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.
Test 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.