Table 1. Means and Standard Deviations for Major Variables.
| Variable | Total Sample (N = 664) | Boys (N = 350) | Girls (N = 314) | F | |||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||
| Cognitive Competence 1 | 3.43 | .54 | 3.46 | .53 | 3.40 | .55 | 1.77 |
| Reading 2 | 461.66 | 22.58 | 460.25 | 23.37 | 463.22 | 21.59 | 2.86 |
| Math 2 | 475.91 | 11.15 | 476.95 | 11.92 | 474.75 | 10.13 | 6.47* |
| T rated Ach 2 | 4.23 | 1.33 | 4.20 | 1.38 | 4.27 | 1.29 | .38 |
| T rated Eng 2 | 4.06 | 1.35 | 3.85 | 1.38 | 4.30 | 1.26 | 19.11*** |
| Liking 2 | -.14 | .82 | -.21 | .79 | -.06 | .84 | 5.36* |
| PAR 2 | -.06 | .99 | -.11 | 1.03 | .00 | .94 | 1.94 |
| Reading 3 | 477.57 | 19.72 | 475.54 | 20.89 | 479.84 | 18.08 | 7.98** |
| Math 3 | 486.64 | 11.15 | 487.02 | 11.44 | 486.21 | 10.81 | .88 |
| T rated Ach 3 | 4.02 | 1.39 | 3.93 | 1.45 | 4.12 | 1.32 | 3.21 |
| T rated Eng 3 | 3.36 | .80 | 3.20 | .79 | 3.55 | .76 | 34.47*** |
| Cognitive Competence 3 | 2.77 | .68 | 2.81 | .67 | 2.71 | .70 | 3.53 |
| Liking 3 | -.22 | .73 | -.26 | .71 | -.18 | .74 | 2.14 |
| PAR 3 | -.13 | .97 | -.20 | 1.02 | -.05 | .92 | 4.14* |
*
Note: p < .005
**
p < .01
***
p < .001.
T rated Ach = Teacher-rated achievement; T rated Eng = Teacher-rated effortful engagement; Cognitive Competence = Perceived Cognitive Competence; PAR = Peer Academic Reputation; the numbers “2” and “3” in variable name refers to time of assessment.