To aid in selecting men for occupational assignment, extensive data have been gathered on the range of intelligence scores found in various occupations. This material has been placed in the hands of the Personnel Officers for use in making assignments. It is suggested that those men who have an intelligence rating above the average in an occupation should be the first to be assigned to meet requirements in that occupation, and after that men with lower ratings should be considered. 6. In making assignments from the Depot Brigade to permanent organizations it is important to give each unit its proportion of superior, average, and inferior men. If this matter is left to chance there will inevitably be “weak links” in the army chain. Exceptions to this rule should be made in favour of certain arms of the service which require more than the ordinary number of mentally superior men; e. g., Signal Corps, Machine Gun, Field Artillery and Engineers. These organizations ordinarily have about twice the usual proportion of “A” and “B” men and very much less than the usual proportion of “D” and “D−” men. The first two columns in the following table illustrate the distribution of intelligence grades typical of infantry regiments and also the extreme differences in the mental strength of organizations which are built up without regard to intelligence ratings. The last column to the right shows a balanced distribution of intellectual strength which might have been made to each of these two regiments. ═════════════╤══════════════╤═══════════════════════════╤═════════════ INTELLIGENCE │INTERPRETATION│ ACTUAL DISTRIBUTION │ BALANCED RATING │ │ │DISTRIBUTION ─────────────┼──────────────┼─────────────┬─────────────┼───────────── │ │1st Regiment │2nd Regiment │ ─────────────┼──────────────┼─────────────┼─────────────┼───────────── A │Very Superior │ 1.0% │ 6.0% │ 3.5% B │Superior │ 3.0 │12.0 │ 7.5 C+ │High Average │ 7.0 │20.0 │13.5 C │Average │15.0 │28.0 │21.5 C− │Low Average │25.0 │19.0 │22.0 D │Inferior │31.0 │13.0 │22.0 D− │Very Inferior │18.0 │ 2.0 │10.0 ─────────────┴──────────────┴─────────────┴─────────────┴───────────── Unless intelligence is wisely distributed certain regiments and companies will take training much more slowly than others and thus delay the programme of the whole organization. 7. “D” and “D−” men are rarely suited for tasks which require special skill, resourcefulness, or sustained alertness. It is also unsafe to expect “D,” “D−” or “E” men to read or understand written directions. 8. Only high-score men should be selected for tasks that require quick learning or rapid adjustments.