NIT-Form 1, developed around 2012, was one of the predecessors of NAIT and remained in use for approximately 3 years.
It was an untimed, 115-item heterogeneous test that included numerical, verbal, logical, abstract, and spatial questions.
During that time, it was accepted as an admission tool by several high-IQ societies, including the SPIQR Society, the Real IQ Society, the Global Genius Generation Group, the High Intellect Society, and WIQF.
Below you can find the final statistics from the test before it was officially discontinued.
| Test or subtest | N | Lowest raw score | Highest raw score | Mean | Median | Raw score standard deviation | Quartile deviation | Skewness | Excess Kurtosis | Cronbach's alpha | Split-half reliability index | Spearman–Brown corrected |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NIT-Form 1 | 44 | 45 | 104.5 | 76.97 | 76.5 | 13.67 | 8.81 | -0.28 | -0.08 | 0.92 | 0.87 | 0.93 |
| Abstract | 101 | 3.5 | 21.5 | 15.95 | 16.5 | 3.3 | 2 | -0.78 | 1.04 | 0.76 | 0.64 | 0.78 |
| Numerical | 92 | 1.5 | 23 | 17.74 | 18.5 | 3.66 | 1.75 | -1.89 | 4.69 | 0.84 | 0.74 | 0.85 |
| Verbal | 64 | 6 | 24 | 17.89 | 17.5 | 3.81 | 2.63 | -0.64 | 0.21 | 0.79 | 0.67 | 0.81 |
| Logical | 65 | 3 | 22 | 14.37 | 15 | 3.84 | 2.5 | -0.61 | 0.26 | 0.79 | 0.67 | 0.80 |
| Spatial | 84 | 0.5 | 20 | 10.05 | 10 | 4.12 | 3 | 0.11 | -0.37 | 0.8 | 0.68 | 0.81 |
| Test or subtest | Number of items | Good items | Average Items | Suspicious items | Bad items | Unsolved items | Overall quality (%) |
|---|---|---|---|---|---|---|---|
| NIT-Form 1 | 115 | 84 | 23 | 4 | 4 | 0 | 78.1 |
| Abstract | 22 | 19 | 2 | 1 | 0 | 0 | 83.2 |
| Numerical | 23 | 20 | 2 | 0 | 1 | 0 | 86.0 |
| Verbal | 26 | 20 | 4 | 1 | 1 | 0 | 79.2 |
| Logical | 22 | 15 | 6 | 1 | 0 | 0 | 78.3 |
| Spatial | 22 | 10 | 9 | 1 | 2 | 0 | 65.3 |
| Test or subtest | Range | Resolution | Sample-dependent hardness | Sample-independent hardness | Standard error of measurement |
|---|---|---|---|---|---|
| NIT-Form 1 | 60.5 | 18.88 | 0.33 | 0.36 | 3.78 |
| Abstract | 19 | 4.25 | 0.25 | 0.27 | 1.63 |
| Numerical | 22.5 | 3.5 | 0.2 | 0.14 | 1.45 |
| Verbal | 19 | 2.88 | 0.33 | 0.31 | 1.74 |
| Logical | 20 | 3 | 0.32 | 0.40 | 1.75 |
| Spatial | 20.5 | 6 | 0.55 | 0.65 | 1.84 |
| Abstract | Numerical | Verbal | Spatial | Logical | |
|---|---|---|---|---|---|
| Abstract | 1 | 0.666 | 0.670 | 0.527 | 0.474 |
| Numerical | 0.666 | 1 | 0.685 | 0.785 | 0.755 |
| Verbal | 0.670 | 0.685 | 1 | 0.732 | 0.779 |
| Spatial | 0.527 | 0.785 | 0.732 | 1 | 0.380 |
| Logical | 0.474 | 0.755 | 0.779 | 0.380 | 1 |
| Numerical subtest | 0.920 |
| Verbal subtest | 0.914 |
| Spatial subtest | 0.812 |
| Logical subtest | 0.803 |
| Abstract subtest | 0.783 |
Variance explained by g (first principal component): 0.720, meaning 72% of the total variance in subtests is accounted for by the general factor.
Method used for computing g-loadings: Principal Component Analysis (PCA) applied to the subtest correlation matrix; the first unrotated principal component was interpreted as g.