Table 5.
Correlations of Mean and Within-Person Standard Deviation With Age, Study 1 (N = 90)
| Age correlations |
|||||
|---|---|---|---|---|---|
| Variable | Correlation M.SD |
M | M.SD | SD | SD.M |
| Vocabulary | −.55 | .11 | .14 | .07 | .13 |
| Picture vocabulary | −.15 | .13 | .13 | −.02 | .00 |
| Synonym vocabulary | −.16 | .26 | .26 | −.04 | .00 |
| Antonym vocabulary | −.06 | .18 | .18 | −.14 | −..13 |
| Matrix reasoning | .22 | −.63 | −.61 | −.14 | .00 |
| Letter sets | −.25 | −.41 | −.40 | .05 | −.06 |
| Shipley | −.15 | −.57 | −.56 | .02 | −.00 |
| Spatial relations | .06 | −.63 | −.62 | −.09 | −.07 |
| Paper folding | −.19 | −.66 | −.64 | .18 | .07 |
| Form boards | .62 | −.69 | −.44 | −.50 | −.10 |
| Recall | −.38 | −.60 | −.53 | .25 | .03 |
| Logical memory | −.22 | −.43 | −.43 | .01 | −.09 |
| Paired associates | −.08 | −.54 | −.55 | −.08 | −.15 |
| Digit symbol | .13 | −.70 | −.68 | −.19 | −.14 |
| Letter comparison | .18 | −.55 | −.53 | −.10 | −.00 |
| Pattern comparison | .20 | −.69 | −.66 | −.30 | −.22 |
Note. M.SD refers to the correlation with the mean after statistically controlling the variance in the standard deviation, and SD.M refers to the correlation with the standard deviation after statistically controlling the variance in the mean.