166 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



Score is number right. 



Test 2. 

 Tests. 



1. Score is number right. 



2. Any incomplete item receives no credit. 



3. Count any item correct if intended plan is carried out. 

 between the crosses of items 2 and 4 in first part of line, etc. 



Disregard additional unnecessary marks, such as circles 



Test 4. 



1. Score is one-third of number of correct symbols. 



2. Use leniency in judging form of symbol. 



3. Credit symbol for 2 even though reversed. 



Teat 5. 



1. Score is right minus wrong (number of items checked that should be checked minus number of items checked 

 that should not be checked). 



2. If other clear indication is used instead of crosses, give credit. 



3. If numbers which should not be checked are marked by some other sign than is used to check similar pairs, 

 count as though not marked. 



4. If all items are checked, the score for the test is zero. 



Test 6. 



1. Score is number right. 



2. Allow much awkwardness in drawing. Writing in name of missing part or any way of indicating it receives 

 credit, if idea is clear. 



3. Additional parts do not make item wrong, if proper missing part is also inserted. 



4. Rules for individual items: 



Item 4. — Any spoon at any angle in right hand receives credit. Left hand, or unattached spoon, no credit. 



Item 5. — Chimney must be in right place. No credit for smoke. 



Item 6. — Another ear on same side as first receives no credit. 



Item 8. — Plain square, cross, etc., in proper location for stamp, receives credit. 



Item 10. — Missing part is the rivet. Line of " ear " may b omitted. 



Item 13. — Missing part is leg. 



Item 15. — Ball should be drawn in hand of man. If represented in hand of woman, or in motion, no credit. 



Item 16. — Single line indicating net receives credit. 



Item IS. — Any representation intended for horn, pointing in any direction, receives credit. 



Item 19. — Hand and powder puff must be put on proper side. 



Item tO. — Diamond is the missing part. Failure to complete hilt on sword is not an error. 



Test 7. 



1. Score is number right. 



2. Allow considerable awkwardness in drawing. 



3. Extra subdivisions, if not erased, make item wrong. 



4. Rules for individual items. 



Item 1. — Line of division may be slightly distant from true center, and need not be straight. 

 Item S. — Lines of semicircumference must start from or near corners of square. 

 Item 4- — Line must not start from corner. 



4. TOTAL SCORE AND RATING. 



The result of examination beta is expressed as a "total score," which is the sum of the raw scores of the several 

 tests. The raw scores are obtained as follows: 



Test. 



Total. 



Method of scoring. 



Half point for each half maze. 



Number right 



Number right 



One-third of number right 



Right minus wrong 



Number right 



Number right 



Maximum 

 score. 



5 

 16 



12 

 30 

 25 

 20 

 10 



