Does sacrificing sleep for work affect your likability?
We all have those friends who sacrifice sleep to get more work done. Maybe you’re one of them. To some, getting less shut-eye to get more done is a noble sacrifice. To others, it sets an undesirable standard, particularly amongst peers and colleagues. But it’s an open question how others view the sleep sacrificer.
In a previous experiment, we found that a hypothetical co-worker who stays to work later than other employees was liked less by peers. Does that hold true for a friend who isn’t even competing with you at the same company?
We conducted an experiment with 400 people on Amazon Mechanical Turk in which participants were told about a friend who either gets enough sleep or sacrifices sleep for work.
Participants were instructed as follows:
Imagine you’re talking with a friend about daylight savings time, which leads to talking about sleep in general. Your friend mentions that they [usually get about 7 hours of sleep per night / work so much that they usually only get about 4 hours of sleep per night].
At this moment, how much do you like this person? (1 = Not at all, 7 = Extremely)
The phrase in brackets was randomly assigned to participants, so they only saw one of these two phrases. The likability question was asked on a 1-7 scale.
We found a significant difference in likability between our 7-hour sleeper (avg. = 5.19) and 4-hour sleeper (avg. = 4.70), such that our work-more-sleep-less friend was liked quite a bit less (p < 0.001). This difference was about half of a point on our 1-7 scale, or approximately a 10% reduction.
We also ran two exploratory tests to see if political beliefs or age influenced the results. We found no such effect for political beliefs (p = 0.561). We did, however, find a marginally significant effect of age (coeff. p = 0.052, F-test p < 0.001). Each additional year of age was associated with a -0.019 lower like rating toward our 4-hour sleeper. For example, a 20-year-old would like our 4-hour sleeper only 0.14 points less, but a 60-year-old would like our 4-hour sleeper 0.90 points less.
As you can see from the graph below, this age effect was particularly pronounced for Millennials and Gen X—the two generations in the workforce.
In conclusion, if you tend to sacrifice sleep for work, you may not want to complain or brag about it to your friends or colleagues. You may even want to consider getting more sleep, if you can.
We used an independent samples t-test to test for significant differences in perceptions between our two experimental conditions. For significant differences, the difference between the two groups' averages would be large and its corresponding “p-value” would be small. If the p-value is less than 0.05, we consider the difference statistically significant, meaning we'd likely find a similar effect if we ran the study again with this population. To test for significant interactions between the main results and participant demographics, we used OLS regression analyses with interaction terms.