State problem (_a_) orally, repeating it if S. does not respond promptly. Do not allow S. to use pencil or paper, and ask him to give his solution orally as he works it out. Record his statement in full. If S. resorts to some such method as "fill the 3-pint vessel two-thirds full," or "I would mark the inside of the 5-pint vessel so as to show where 4 pints come to," etc., inform him that such a method is not allowable; that this would be guessing, since he could not be sure when the 3-pint vessel was two-thirds full, or whether he had marked off his 5-pint vessel accurately. Tell him he must measure out the water without any guesswork and explain also that it is a fair problem, not a "catch." Say nothing about pouring from one vessel to another, but if S. asks whether this is permissible, say "yes." If S. has not solved (_a_) correctly within five minutes, explain the solution in full and proceed to (_b_). State (_b_) orally and allow S. five minutes for its solution. Do not explain in case of failure. If S. succeeds on either (_a_) or (_b_), but not with both, give problem (_c_) orally, allowing five minutes for this also. (_a_) "A mother sent her boy to the river and told him to bring back exactly 7 pints of water. She gave him a 3-pint vessel and a 5-pint vessel. Show me how the boy can measure out exactly 7 pints of water, using nothing but these two vessels and not guessing at the amount. You should begin by filling the 5-pint vessel first. Remember, you have a 3-pint vessel and a 5-pint vessel, and you must bring back exactly 7 pints." Same formula for (_b_) 5 and 7, get 8. Begin with 5; and (_c_) 4 and 9, get 7. Begin with 4. Credit if two of the three problems are solved correctly, each within five minutes. _Vocabulary_ "I want to find out how many words you know. Listen; and when I say a word, you tell me what it means. What is an orange?" etc. If S. can read, let him see the words on the vocabulary lists. Continue in each list till 6 or 8 successive words have been missed. If S. thinks formal definition is required, say: "Just tell me in your own words; say it any way you please. All I want is to find out whether you know what a ---- is." May ask S. to explain what he means if it is not clear.