Table 2.
Correlations with Age, by Test, Score Type, and k Coefficient.
| Efficiency Score Type | ADT | ER40 | CPW | VOLT | PLOT |
|---|---|---|---|---|---|
| Itemwise Sum (k = .1) | .44 | .39 | .14 | .07 | .39 |
| Itemwise Sum (k = .3) | .44 | .40 | .18 | .08 | .39 |
| Itemwise Sum (k = .5) | .42 | .43 | .24 | .10 | .38 |
| Itemwise Sum (k = .7) | .35 | .46 | .32 | .12 | .36 |
| Itemwise Sum (k = .8) | .25 | .46 | .37 | .14 | .33 |
| Itemwise Sum (k = .9) | .10 | .45 | .41 | .14 | .23 |
|
| |||||
| Ratio Method (score/RT ratio) | .33 | .47 | .43 | .16 | .34 |
| Mean-z-score Method | .36 | .45 | .35 | .17 | .28 |
|
| |||||
| Pure Accuracy | .45 | .29 | .17 | .07 | .38 |
| Pure Speed | .05 | .36 | .42 | .17 | .03 |
Note. All correlations significant at the p < .05 level; Max correlations within each efficiency score type combination bolded; ADT = Age Differentiation Task; ER40 = Emotion Recognition Task; CPW = Word Memory Task; PLOT = Penn Line Orientation Task; VOLT = Visual Object Learning Test; Score/RT = total correct divided by median reaction time.