Table 3.
Standardized factor loadings and R2 values for combined factor model

| Variable | n | Standardized factor loadings | R2 |
| Alcohol use W2 | 373 | .61 | .38 |
| Alcohol use W3 | 367 | .77 | .59 |
| Alcohol use W4 | 367 | .68 | .46 |
| Marijuana use W2 | 371 | .43 | .18 |
| Marijuana use W3 | 368 | 1.00 | 1.00 |
| Marijuana use W4 | 366 | .61 | .36 |
| Antisocial problems W1 | 387 | .55 | .30 |
| Antisocial problems W2 | 373 | .76 | .58 |
| Antisocial problems W3 | 370 | .98 | .95 |
| Inhibitory control W1 | 352 | .81 | .66 |
| Inhibitory control W2 | 349 | .80 | .64 |
| Inhibitory control W3 | 350 | .84 | .70 |
| Attentional control W1 | 387 | .87 | .76 |
| Attentional control W2 | 373 | .91 | .83 |
| Attentional control W3 | 370 | .88 | .78 |
| Inhibitory control W7 | 352 | .79 | .62 |
| Inhibitory control W8 | 349 | .81 | .65 |
| Inhibitory control W9 | 350 | .77 | .60 |
| Attentional control W7 | 387 | .80 | .64 |
| Attentional control W8 | 373 | .87 | .76 |
| Attentional control W9 | 370 | .75 | .83 |
Notes: W = wave. For standardized factor loadings, all ps < .001.