Psychometric Properties & Normative Data

Test: SRT – SPATIAL REASONING TEST

Lead Researcher: Marc A. Nydegger

Sample Statistics:

Standardization Sample (N): 63

Effective Range: < 96 – > 154 IQ (SD 15)

Reliability Analysis:

Internal Consistency (Cronbach’s α): 0.891

Composite Reliability (McDonald’s ω): 0.892

Validity Analysis:

g – loading: 0.399

Correlation r: 0.256

For a detailed breakdown of these psychometric metrics, see our Scores & Interpretation – page.