Raw Score = Total Correct Answers (out of 126)
The test is rooted in Thurstone’s theory of , which posits that intelligence is not a single general factor (“g”) but comprises several independent latent abilities, including verbal comprehension, word fluency, number facility, spatial visualization, associative memory, perceptual speed, and reasoning. The TMA primarily draws upon perceptual speed , numerical facility , and verbal reasoning . 2. Test Structure and Content The Thurstone Test of Mental Alertness is typically a timed, paper-and-pencil (or computer-based) multiple-choice test. It is divided into two main sections, with a total of approximately 126 items to be completed in 20 minutes . Section 1: Perceptual Speed and Accuracy (approx. 70 items, 8 minutes) This section tests the ability to rapidly compare and match letters, numbers, and simple symbols. It does not require complex reasoning—only visual discrimination and speed. thurstone test mental alertness
| Percentile | Raw Score (Out of 126) | Interpretation | |------------|------------------------|----------------| | 95 | 110+ | Very High Alertness | | 75 | 95–109 | Above Average | | 50 | 80–94 | Average | | 25 | 65–79 | Below Average | | 10 | Below 65 | Low Alertness | Raw Score = Total Correct Answers (out of