Passage Summary: A study found that secretaries who say they love their jobs are also the ones their bosses think are doing a great job, so clearly, liking the job is what makes them good at it.

Conclusion: The high job performance of certain secretaries was caused by their positive attitudes toward their work.

Reasoning: A survey found a correlation between secretaries who reported very positive attitudes and those who were rated as excellent workers by their supervisors.

Analysis: The argument falls into the classic trap of assuming that because two things happen together, one must cause the other. It is just as possible that being good at one's job leads to a positive attitude, or that a third factor—like high pay or a great office environment—causes both. When you see a correlation in a stimulus, your 'flaw' radar should immediately look for an answer choice that suggests the causal relationship might be reversed or influenced by an outside variable. It's the 'chicken or the egg' problem, but with spreadsheets and word processing.