by christine.defenbaugh Thu Jul 24, 2014 2:08 pm
Brilliant explanation, menon92!
You're absolutely right that the first stop should be to read the relevant sentence and capture any contextual clues there as to the true meaning of the word. In many questions of this type, the full meaning of the word can be understood from the sentence itself, just by looking at how it's really being used - this is common for words with a variety of connotations that could have potentially been used in a number of different ways (such as "reflective", "restrained", or "suspicious"). The question is demanding, in those cases, that you identify the specific connotations in this particular context.
This question, though, is a little different. The meaning of "head" here is not something that would be immediately apparent. This is not a standard definition, or connotation, of that word in normal, common usage. Instead, this is an instance of jargon, or technical terminology relating to a specific activity or context. The author (and the LSAT) does not expect you to have any idea what "head" means, just by reading the context surrounding the word, so we might have anticipated that this word would actually be technically defined elsewhere in the passage. Generally, jargon like this is defined the first time the term appears in the passage.
On that note, whenever jargon DOES appear (and gets defined!), it's a good idea to at least make a mental note of that, as the definition will surely be important later. Even if there isn't a specific question like this one, knowing the definition of "head" is necessary to actually understand any later sentence in the passage that uses that word!
Keep up all the great work!