Skip to main content
Category: Laws
Type: Popular maxim about confidence and performance
Origin: Chinese management compilations. No dated speech by a verified D. Dugan was found.
Also known as: No second name. Some English retellings spell it Duggan’s Law.
Quick Answer — Dugan’s Law is the circulating claim that the person who is already strong is not necessarily the winner, and that a confident stance toward a still-unknown task and the strength that shows up later reinforce each other. Chinese compilations attribute the sentence to D. Dugan, called a former chairman of an American professional football body. The Pro Football Hall of Fame’s list of people who headed the NFL does not include that name. The usable core is narrower. Given skill and a reason to act, the belief that you can execute the next attempt changes whether you start and how long you continue, and the attempt then revises the belief.

What is Dugan’s Law?

Dugan’s Law is a popular maxim that present strength and later victory are not the same fact. Confidence while the result is still unknown, and the capability that the attempt builds, reinforce each other.
The strong are not necessarily the winners, but sooner or later victory belongs to the people who have confidence.
That sentence is the line printed by the MBA智库百科 entry read for this page. The entry names the proposer as D·杜根, former chairman of the 美国职业橄榄球联会. It does not print a date, a speech, or a book. This page does not treat the line as a recovered quotation. The same entry adds a second claim: if you accept only the best, you often end with the best, as long as you have confidence. That sentence is an instruction about standards. The entry reports no comparison of people who did and did not follow it. The mutual loop has a researched neighbor, and it is not a football office. In 1977 Albert Bandura, at Stanford University, defined an efficacy expectation as the conviction that one can successfully execute the behavior required to produce the outcomes. An outcome expectation is the separate estimate that the behavior will lead to certain outcomes. On the next page he wrote that mastery expectations influence performance and are, in turn, altered by the cumulative effects of one’s efforts. He also wrote that this is not a claim that expectation is the sole determinant. Expectation alone will not produce the performance if the component capabilities are lacking. Growth Mindset is the belief that ability can be built. Self-Fulfilling Prophecy is an expectation that changes the later record. Dugan’s Law, on this page, is the narrower stance: while the result is unknown, commit to the next attempt you can actually execute, then let the result revise the belief. Overconfidence Effect is what remains when the belief is never checked against a hit.

Dugan’s Law in 3 Depths

  • Beginner: A hard task still undone is not proof that you lack the strength. The useful question is whether you will make the next attempt while the result is unknown.
  • Practitioner: Write the next attempt, do it, and update the belief from the result. Keep “I can execute this step” separate from “the prize is already mine.”
  • Advanced: The loop runs only when skill and a reason to act are already there. A confident reading of a thin story is a different page. A sticky name is not a source.

Origin

Dugan’s Law circulates as a named sentence in Chinese management encyclopedias. The MBA智库百科 entry read for this page prints the winners line and the office. It prints neither a year for the sentence nor a place where it was said. The Pro Football Hall of Fame page “NFL Commissioners and Presidents,” dated 16 September 2020, lists the people who have headed the NFL since its founding in 1920. Presidents: Jim Thorpe, 1920; Joe Carr, 1921–1939; Carl Storck, 1939–1941. Commissioners: Elmer Layden, 1941–46; Bert Bell, 1946–1959; Pete Rozelle, 1960–1989; Paul Tagliabue, 1989–2006; Roger Goodell, 2006–present. A note says NFL treasurer Austin Gunsel served as president in the office of the commissioner after Bell’s death on 11 October 1959 until Rozelle’s election on 26 January 1960. No Dugan is on that list. This page therefore treats the maxim as a circulating sentence, not as a finding dated to a verified official. Stigler’s Law of Eponymy is the neighboring warning. A name that sticks is a handle. It is not, by itself, a record of who said the sentence first. The loop the maxim wants is the one Bandura stated. The paper is “Self-efficacy: Toward a unifying theory of behavioral change,” Psychological Review 84, number 2, 1977, pages 191–215. The byline is Stanford University. The definition of an efficacy expectation is on page 193. The mutual sentence, and the warning that expectation is not the sole determinant, are on page 194. Page 195 lists four sources of efficacy information: performance accomplishments, vicarious experience, verbal persuasion, and physiological states. Performance accomplishments are called especially influential because they are based on personal mastery experiences. Successes raise mastery expectations. Repeated failures lower them, particularly if the mishaps come early. Figure 2 on that page labels the fourth source emotional arousal. This page follows the prose, which says physiological states, and does not treat the figure label as a fifth source.

Key Points

Four distinctions keep the maxim from turning a stance into a promise.
1

Present strength and the next attempt are different facts

The compilation’s sentence separates the person who already looks strong from the person who will still act while the result is unknown. A ranking of talent does not tell you which of those two you are facing. The groundsman in the case below judged a 17-year-old’s build. The later run was a different fact.
2

The belief and the performance revise each other

Bandura’s page 194 sentence is the mechanism: mastery expectations influence performance and are altered by the cumulative effects of one’s efforts. People who keep going in a threatening activity that is in fact relatively safe gain corrective experiences that reinforce the belief. People who stop early keep the old fear. The arrow runs both ways. It does not run from a mood to a prize.
3

Separate the step from the prize

Page 193 separates the two beliefs. “I can execute this behavior” is an efficacy expectation. “This behavior will bring the outcome I want” is an outcome expectation. A person can hold the second and still withhold the first. Only the first changes whether the attempt starts. Wanting the best, which is the encyclopedia’s second sentence, is not the same belief.
4

A finished attempt teaches more than a pep talk

Of the four sources on page 195, performance accomplishments are the influential one because they are the person’s own mastery. Watching someone else, being told you can, and reading your nerves are weaker information. Early repeated failure lowers the expectation. After repeated success, an occasional failure has less force, and a failure that is later overcome can strengthen persistence. A speech is not that record.

Applications

Use the maxim as a rule for the next attempt. Do not use it as a score of character.

Study the next problem, not the rank

Before a hard assignment, write the one step you can finish today and the result that would count as done. Afterward, change the belief to match that result. A feeling of unreadiness before the step is not the result.

Staff the unknown task, then check the work

When two people are close in skill, notice who will start while the outcome is still open. Then read the work. Stated confidence is not the work. Do not hire, promote, or fund on the sentence alone.

Coach the attempt, not the label

Tell a learner the next rep and what “done” looks like. Pygmalion Effect is someone else’s high expectation. Golem Effect is someone else’s low one. Neither replaces the rep.

Put the last measurement beside the claim

In a meeting, ask for the last finished attempt and its number before anyone treats a confident plan as a forecast. If there is no attempt yet, the plan is a stance, not a result.

Case Study

On the afternoon of 6 May 1954, at the Iffley Road track in Oxford, a 25-year-old medical student ran the mile in the Oxford University versus Amateur Athletic Association match. The account here is the World Athletics Heritage article by Simon Turnbull, published 6 May 2024, which quotes Roger Bannister’s book First Four Minutes. This page did not re-read the book. The sentences below are that article’s quotations. In 1946, at 17, in his first year at Exeter College, Bannister took laps on what was then a 330-yard circuit run clockwise. The groundsman told him, “You just haven’t got the strength or the build for it.” Eight years later the same track was the place of the attempt. As president of the Oxford University Athletics Club he had already pushed the track through a rebuild to the standard 440 yards, run anti-clockwise. By 1954 he trained on weekday lunch breaks from St Mary’s Hospital in London, and at weekends with Chris Brasher and Chris Chataway, under Brasher’s coach Franz Stampfl. He had taken up interval training: series of 10 repetitions of 400 meters, with two minutes of recovery, from an average of 66 seconds down to 58 seconds. The question that afternoon was whether he would start. A gale made him think of postponing. He went ahead when the flag on a nearby church stopped fluttering wildly. Brasher led. The first lap was 57.5. Bannister shouted for a faster pace. Brasher did not change it. The half mile passed in 1:58. A voice shouted “Relax.” Bannister learned afterward that it was Stampfl. At three quarters the time was 3:00.7. Chataway led around the next bend. Bannister passed him at the beginning of the back straight, 300 yards from the finish. He wrote that he drove on, impelled by a combination of fear and pride.
I knew that I had done it before I even heard the time.
Norris McWhirter began the announcement with “Three minutes,” and the rest was lost in the roar. The time was 3:59.4. The 2024 article calls that an advancement on the nine-year-old world record of 4:01.4 held by the Swede Gunder Hägg, and says Bannister’s figures survived as a world record for 46 days. A separate World Athletics article, published 6 May 2004, names the next mark: John Landy, on 21 June 1954, in Turku, Finland, ran 3:57.9, rounded to 3:58.0 under the IAAF rules then in effect. The same 2004 article says almost 1,000 men had by then joined Bannister under four minutes. This page does not update that count, and it does not treat “almost 1,000” as a one-year total. The groundsman’s sentence in 1946 was a judgment of build. The 1954 run was a prepared attempt made while the clock was still unread, with fear still in Bannister’s own line. Landy’s mark 46 days later is the other half of the loop: a finished time that other prepared runners could use. Pacemakers, the rebuilt track, the repetitions, Stampfl, and the drop in the wind were part of the afternoon. The stance did not replace them. Do not export 3:59.4, 57.5, 1:58, 3:00.7, 66 seconds, or 58 seconds onto a class, a shop, a household, or a hiring meeting.

Boundaries and Failure Modes

Dugan’s Law fails when the stance is asked to supply a skill that is not there, or when a correlation is told as a promise. The first boundary is Bandura’s own, on page 194. Expectation alone will not produce the desired performance if the component capabilities are lacking. He adds that people can be sure of success at things they still do not do, because they have no incentive. Given appropriate skills and adequate incentives, efficacy expectations are a major determinant of the choice of activities, of how much effort is spent, and of how long effort is sustained. “Major” is his word. It is not “only.” The second boundary is a later count of the association, not a test of this maxim. Alexander D. Stajkovic and Fred Luthans, Psychological Bulletin 124, number 2, 1998, pages 240–261, report in the abstract a meta-analysis of 114 studies, k = 157, N = 21,616. The weighted average correlation between self-efficacy and work-related performance is .38. The abstract also reports significant heterogeneity among the individual correlations. The authors partitioned those correlations first by task complexity, low, medium, and high, and then by setting, simulated laboratory versus actual field. The subgroup correlations are not on this page. The PDF was not re-read. The .38 is not a success rate, not a share of one person’s result, and not evidence that confidence causes the performance. Yerkes-Dodson Law is a different curve, about arousal and performance. Raising the volume of a pep talk is not this page. The common misuse is to read stated confidence as proof of ability. Illusion of Control is a personal success expectancy above the chance of the task once a skill cue sits on a chance event. A confident plan with no last measurement is the meeting version of that miss. The same MBA entry attaches a General Electric story, a sentence it attributes to Jack Welch about management and confidence, and a rise in market value across 17 years. This page did not check the sentence against his book or the value against a filing. Market value is not a measure of the stance. Those figures are not printed here.

Common Misconceptions

The name travels with three additions that the sources read for this page do not support.
The encyclopedia names D·杜根 and an office. The Hall of Fame list of NFL presidents and commissioners does not include a Dugan, and no dated speech was found. Use the sentence as a circulating maxim. Do not cite a chairman, a year, or a locker room.
“Sooner or later” in the compilation is already stronger than the evidence. Bandura wrote that expectation is not the sole determinant, and that missing skill blocks the result. Some popular retellings add a split of 85 percent attitude and 15 percent intelligence, attributed to a Harvard survey. That split is not in the MBA entry read here. No such table is on this page.
Bannister’s afternoon included pacemakers, a rebuilt track, interval repetitions, a coach, and a wind that dropped. His own line includes fear as well as pride. A figure of 300 runners within a year is not in either World Athletics article read here. The 2004 article’s “almost 1,000” is a cumulative remark as of that article, not a count for 1955 and not a count for today.
These pages mark the neighbors. None of them is a second name for Dugan’s Law.

Growth Mindset

Ability can be built. This page is about the next attempt while the result is unknown, not about a general theory of talent.

Self-Fulfilling Prophecy

An expectation changes the later record. Here the expectation has to be paired with an attempt and then revised by it.

Pygmalion Effect

Someone else’s high expectation. Dugan’s Law, on this page, is the person’s own stance toward the next attempt.

Overconfidence Effect

A stated chance checked against later hits. Confidence that is never checked does not belong to this maxim.

Yerkes-Dodson Law

Performance and arousal form a curve. More excitement is not more of the stance on this page.

Stigler's Law of Eponymy

A sticky name is a weak record of who said a sentence first. That is why the office on the encyclopedia line is not used as a source.

One-Line Takeaway

Before a hard task, separate “I can execute the next attempt” from “the prize is already mine,” do the attempt, and let the result revise the belief.