Table 1
Descriptive statistics of the norm scores of Study 1.
| VCI | PRI | WMI | PSI | FS_IQ | NLV_IQ | |
|---|---|---|---|---|---|---|
| Valid | 30 | 30 | 30 | 30 | 30 | 30 |
| Mean | 101.967 | 105.567 | 104.833 | 93.467 | 102.133 | 93.600 |
| Std. Deviation | 11.312 | 10.621 | 15.412 | 16.126 | 12.153 | 7.356 |
| Minimum | 81 | 87 | 83 | 66 | 79 | 78 |
| Maximum | 124 | 127 | 143 | 122 | 123 | 114 |
[i] Verbal Comprehension (VCI), Perceptual Reasoning (PRI), Working Memory (WMI) and Processing Speed (PSI), WAIS-IV Full-Scale IQ (FS_IQ), NLV-generated IQ-score estimate (NLV_IQ).
Figure 1
Scatterplot of the correlation between the NLV-generated IQ-score estimate (i.e., norm score) and the WAIS-IV Full-Scale IQ of Study 1. Note that the residuals (i.e., the distance of each data-point to the regression line) range from –18.857 to 23.452 (with a standard deviation of 11.807), indicating the imprecision of the NLV to estimate the WAIS-IV IQ.
Table 2
The Pearson correlations of Study 1.
| N | PEARSON’S R | P | LOWER 95% CI | UPPER 95% CI | |||
|---|---|---|---|---|---|---|---|
| Norms | |||||||
| NLV-IQ | – | VCI | 30 | .175 | .355 | –.167 | .521 |
| NLV-IQ | – | PRI | 30 | .097 | .612 | –.236 | .450 |
| NLV-IQ | – | WMI | 30 | .298 | .110 | –.069 | .635 |
| NLV-IQ | – | PSI | 30 | .136 | .474 | –.160 | .467 |
| NLV-IQ | – | FSIQ | 30 | .237 | .207 | –.112 | .581 |
| Raw data (z-scores) | |||||||
| NLV | – | VCI | 30 | .132 | .487 | –.220 | .455 |
| NLV | – | PRI | 30 | .112 | .556 | –.238 | .464 |
| NLV | – | WMI | 30 | .341 | .065 | –.032 | .620 |
| NLV | – | PSI | 30 | .167 | .377 | –.113 | .439 |
| NLV | – | FSIQ | 30 | .248 | .187 | –.098 | .563 |
[i] Note: For all tests, the alternative hypothesis specifies that the correlation is positive, CI refers to the credible interval. NLV-generated IQ-score estimate (NLV-IQ), WAIS-IV Full-Scale IQ (FSIQ), Verbal Comprehension (VCI), Perceptual Reasoning (PRI), Working Memory (WMI) and Processing Speed (PSI).
Table 3
Descriptive statistics of the norm scores of Study 2.
| VCI | PRI | WMI | PSI | FS_IQ | NLV_IQ | |
|---|---|---|---|---|---|---|
| Valid | 51 | 49 | 51 | 51 | 49 | 51 |
| Mean | 104.392 | 101.429 | 99.765 | 105.843 | 103.633 | 103.353 |
| Std. Deviation | 12.025 | 14.487 | 14.133 | 13.584 | 12.950 | 10.709 |
| Minimum | 79 | 75 | 61 | 78 | 77 | 84 |
| Maximum | 131 | 135 | 129 | 138 | 129 | 124 |
[i] Verbal Comprehension (VCI), Perceptual Reasoning (PRI), Working Memory (WMI) and Processing Speed (PSI), WAIS-IV Full-Scale IQ (FS_IQ), NLV-generated IQ-score estimate (NLV_IQ).
Figure 2
Scatterplot of the correlation between the NLV-generated IQ-score estimate (i.e., norm score) and the WAIS-IV Full-Scale IQ of Study 2. Note that the residuals (i.e., the distance of each data-point the regression line) range from -28.405 to 26.007 (with a standard deviation of 11.515), indicating the imprecision NLV to estimate the WAIS-IV IQ.
Table 4
The Pearson correlations of Study 2.
| N | PEARSON’S R | P | LOWER 95% CI | UPPER 95% CI | |||
|---|---|---|---|---|---|---|---|
| Norms | |||||||
| NLV-IQ | – | VCI | 51 | .411 | .003 | .202 | .607 |
| NLV-IQ | – | PRI | 49 | .207 | .153 | –.134 | .505 |
| NLV-IQ | – | WMI | 51 | .404 | .003 | .156 | .596 |
| NLV-IQ | – | PSI | 51 | .433 | .002 | .167 | .652 |
| NLV-IQ | – | FSIQ | 49 | .457 | <.001 | .175 | .671 |
| Raw data (Z-scores) | |||||||
| NLV | – | VCI | 51 | .523 | <.001 | .294 | .704 |
| NLV | – | PRI | 49 | .268 | .062 | –.054 | .532 |
| NLV | – | WMI | 51 | .426 | .002 | .211 | .590 |
| NLV | – | PSI | 51 | .444 | .001 | .152 | .655 |
| NLV | – | FSIQ | 49 | .549 | <.001 | .263 | .748 |
[i] Note: For all tests, the alternative hypothesis specifies that the correlation is positive, CI refers to the credible interval. NLV-generated IQ-score estimate (NLV-IQ), WAIS-IV Full-Scale IQ (FSIQ), Verbal Comprehension (VCI), Perceptual Reasoning (PRI), Working Memory (WMI) and Processing Speed (PSI).