Though the authors base their suggestion on theoretical analysis, they back up their musings with practical testing generating empirical results. The authors explain that when people sign a form after intentionally filling it out erroneously, they are more likely to “engage in various mental justifications, reinterpretations, and other ‘tricks’ such as suppressing thoughts about their moral standards that allow them to maintain a positive self-image despite having lied.” In contrast, signing the form before filling it out “makes morality accessible right before it is most needed, which will consequently promote honest reporting.”
When I read this explanation, my first thought was that in other circumstances people are required to affirm the truth before providing information. The example that popped into my head was the treatment of witnesses in litigation. They are sworn in before they testify. Aside from the theoretical impact, there is a practical advantage, especially for the attorney engaged in cross-examination, arising from the ability to remind the witness that he or she is under oath.
So why not do this for a tax return? As a practical matter, would people refrain from signing until after they fill it out? Possibly, if the return is in paper format. But as the tax system shifts to what will be an entirely digital process, it would be rather easy to compel a taxpayer to sign and affirm to truth before permitting tax items and other information to be entered into the relevant fields.
Even in less formal situations, people often stress the need for honesty before getting into the facts. Consider a parent who is attempting to determine what happened while he or she was out of the room. It is not unusual for the parent to preface questions with a reminder that truth-telling is important.
The change would not be difficult to make. It’s a matter of rearranging the paper form, and modifying a few lines of code in tax return preparation software. Finding a way to tell people, on tax or other forms, that “telling the truth is important” make sense. In a era when truth-telling finds less favor among some segments of society, there is no good reason to refrain from reminding people that without truth all else, not just revenue, is lost.
EDIT: Reader Morris, who is the reader mentioned in the first paragraph of this commentary, has let me know that back in 2021 the cited paper was retracted. After doing some research, I learned that the retraction occurred because another set of authors questioned the validity of the data used to conclude that the place of signing had an impact on the amount of fraud. Reader Morris asked me if it changed my mind on whether tax forms should be signed at the beginning rather than the end. It might still be a good idea, considering that witnesses are sworn in before being questioned and many parents remind children of the need for truth telling before questioning them, but considering the absence of proof that the place of signing makes a difference, changing tax forms or software isn't worth the cost.
NOTE: I have cited thousands of articles, reports, and stories in my blog commentaries. Once the commentary is published, I do not periodically review whether those items have been retracted because it would be logistically difficult and extremely time consuming. If I happen to notice a retraction or, more likely, an update, then if the change is impactful I publish something or, as in this case, add notations to the original commentary. In this instance, reader Morris just happened to find the retraction when he was researching a related subject. Interestingly, as I tried to find the reason for the retraction, I found a number of commentaries and reports that cite the paper without any mention of the retraction. That raises another question. When a paper or story is retracted, do the authors or publishers (or both) have a duty to send a notice to every website, blog, social media posting, or other publication avenue that quoted, cited, or referred to the retracted item? No, they do not, which leaves a gaping hole in the information world and surely helps accelerate the spread of misinformation. Perhaps once the world is entirely digital some sort of automatic system can function to accomplish the "chasing down" of a retracted item.