04 -1.397624e-04
#> x7~~x7 1.572025e-03 1.741113e-04 -8.470831e-04 5.267880e-04
#> x8~~x8 2.883448e-03 9.033929e-04 1.043909e-03 1.384895e-04
#> x9~~x9 -3.537998e-03 -1.591788e-03 -4.422017e-04 -7.481051e-04
#> visual~~textual -1.604861e-04 -1.212355e-03 -2.244052e-04 1.843143e-03
#> visual~~speed 1.897531e-03 1.714909e-03 2.119762e-03 -1.966221e-04
#> textual~~speed 1.456440e-03 -4.451294e-04 1.895450e-04 1.143457e-03
#> x4~~x4 x5~~x5 x6~~x6 x7~~x7
#> visual=~x1 -1.482432e-04 4.491172e-04 1.141003e-04 2.954097e-04
#> visual=~x2 6.509829e-05 -9.010202e-04 -1.805599e-04 9.295761e-04
#> visual=~x3 3.506266e-05 1.490473e-04 -3.394637e-04 -1.995881e-04
#> textual=~x4 -8.502947e-04 1.795175e-04 4.912329e-04 4.912906e-04
#> textual=~x5 -4.028424e-04 -9.914897e-04 6.238540e-04 -4.234199e-04
#> textual=~x6 1.895027e-04 1.343896e-04 -2.021647e-04 4.042934e-05
#> speed=~x7 -3.153563e-05 -6.863038e-05 -6.720296e-05 -2.434874e-03
#> speed=~x8 -2.633289e-04 -1.109971e-03 2.212149e-04 -1.118561e-03
#> speed=~x9 8.793289e-05 -5.348283e-04 -6.774589e-05 1.572025e-03
#> x1~~x1 9.530773e-05 1.694920e-04 -1.562295e-04 1.741113e-04
#> x2~~x2 6.408439e-04 7.652578e-04 3.522314e-04 -8.470831e-04
#> x3~~x3 -2.796439e-04 -1.284710e-04 -1.397624e-04 5.267880e-04
#> x4~~x4 1.764372e-03 -2.066581e-04 -2.578032e-04 2.304409e-04
#> x5~~x5 -2.066581e-04 3.178506e-03 -2.766564e-04 -4.911884e-04
#> x6~~x6 -2.578032e-04 -2.766564e-04 1.750929e-03 2.234305e-04
#> x7~~x7 2.304409e-04 -4.911884e-04 2.234305e-04 7.021683e-03
#> x8~~x8 -2.115732e-04 9.375363e-04 -3.679690e-04 1.163424e-03
#> x9~~x9 -7.472324e-05 9.877891e-05 5.738860e-05 -1.615648e-03
#> visual~~textual -1.051931e-04 1.555510e-04 2.281494e-04 6.243665e-04
#> visual~~speed 1.547870e-04 -3.909697e-04 -8.792440e-05 2.932713e-04
#> textual~~speed 1.042183e-04 2.684125e-04 5.365461e-04 2.627113e-04
#> x8~~x8 x9~~x9 visual~~textual visual~~speed
#> visual=~x1 -4.299219e-04 -3.801630e-05 9.684291e-04 2.180709e-04
#> visual=~x2 -4.430443e-04 -6.480917e-04 5.896701e-05 9.474808e-05
#> visual=~x3 8.277957e-04 -5.526397e-04 -1.453104e-03 1.143912e-03
#> textual=~x4 5.336865e-04 -1.967915e-04 6.169455e-04 6.694756e-04
#> textual=~x5 -1.486898e-04 4.811932e-05 8.496692e-05 6.628415e-04
#> textual=~x6 9.452025e-05 1.115673e-04 8.268373e-04 2.070453e-04
#> speed=~x7 -1.155630e-03 1.745520e-03 1.470228e-04 -1.498161e-03
#> speed=~x8 -4.793821e-03 3.213199e-03 -6.192190e-04 -2.010096e-03
#> speed=~x9 2.883448e-03 -3.537998e-03 -1.604861e-04 1.897531e-03
#> x1~~x1 9.033929e-04 -1.591788e-03 -1.212355e-03 1.714909e-03
#> x2~~x2 1.043909e-03 -4.422017e-04 -2.244052e-04 2.119762e-03
#> x3~~x3 1.384895e-04 -7.481051e-04 1.843143e-03 -1.966221e-04
#> x4~~x4 -2.115732e-04 -7.472324e-05 -1.051931e-04 1.547870e-04
#> x5~~x5 9.375363e-04 9.877891e-05 1.555510e-04 -3.909697e-04
#> x6~~x6 -3.679690e-04 5.738860e-05 2.281494e-04 -8.792440e-05
#> x7~~x7 1.163424e-03 -1.615648e-03 6.243665e-04 2.932713e-04
#> x8~~x8 8.534511e-03 -4.527370e-03 4.016480e-04 3.095034e-03
#> x9~~x9 -4.527370e-03 7.133600e-03 -3.253176e-04 -3.031485e-03
#> visual~~textual 4.016480e-04 -3.253176e-04 4.406254e-03 8.067023e-04
#> visual~~speed 3.095034e-03 -3.031485e-03 8.067023e-04 6.959602e-03
#> textual~~speed 2.247422e-03 -1.581332e-03 1.758606e-03 2.411570e-03
#> textual~~speed
#> visual=~x1 0.0007433904
#> visual=~x2 -0.0008599445
#> visual=~x3 -0.0006076821
#> textual=~x4 0.0003298792
#> textual=~x5 0.0011658767
#> textual=~x6 0.0005850574
#> speed=~x7 -0.0001590911
#> speed=~x8 -0.0010561780
#> speed=~x9 0.0014564398
#> x1~~x1 -0.0004451294
#> x2~~x2 0.0001895450
#> x3~~x3 0.0011434569
#> x4~~x4 0.0001042183
#> x5~~x5 0.0002684125
#> x6~~x6 0.0005365461
#> x7~~x7 0.0002627113
#> x8~~x8 0.0022474220
#> x9~~x9 -0.0015813321
#> visual~~textual 0.0017586064
#> visual~~speed 0.0024115696
#> textual~~speed 0.0062624927
# Internal parameterisation (Laplace approximation)
vcov(fit, type = "theta")
#> visual=~x1 visual=~x2 visual=~x3 textual=~x4
#> visual=~x1 6.944819e-03 -9.228843e-04 -9.935751e-04 3.389857e-04
#> visual=~x2 -9.228843e-04 6.568863e-03 1.577215e-03 1.410972e-04
#> visual=~x3 -9.935751e-04 1.577215e-03 6.061736e-03 1.941726e-04
#> textual=~x4 3.389857e-04 1.410972e-04 1.941726e-04 3.223624e-03
#> textual=~x5 3.141650e-04 2.000129e-04 2.591496e-04 1.688801e-03
#> textual=~x6 2.546537e-04 1.692562e-04 2.206257e-04 1.376938e-03
#> speed=~x7 3.049172e-04 7.658901e-05 5.006757e-05 8.922238e-05
#> speed=~x8 3.435120e-04 1.427343e-04 4.258362e-05 9.357838e-05
#> speed=~x9 6.233622e-05 1.250035e-04 3.071841e-04 7.405772e-05
#> x1~~x1 -1.222508e-02 5.410147e-03 6.403818e-03 -1.279744e-04
#> x2~~x2 1.466413e-03 -2.090859e-03 -9.100595e-04 2.237214e-05
#> x3~~x3 3.072863e-03 -1.610649e-03 -3.944877e-03 3.916836e-05
#> x4~~x4 -2.114624e-04 1.400470e-04 1.444548e-04 -1.889064e-03
#> x5~~x5 9.341801e-05 -6.713443e-05 -6.283285e-05 5.955463e-04
#> x6~~x6 1.154535e-04 -7.284124e-05 -8.025778e-05 6.602594e-04
#> x7~~x7 -1.669503e-04 5.012766e-05 1.437528e-04 -1.903188e-05
#> x8~~x8 -3.329928e-04 -4.342221e-05 3.783558e-04 -8.334976e-06
#> x9~~x9 3.507098e-04 -1.901485e-05 -3.605765e-04 2.021852e-05
#> visual~~textual 9.461949e-04 2.082300e-05 -3.796066e-04 7.715873e-04
#> visual~~speed -4.825363e-04 3.751536e-04 9.875436e-04 2.256550e-04
#> textual~~speed 4.314192e-04 2.654701e-04 4.026555e-04 4.093776e-04
#> textual=~x5 textual=~x6 speed=~x7 speed=~x8
#> visual=~x1 3.141650e-04 2.546537e-04 3.049172e-04 3.435120e-04
#> visual=~x2 2.000129e-04 1.692562e-04 7.658901e-05 1.427343e-04
#> visual=~x3 2.591496e-04 2.206257e-04 5.006757e-05 4.258362e-05
#> textual=~x4 1.688801e-03 1.376938e-03 8.922238e-05 9.357838e-05
#> textual=~x5 3.930062e-03 1.578490e-03 7.437476e-05 9.582845e-05
#> textual=~x6 1.578490e-03 2.898913e-03 7.457536e-05 9.654040e-05
#> speed=~x7 7.437476e-05 7.457536e-05 5.475475e-03 1.898565e-03
#> speed=~x8 9.582845e-05 9.654040e-05 1.898565e-03 5.612839e-03
#> speed=~x9 1.034695e-04 6.539474e-05 -8.867327e-04 -1.687832e-03
#> x1~~x1 6.481860e-05 7.383460e-05 -3.332406e-04 -3.390605e-04
#> x2~~x2 -1.259862e-05 -1.328243e-05 3.157452e-05 -8.647084e-06
#> x3~~x3 -2.269572e-05 -2.738332e-05 1.527783e-04 2.064197e-04
#> x4~~x4 6.459757e-04 6.832362e-04 -5.449319e-05 5.461796e-06
#> x5~~x5 -2.080084e-03 4.801831e-04 6.677323e-05 4.678771e-05
#> x6~~x6 5.039398e-04 -1.603122e-03 -7.335699e-06 -4.579406e-05
#> x7~~x7 1.757196e-05 -5.183366e-06 -3.368940e-03 -1.767978e-03
#> x8~~x8 1.574371e-05 -3.771666e-05 -3.429949e-03 -9.323437e-03
#> x9~~x9 -2.677522e-05 2.604058e-05 3.695614e-03 5.862929e-03
#> visual~~textual 5.976293e-04 7.336587e-04 1.891355e-04 2.281799e-04
#> visual~~speed 2.858364e-04 2.187081e-04 -1.926030e-03 -2.320677e-03
#> textual~~speed 4.661669e-04 4.047452e-04 -3.246937e-04 -8.927829e-04
#> speed=~x9 x1~~x1 x2~~x2 x3~~x3
#> visual=~x1 6.233622e-05 -0.0122250842 1.466413e-03 3.072863e-03
#> visual=~x2 1.250035e-04 0.0054101467 -2.090859e-03 -1.610649e-03
#> visual=~x3 3.071841e-04 0.0064038183 -9.100595e-04 -3.944877e-03
#> textual=~x4 7.405772e-05 -0.0001279744 2.237214e-05 3.916836e-05
#> textual=~x5 1.034695e-04 0.0000648186 -1.259862e-05 -2.269572e-05
#> textual=~x6 6.539474e-05 0.0000738346 -1.328243e-05 -2.738332e-05
#> speed=~x7 -8.867327e-04 -0.0003332406 3.157452e-05 1.527783e-04
#> speed=~x8 -1.687832e-03 -0.0003390605 -8.647084e-06 2.064197e-04
#> speed=~x9 5.894651e-03 0.0004510226 -1.161187e-05 -2.491848e-04
#> x1~~x1 4.510226e-04 0.0463660406 -4.766128e-03 -9.986706e-03
#> x2~~x2 -1.161187e-05 -0.0047661278 8.511238e-03 1.417195e-03
#> x3~~x3 -2.491848e-04 -0.0099867063 1.417195e-03 1.281872e-02
#> x4~~x4 2.680573e-05 0.0006882199 -1.230916e-04 -2.246406e-04
#> x5~~x5 -7.597103e-05 -0.0003116688 5.786411e-05 9.502759e-05
#> x6~~x6 4.038167e-05 -0.0003723394 6.453136e-05 1.260108e-04
#> x7~~x7 2.439345e-03 0.0005089865 -4.915125e-05 -2.357085e-04
#> x8~~x8 7.513275e-03 0.0010008137 2.603809e-05 -6.179704e-04
#> x9~~x9 -7.620125e-03 -0.0010703061 2.712778e-05 5.860744e-04
#> visual~~textual 1.179829e-04 -0.0009458378 3.021593e-04 1.338676e-03
#> visual~~speed 3.691166e-03 0.0036899830 -1.057782e-05 -7.935360e-04
#> textual~~speed 1.371421e-03 0.0001321966 -2.703898e-06 -8.890268e-05
#> x4~~x4 x5~~x5 x6~~x6 x7~~x7
#> visual=~x1 -2.114624e-04 9.341801e-05 1.154535e-04 -1.669503e-04
#> visual=~x2 1.400470e-04 -6.713443e-05 -7.284124e-05 5.012766e-05
#> visual=~x3 1.444548e-04 -6.283285e-05 -8.025778e-05 1.437528e-04
#> textual=~x4 -1.889064e-03 5.955463e-04 6.602594e-04 -1.903188e-05
#> textual=~x5 6.459757e-04 -2.080084e-03 5.039398e-04 1.757196e-05
#> textual=~x6 6.832362e-04 4.801831e-04 -1.603122e-03 -5.183366e-06
#> speed=~x7 -5.449319e-05 6.677323e-05 -7.335699e-06 -3.368940e-03
#> speed=~x8 5.461796e-06 4.678771e-05 -4.579406e-05 -1.767978e-03
#> speed=~x9 2.680573e-05 -7.597103e-05 4.038167e-05 2.439345e-03
#> x1~~x1 6.882199e-04 -3.116688e-04 -3.723394e-04 5.089865e-04
#> x2~~x2 -1.230916e-04 5.786411e-05 6.453136e-05 -4.915125e-05
#> x3~~x3 -2.246406e-04 9.502759e-05 1.260108e-04 -2.357085e-04
#> x4~~x4 1.672689e-02 -3.182478e-03 -3.506878e-03 8.429821e-05
#> x5~~x5 -3.182478e-03 1.691445e-02 -2.479085e-03 -1.040738e-04
#> x6~~x6 -3.506878e-03 -2.479085e-03 1.491448e-02 1.148294e-05
#> x7~~x7 8.429821e-05 -1.040738e-04 1.148294e-05 1.190422e-02
#> x8~~x8 -1.761092e-05 -1.415088e-04 1.382795e-04 5.305242e-03
#> x9~~x9 -6.349724e-05 1.774102e-04 -9.433640e-05 -5.724535e-03
#> visual~~textual -2.529357e-04 1.027251e-03 -3.238691e-04 -5.033374e-05
#> visual~~speed 7.175173e-05 -9.662949e-05 1.430018e-05 3.700656e-03
#> textual~~speed 1.292443e-04 8.197794e-05 -1.581051e-05 9.250200e-04
#> x8~~x8 x9~~x9 visual~~textual visual~~speed
#> visual=~x1 -3.329928e-04 3.507098e-04 9.461949e-04 -4.825363e-04
#> visual=~x2 -4.342221e-05 -1.901485e-05 2.082300e-05 3.751536e-04
#> visual=~x3 3.783558e-04 -3.605765e-04 -3.796066e-04 9.875436e-04
#> textual=~x4 -8.334976e-06 2.021852e-05 7.715873e-04 2.256550e-04
#> textual=~x5 1.574371e-05 -2.677522e-05 5.976293e-04 2.858364e-04
#> textual=~x6 -3.771666e-05 2.604058e-05 7.336587e-04 2.187081e-04
#> speed=~x7 -3.429949e-03 3.695614e-03 1.891355e-04 -1.926030e-03
#> speed=~x8 -9.323437e-03 5.862929e-03 2.281799e-04 -2.320677e-03
#> speed=~x9 7.513275e-03 -7.620125e-03 1.179829e-04 3.691166e-03
#> x1~~x1 1.000814e-03 -1.070306e-03 -9.458378e-04 3.689983e-03
#> x2~~x2 2.603809e-05 2.712778e-05 3.021593e-04 -1.057782e-05
#> x3~~x3 -6.179704e-04 5.860744e-04 1.338676e-03 -7.935360e-04
#> x4~~x4 -1.761092e-05 -6.349724e-05 -2.529357e-04 7.175173e-05
#> x5~~x5 -1.415088e-04 1.774102e-04 1.027251e-03 -9.662949e-05
#> x6~~x6 1.382795e-04 -9.433640e-05 -3.238691e-04 1.430018e-05
#> x7~~x7 5.305242e-03 -5.724535e-03 -5.033374e-05 3.700656e-03
#> x8~~x8 3.472513e-02 -1.762404e-02 -1.304225e-04 8.608315e-03
#> x9~~x9 -1.762404e-02 2.454052e-02 1.179607e-04 -7.497054e-03
#> visual~~textual -1.304225e-04 1.179607e-04 6.423496e-03 7.193127e-04
#> visual~~speed 8.608315e-03 -7.497054e-03 7.193127e-04 1.177453e-02
#> textual~~speed 3.652556e-03 -2.529804e-03 1.493595e-03 3.066816e-03
#> textual~~speed
#> visual=~x1 4.314192e-04
#> visual=~x2 2.654701e-04
#> visual=~x3 4.026555e-04
#> textual=~x4 4.093776e-04
#> textual=~x5 4.661669e-04
#> textual=~x6 4.047452e-04
#> speed=~x7 -3.246937e-04
#> speed=~x8 -8.927829e-04
#> speed=~x9 1.371421e-03
#> x1~~x1 1.321966e-04
#> x2~~x2 -2.703898e-06
#> x3~~x3 -8.890268e-05
#> x4~~x4 1.292443e-04
#> x5~~x5 8.197794e-05
#> x6~~x6 -1.581051e-05
#> x7~~x7 9.250200e-04
#> x8~~x8 3.652556e-03
#> x9~~x9 -2.529804e-03
#> visual~~textual 1.493595e-03
#> visual~~speed 3.066816e-03
#> textual~~speed 5.945061e-03
# }