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. 2016 Oct 27;12(4):841–866. doi: 10.1007/s11482-016-9492-5

Table 5.

Unconditional growth models of PYD total score and higher order factors

PYD CBC PA PIT GPYDQ
Estimate SE Estimate SE Estimate SE Estimate SE Estimate SE
Fixed effects
 Intercept β 0j
 Intercept γ 00 4.493c .013 4.444c .013 4.490c .015 4.240c .017 4.565c .012
 Linear slope β 1j
 Time γ 10 −.046c .008 −.015 .009 −.072c .010 −.061c .011 −.038c .008
 Quadratic slope β 2j
 Time2 γ 20 .008c .001 .004a .002 .012c .002 .007b .002 .007c .002
Random effects
 Level 1 (within)
  Residual r ij .112c .002 .189c .003 .254c .004 .275b .005 .123c .002
 Level 2 (between)
  Intercept u 0j .381c .013 .373c .014 .521c .019 .659c .023 .384c .013
  Time u 1j .064c .005 .064c .007 .108c .010 .108c .010 .072c .005
  Time2 u 2j .002c .000 .002c .000 .003c .000 .003c .000 .002c .000
Fit statistics
 Deviance 20627.799 27442.065 33474.337 35460.865 22720.234
  AIC 20647.799 27462.065 33494.337 35480.865 22740.234
  BIC 20723.857 27538.859 33105.147 35557.897 22816.827
  df 10 10 10 10 10
  PVRr 11.3 % 6.4 % 9.4 % 7.8 % 11.5 %

PYD Positive youth development total scale, CBC Cognitive−behavioral competence, PA Positive attributes, PIT Positive identity, GPYDQ General positive youth development, r proportional reduction in variance, the proportion of incremental variance explained by quadratic model relative to linear model; c: p < .001; b: p < .01; a: p < .05