Evaluating changes in sights can be a bit tricky. Sometimes any change will result in a temporary improvement. It’s a variation of the “Hawthorne Effect” recognized in production studies. In one experiment, researchers established a base line of production by a group of workers, then tried increasing light levels to improve visibility.

Production increased at first, then returned to previous levels. Researchers speculated the increase in production was not necessarily a result of better lighting. One theory was any change makes people more conscious of what they are doing and hence more efficient, at least until they get used to the change and revert to previous habits.

I’ve known competitors to make use of this phenomenon by making some minor change in equipment a week or two before a big match. A top action shooter, long since retired from competition, once told me this was an old trapshooters’ trick. He didn’t use the term Hawthorne Effect, his description was somewhat pithier. “It’s like getting a new girlfriend after being married for 10 or 15 years. You start paying attention to technique again.”

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