THE EFFECT OF INCREASING THE DIFFICULTY OF THE RPA TEST OF NIGHT VISION
Interval rept. no. 3
NAVAL MEDICAL RESEARCH LAB NEW LONDON CT
Pagination or Media Count:
Results obtained on a group of 446 men given both the standard Radium Plaque Adaptometer test and also the same test at a brightness .20 log units lower than the standard, indicate that a much larger percentage of men will necessarily fail the test if the brightness is lowered. Classification based on a more difficult test has the same statistical properties as that based on the regular test, and consequently will doubtless be no more reliable.
- Personnel Management and Labor Relations
- Anatomy and Physiology
- Medicine and Medical Research