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By that point, there were a solid five decades of industrial research that proved, beyond a doubt, that if you wanted to keep your workers bright, healthy, productive, safe and efficient over a sustained stretch of time, you kept them to no more than 40 hours a week and eight hours a day.

The other thing about knowledge workers is that they’re exquisitely sensitive to even minor sleep loss. Research by the US military has shown that losing just one hour of sleep per night for a week will cause a level of cognitive degradation equivalent to a .10 blood alcohol level. Worse: most people who’ve fallen into this state typically have no idea of just how impaired they are. It’s only when you look at the dramatically lower quality of their output that it shows up. Robinson writes: “If they came to work that drunk, we’d fire them — we’d rightly see them as a manifest risk to our enterprise, our data, our capital equipment, us and themselves. But we don’t think twice about making an equivalent level of sleep deprivation a condition of continued employment.”

Another is that overtime is only effective over very short sprints. This is because (as Sidney Chapman showed in 1909) daily productivity starts falling off in the second week, and declines rapidly with every successive week as burnout sets in. Without adequate rest, recreation, nutrition and time off to just be, people get dull and stupid. They can’t focus.

The Business Roundtable study found that after just eight 60-hour weeks, the fall-off in productivity is so marked that the average team would have actually gotten just as much done and been better off if they’d just stuck to a 40-hour week all along. And at 70- or 80-hour weeks, the fall-off happens even faster: at 80 hours, the break-even point is reached in just three weeks.

Wise managers who understand this will a) avoid requiring overtime crunches, because they’re acutely aware of the serious longer-term productivity hit that inevitably follows; b) keep the crunches as short as possible when they are necessary; and c) give their teams a few days off — one to two comp days per overtime week worked is about right — at the end of a hard sprint. This downtime enables them recuperate more quickly and completely. It’s much more productive to have them gone for the next week — and then back on the job, rested and ready to work — than have them at their workstations but too fried to get anything useful done for the next month.

After WWII, as the GI Bill sent more workers into white-collar jobs, employers at first assumed that the limits that applied to industrial workers probably didn’t apply to knowledge workers. Everybody knew that eight hours a day was pretty much the limit for a guy swinging a hammer or a shovel; but those grey-flannel guys are just sitting at desks. We’re paying them more; shouldn’t we be able to ask more of them? The short answer is: no. In fact, research shows that knowledge workers actually have fewer good hours in a day than manual laborers do — on average, about six hours, as opposed to eight. It sounds strange, but if you’re a knowledge worker, the truth of this may become clear if you think about your own typical work day. Odds are good that you probably turn out five or six good, productive hours of hard mental work; and then spend the other two or three hours on the job in meetings, answering e-mail, making phone calls and so on. You can stay longer if your boss asks; but after six hours, all he’s really got left is a butt in a chair. Your brain has already clocked out and gone home.

Here’s why. By the eighth hour of the day, people’s best work is usually already behind them (typically turned in between hours 2 and 6). In Hour 9, as fatigue sets in, they’re only going to deliver a fraction of their usual capacity. And with every extra hour beyond that, the workers’ productivity level continues to drop, until at around 10 or 12 hours they hit full exhaustion.

For these people, work wasn’t just work; it was their life’s passion, and they devoted every waking hour to it, usually to the exclusion of non-work relationships, exercise, sleep, food and sometimes even personal care. The popular stereotype of the geek was born in some real truths about the specific kinds of people who were drawn to tech in those early years.

Companies broadened their working hours, so programmers who came in at noon and worked through till midnight could make their own schedules. Dress codes were loosened; personal eccentricities were celebrated. HP famously brought in breakfast every morning so its engineers would remember to eat.

There were two problems with this. The first is that this “passion” ideal didn’t recognize that the vast majority of people have legitimate physical, emotional and psychological needs — things like sleep, exercise, relaxation and the maintenance of strong family and social support bonds — that these engineers didn’t have to nearly the same degree. The second was that most managers, lacking windows into their workers’ souls, decided to cut corners and measure passion with one easy-to-chart metric: “willingness to spend your entire life at the office.”

The unions — for 150 years, the guardians of the 40-hour week — were falling under a conservative onslaught; and in their place, the new cult of the entrepreneur was ascendant.

“working 90 hours a week and loving it!” (an actual T-shirt worn with pride by the original Macintosh team. (Productivity experts estimate that we’d have probably had the Mac a year sooner if they’d worked half as many hours per week instead.)

Within 15 years, everything America’s managers used to know about sustaining worker productivity was forgotten. Now, 30 years and a few economic meltdowns on, the cafeterias and child-care centers and gyms are mostly gone, along with the stock options and bonuses that were once held out as the potential reward for the long hours. All that remains of those heady, optimistic days is the mandatory 60-hour work-week. And, unless you’re an hourly worker — still entitled to time and a half by law — the only inducement employers currently offer in exchange for submitting yourself to this abuse is that you get to keep your job.

There are now whole industries and entire branches of medicine devoted to handling workplace stress, but the bottom line is that people who have enough time to eat, sleep, play a little, exercise and maintain their relationships don’t have much need of their help. The original short-work movement in 19th-century Britain demanded “eight for work, eight for sleep and eight for what we will.” It’s still a formula that works.

And it hurts the country, too. For every four Americans working a 50-hour week, every week, there’s one American who should have a full-time job, but doesn’t. Our rampant unemployment problem would vanish overnight if we simply worked the way we’re supposed to by law.

But the bottom line is: For the good of our bodies, our families, our communities, the profitability of American companies, and the future of the country, this insanity has to stop. Working long days and weeks has been incontrovertibly proven to be the stupidest, most expensive way there is to get work done.

Degrees have become deliverables because we are no longer willing to make students work hard against high standards to earn them.

Rethinking higher education means reconstituting institutional culture by rigorously identifying, evaluating and challenging the many damaging accommodations that colleges and universities, individually and collectively, have made (and continue to make) to consumer and competitive pressures over the last several decades. What do we mean by “damaging accommodations?

We mean the allocation of increasing proportions of institutional resources to facilities, personnel, programs and activities that do not directly and significantly contribute to the kind of holistic, developmental and transformative learning that defines higher learning.

We mean the deplorable practice of building attractive new buildings while offering lackluster first- and second-year courses taught primarily by poorly paid and dispirited contingent faculty.

We mean the assumption that retention is just keeping students in school longer, without serious regard for the quality of their learning or their cumulative learning outcomes at graduation.

The primary problem is that the current culture of colleges and universities no longer puts learning first -- and in most institutions, that culture perpetuates a fear of doing so. Isolated examples to the contrary exist, but are only the exceptions that prove the rule.

In calling for the kind of serious, systemic rethinking that directly and unflinchingly accepts the challenge of improving undergraduate higher education, we are asking for four things; taken together, they demand, and would catalyze, a profound, needed, and overdue cultural change in our colleges and universities.

1. The widespread acceptance and application of a new and better touchstone for decision-making in higher education, linked to a strong framework of essential, core principles. A touchstone is a standard, or criterion, that serves as the basis for judging something; in higher education, that touchstone must be the quality and quantity of learning. A touchstone and a clear conceptual framework link our advocacy for change to a powerful set of ideas, commitments, and principles against which to test current policies, practices, and proposals for reform.

2. A comprehensive re-evaluation of undergraduate education and experience guided by those core principles. This must occur both nationally, as an essential public conversation, and within the walls of institutions of all types, missions, and sizes.

3. The leadership and actual implementation and renewal of undergraduate higher education needs to be led by the academy itself, supported by boards of trustees, higher education professional organizations, and regional accrediting bodies alike. Such rethinking ought to be transparent, informed by public conversation, and enacted through decisions based on the new touchstone, improving the quality and quantity of learning.

4. Learning assessment must become inextricably linked to institutional efficacy. The formative assessment of learning should become an integral part of instruction in courses and other learning experiences of all types, and the summative assessment of learning, at the individual student, course, program, and institution levels should be benchmarked against high, clear, public standards.

Cultural problems require cultural solutions, starting with a national conversation about what is wrong, and what is needed, in higher education. The country should reasonably expect higher education to lead this conversation. For real change to occur, discussions about the quality and quantity of learning in higher education and the need for reform must occur at multiple levels, in many places, and over a significant period of time -- most importantly on campuses themselves

If enough change occurs in enough places, and if our public expectations remain high and consistent, learning may become the touchstone for decision-making; the quality and quantity of learning -- documented by rigorous assessment -- may become both each institution’s greatest concern and the basis for comparisons between various colleges and universities

Richard P. Keeling is principal, and Richard H. Hersh is senior consultant, for Keeling & Associates, a higher education consulting practice. They are authors of the recent book, We’re Losing Our Minds: Rethinking American Higher Education (Palgrave Macmillan, 2011), from which this essay is partly excerpted.

He proposes what he calls the “page a year” solution: in first grade, a one-page paper using one source; by fifth grade, five pages and five sources.

The National Survey of Student Engagement found that in 2011, 82 percent of first-year college students and more than half of seniors weren’t asked to do a single paper of 20 pages or more, while the bulk of writing assignments were for papers of one to five pages.

“Writing term papers is a dying art, but those who do write them have a dramatic leg up in terms of critical thinking, argumentation and the sort of expression required not only in college, but in the job market,” says Douglas B. Reeves, a columnist for the American School Board Journal and founder of the Leadership and Learning Center, the school-consulting division of Houghton Mifflin Harcourt. “It doesn’t mean there aren’t interesting blogs. But nobody would conflate interesting writing with premise, evidence, argument and conclusion.”

The debate about academic writing has given rise to new terminology: “old literacy” refers to more traditional forms of discourse and training; “new literacy” stretches from the blog and tweet to multimedia presentation with PowerPoint and audio essay.

Reviewing the test of conceptual understanding, Mazur twice tried to explain one of its questions to the class, but the students remained obstinately confused. “Then I did something I had never done in my teaching career,” he recalls. “I said, ‘Why don’t you discuss it with each other?’” Immediately, the lecture hall was abuzz as 150 students started talking to each other in one-on-one conversations about the puzzling question. “It was complete chaos,” says Mazur. “But within three minutes, they had figured it out. That was very surprising to me—I had just spent 10 minutes trying to explain this. But the class said, ‘OK, We’ve got it, let’s move on.’

This innovative style of learning grew into “peer instruction” or “interactive learning,”

Interactive learning triples students’ gains in knowledge as measured by the kinds of conceptual tests that had once deflated Mazur’s spirits, and by many other assessments as well.

Peer-instructed students who’ve actively argued for and explained their understanding of scientific concepts hold onto their knowledge longer.

Interactive pedagogy, for example, turns passive, note-taking students into active, de facto teachers who explain their ideas to each other and contend for their points of view.

“Now, think of how you became good at it,” he says next. Audience members, supplied with wireless clickers, can choose from several alternatives: trial and error, apprenticeship, lectures, family and friends, practicing. Data from thousands of subjects make “two things stand out,” Mazur says. “The first is that there is a huge spike at practicing—around 60 percent of the people select ‘practicing.’” The other thing is that for many audiences, which often number in the hundreds, “there is absolutely zero percent for lectures. Nobody cites lectures.”

The active-learning approach challenges lecturers to re-evaluate what they can accomplish during class that offers the greatest value for students. Mazur cites a quip to the effect that lectures are a way of transferring the instructor’s lecture notes to students’ notebooks without passing through the brains of either.

So I began to ask my students to read my lecture notes before class, and then tell me what questions they have [ordinarily, using the course’s website], and when we meet, we discuss those questions.”

Students find a neighbor with a different answer and make a case for their own response. Each tries to convince the other. During the ensuing chaos, Mazur circulates through the room, eavesdropping on the conversations. He listens especially to incorrect reasoning, so “I can re-sensitize myself to the difficulties beginning learners face.” After two or three minutes, the students vote again, and typically the percentage of correct answers dramatically improves. Then the cycle repeats.

‘We’ve never done a problem of this kind.’ I tell them, ‘If you had done a problem of this kind, then by definition, this would not be a problem.’ We have to train people to tackle situations they have not encountered before.

“It’s not easy. You get a lot of student resistance,” he continues. “You should see some of the vitriolic e-mails I get. The generic complaint is that they have to do all the learning themselves. Rather than lecturing, I’m making them prepare themselves for class—and in class, rather than telling them things, I’m asking them questions. They’d much rather sit there and listen and take notes.

In addition to student resistance, there is architectural resistance. “Most classrooms—more like 99.9 percent—on campus are auditoriums,”