To answer an analytical reasoning question on the LSAT, you need to formulate an answer based on a set of standards or relationships. This involves identifying what is explicitly stated, as well as applying direct statements to other situations.
The passages are not legally oriented, but require you to apply the same principles that lawyers do when crafting an argument, including the addition of new information to the given material. You will also be asked to substitute equivalent statements for given information and to make judgments based somewhat on your ability to use the information to make a prediction.
Logical reasoning questions on the LSAT involve analyzing, evaluating, and completing arguments using ordinary language and terms. You do not need to know complex legal terms like those used in legal arguments. You do need to be able to understand and use terms such as argument and conclusion.
The passages are not generally legal in content, but may be taken from numerous sources, including journals and other publications available to the public. Some passages are simply records of a conversation between two people in which there is a disagreement about an issue.
Reading comprehension questions on the LSAT are quite different and much more involved than those on a typical reading comprehension test. The idea is to see if you can read and comprehend material that is as complex as that which you will encounter in law school and in the actual practice of law. This includes material with which you are not expected to be familiar, but should be able to dissect in order to find answers to the questions.