Table 1.
Coefficients of Pearson and partial correlations between BIS-Capacity, BIS-Speed, and BIS-Memory.
| r Memory-Speed | r Capacity-Speed | r Capacity-Memory | |
|---|---|---|---|
| Pearson correlation | .515 | .588 | .517 |
| Partial correlations controlled for… | |||
| 1. the third aspect of intelligence, respectively. | .305 (.182–.418) |
.438 (.326–.538) |
.309 (.187–.423) |
| 2. latent variable “selective attention” | .310 | .408 | .316 |
| 3. latent variable “sustained attention” | .266 | .459 | .322 |
| 4. latent variable “speed of decision making” | .318 | .409 | .315 |
| 5. latent variables “selective attention” and “sustained attention” | .271 | .433 | .333 |
| 6. latent variables “selective attention” and “speed of decision making” | .319 | .400 | .316 |
| 7. latent variables “sustained attention” and “speed of decision making” | .282 | .430 | .333 |
| 8. latent variables “selective attention”, “sustained attention”, and “speed of decision making” | .282 | .423 | .335 |
| 9. latent variables “basic speed” (constant factor loadings) | .325 | .426 | .303 |
| 10. all latent variables | .300 | .421 | .321 |
Note. All correlations were statistically significant (p < .001). Values in parentheses refer to the 95% confidence interval.