Table 1
Mean Performance Scores as a Function of Grade and Academic Stream.
| VARIABLE | GRADE 4 | GRADE 8 | ||
|---|---|---|---|---|
| MAINSTREAM M (SD) | GIFTED M (SD) | MAINSTREAM M (SD) | GIFTED M (SD) | |
| Age | 9.86 (0.38) | 9.78 (0.30) | 13.80 (0.26) | 13.61 (0.33) |
| N-back | ||||
| 0-back prop. correct | 0.91 (0.08) | 0.91 (0.08) | 0.94 (0.07) | 0.94 (0.06) |
| 1-back prop. correct | 0.72 (0.15) | 0.81 (0.20) | 0.78 (0.14) | 0.83 (0.08) |
| 2-back prop. correct | 0.47 (0.15) | 0.50 (0.15) | 0.49 (0.21) | 0.72 (0.21) |
| SOPT mean span | 4.36 (0.82) | 4.46 (0.86) | 4.91 (1.00) | 5.06 (0.82) |
| 6 stimuli | 3.65 (0.87) | 3.80 (0.90) | 4.09 (0.73) | 4.16 (0.64) |
| 8 stimuli | 4.44 (1.29) | 4.56 (1.35) | 4.86 (1.29) | 5.14 (1.23) |
| 10 stimuli | 5.00 (1.37) | 5.01 (1.63) | 5.79 (1.92) | 5.89 (1.51) |
| U-SOPT mean span | 2.61 (1.09) | 3.08 (1.02) | 3.98 (1.22) | 3.98 (1.18) |
| 6 stimuli | 2.14 (1.02) | 2.65 (1.10) | 3.27 (1.15) | 3.37 (1.17) |
| 8 stimuli | 3.09 (1.55) | 3.50 (1.46) | 4.68 (1.41) | 4.60 (1.68) |
| FIT M-score | 4.36 (1.18) | 5.43 (1.40) | 6.14 (1.56) | 6.89 (0.94) |
| DFT M-score | 4.59 (0.73) | 5.18 (0.77) | 5.36 (0.85) | 6.16 (1.30) |
| CNT efficiency | 0.41 (0.25) | 0.44 (0.18) | 0.48 (0.22) | 0.73 (0.21) |
| Trial 1 | 4.84 (1.03) | 5.23 (0.91) | 6.65 (0.78) | 6.75 (1.02) |
| Trial 2 | 4.24 (1.08) | 4.27 (0.94) | 5.50 (1.06) | 5.97 (1.00) |
| Trial 3 | 1.70 (0.60) | 1.74 (0.54) | 1.92 (0.66) | 2.71 (0.67) |
| Trial 4 | 1.08 (0.65) | 1.18 (0.45) | 1.36 (0.69) | 2.01 (0.55) |
| Antisaccade prop. correct | 0.68 (0.15) | 0.74 (0.14) | 0.79 (0.18) | 0.89 (0.08) |
[i] Note: 0-back = 0-back level of the n-back Task; 1-back = 1-back level of the n-back Task; 2-back = 2-back level of the n-back Task; SOPT = Self-Ordered Pointing Task; U-SOPT = Updating Self-Ordered Pointing Task; FIT = Figural Intersections Task; DFT = Direction Following Task; CNT = Contingency Naming Task.
Table 2
Correlations between Tasks as a Function of Academic Stream, with Age Partialled.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ||
|---|---|---|---|---|---|---|---|---|---|
| 1. | FIT M-Score | – | .37* | .92** | .37* | .54** | .35* | .40** | .27 |
| 2. | DFT M-score | .14 | – | .71** | .29 | .40** | .41** | .42** | .30 |
| 3. | Mean M-score | .81** | .70** | – | .41** | .58** | .45** | .48** | .33* |
| 4. | 2-back prop. correct | .15 | .21 | .23 | – | .36* | .08 | .38* | .46** |
| 5. | SOPT span score | .21 | -.04 | .13 | .15 | – | .38* | .41** | .16 |
| 6. | U-SOPT span score | .21 | .20 | .27 | .19 | .27 | – | .32* | .10 |
| 7. | CNT total efficiency | .23 | .09 | .22 | .02 | .08 | .29* | – | .33* |
| 8. | Antisaccade prop. correct | .21 | -.13 | .08 | .28 | .23 | -.02 | .10 | – |
[i] Note: Correlations coefficients for mainstream sample (n = 44) are presented above the diagonal, and coefficients for gifted sample (n = 47) are presented below the diagonal. FIT = Figural Intersections Test; DFT = Direction Following Test; Mean M-score = average of FIT and DFT; 2-back = 2-back level of the n-back Task; SOPT = Self-Ordered Pointing Task; U-SOPT = Updating Self-Ordered Pointing Task; CNT = Contingency Naming Task. *p < .05. **p < .01.
Figure 1
N-back mean proportion correct target identifications, as a function of grade, academic stream, and n-back condition. Error bars represent standard errors.
Figure 2
Contingency Naming Task (CNT) efficiency score, as a function of grade and CNT trial. Error bars represent standard errors.