“Indeed, for every hour later in the day the test were administered, scores fell a little more. The effects of later-in-the-day testing were similar to having parents with slightly lower incomes or less education – or missing two weeks of school a year.”
The quote above is from Dan Pink’s book When in a section where he wrote about researchers who studied test scores for children in relation to the time of day that tests were administered. School children performed better on tests when they took place early in the day, and worse on tests when they came later. The difference was not enormous to the point where students were passing with flying colors in the morning and failing in the afternoon, but it was meaningful.
I find this incredibly interesting for a couple of reasons. The first is that I think 8 hour work-days are horrible, and the second is that I think we ascribe our success or failure in life to our own efforts far more than what we should.
Starting with the first point, if I were suddenly named king in the United States, my first act would be reduce the standard workday to 6 hours instead of 8. Most American’s no longer work at a factory where they need to be active on a line pushing a button or hammering a nail in order for widgets to be produced. When that was the case, 8 hour workdays may have been necessary, but in a knowledge economy where our main output comes from our mind and not our hands, 8 hour workdays likely harm our work more than they allow us to produce meaningful outputs. My big fear is that increased time outside of work will lead to more urban sprawl and longer commutes for people rather than to more valuable time spent in communities or with family.
Ultimately, however, I think giving us more time for sleep, for exercise, and for family will help us be better people. I believe that many people claim to be more busy than they actually are at work, and often spend a lot of time focusing on low value tasks that keep them busy but don’t provide much benefit for anyone. Shortening the work day would force people to be better schedulers and to use their time more wisely, and would hopefully create a happier workforce and nation.
Second, it is important to recognize that simply the time at which students took a test impacted the score they got. The test in some ways is measuring their knowledge, but it clearly is also measuring endogenous factors unrelated to their learning. We are grading and scoring our students in ways that can be influenced by meaningless factors beyond the students’ control.
I think this example is revealing of a basic fact of our lives. We feel like we are in control and as if the outcomes that people experience are directly related to their own effort and skill. However simply the time of day can have a big impact on our achievements, regardless of our skill or effort. Beyond test scores, perhaps you had a job interview in the afternoon, and both you and the interviewer were a little less sharp than you would have both been at 10 a.m. for an interview. You might not come across as the best candidate, and the time of day may be the biggest factor that prevented you from getting the job. In many ways small factors like timing can shape our lives in ways that we can’t even imagine. Sometimes luck is just as important as our skill and effort, and we should recognize that when we think about where we are and how we got to the point we are at.