72) How well the predictions will be validated by later performance depends upon the amount, reliability, and appropriateness of the information used and on the skill and wisdom with which it is interpreted　　句子分析：第一、句子可以拆分为三段：How well the predictions will be validated by later performance / depends upon the amount, reliability, and appropriateness of the information used and on the skill and wisdom / with which it is interpreted　　第二、句子主干结构是：　　1)How well...引导的被动结构是主语从句，How well是主语从句中的状语前置，depends是句子谓语2)depends后面两个介词短语作并列宾语upon...and on... 3) the information used是名词+定语4)with which it is interpreted定语从句，先行词是the skill and wisdom，代词it指代the information　　第三、词的处理：　　be validated by 为……所证实　　depends upon 取决于　　reliability 可靠性　　appropriateness 适应性　　interpreted 解释　　完整的译文：　　72)这些测试在多大程度上为后来的表现所证实，这取决于所采用信息的数量、可靠性和适应性，以及解释这些信息的技能和才智。
　　

73) Whether to use tests, other kinds of information, or both in a particular situation depends, therefore, upon the evidence from experience concerning comparative validity and upon such factors as cost and availability.　　句子分析：　　第一、句子可以拆分为三段：Whether to use tests, other kinds of information, or both in a particular situation / depends, therefore, upon the evidence from experience concerning comparative validity / and upon such factors as cost and availability.　　第二、句子主干结构是：Whether to use..., or both...引导主语从句depends是句子谓语，upon... and upon...是并列结构的双宾语。　　第三、词的处理：　　Whether to..., or 是……还是……　　both 指代前句的tests, other kinds of information　　in a particular situation 在某一特定情况下　　therefore 因此　　the evidence from experience 经验依据　　concerning 与……有关的　　comparative validity 相对效度　　such factors as... 诸如……等因素　　完整的译文：　　73)因此，在某一特定情况下，究竟是采用测试还是其他种类的信息，或是两者兼用，须凭有关相对效度的经验依据而定，也取决于诸如费用和有无来源等因素。
　　

74) In general, the tests work most effectively when the qualities to be measured can be most precisely defined and least effectively when what is to be measured or predicted can not be well defined.　　句子分析：　　第一、句子可以拆分为四段：In general, the tests work most effectively / when the qualities to be measured can be most precisely defined / and least effectively / when what is to be measured or predicted can not be well defined.　　第二、句子的结构：　　1)主干结构是一个排比句the tests work most effectively when...and least effectively when...　　2)连词when引导的是状语从句，意思是当……的时候，从句中都是被动结构。　　3) what is to be measured or predicted是第二个从句的主语。　　第三、词的处理：　　In general 一般的说　　work most effectively 最为有效　　be most precisely defined 很精确界定　　measured 测定　　完整的译文：　　74)一般的说，当所要测定的特征能很精确界定时，测试最为有效；而当所要测定或预测的东西不能明确地界定时，测试的效果则最差。