Quick Hits
Daily brief research updates from the cognitive sciences
I just couldn’t resist reviewing this piece of research, from a few years ago, after I stumbled across this (likely because some background algorithm had recommended it to me based on my other Quick Hit yesterday on caffeine). And no, I do not have any financial interests in the coffee industry.
So how on earth and in what way can coffee make teams in business more effective?
The researchers at Ohio State University conducted two experiments in the guise of a coffee tasting experiment complemented with a discussion with undergraduates. The caffeinated coffee was given before or after a discussion task that had been assigned, or supplemented with decaffeinated coffee.
What happened?
In the first experiment they found that those who had had caffeinated coffee rated themselves and others in their discussion group more positively. This points to higher team cohesion and satisfaction with the team and, at least, subjective better “performance”. This seemed to be due to alertness because their self-ratings on alertness were higher than those who didn’t drink coffee in advance.
Of more interest is that an analysis of the group discussion showed that those who had drunk caffeinated coffee talked more, which may be good or bad, but they also stayed on topic more, which is definitely good.
This therefore suggest that caffeinated coffee
- Increases team positivity
- Increases team performance ratings
- Increase communication
- And increases time on task
All too good to be true?
Well, it would need to be followed up. Maybe time of day would make a difference, or the same effect could be achieved with other stimulants. However, as the research has shifted over the years to seeing the benefits of coffee, maybe a good cup of coffee would be more than beneficial for your next team meeting.
Investing in a quality coffee machine also●

Andy Habermacher
Andy is author of leading brains Review, Neuroleadership, and multiple other books. He has been intensively involved in writing and research into neuroleadership and is considered one of Europe’s leading experts. He is also a well-known public speaker speaking on the brain and human behaviour.
Andy is also a masters athlete (middle distance running) and competes regularly at international competitions (and holds a few national records in his age category).
Reference
Vasu Unnava, Amit Surendra Singh, H. Rao Unnava.
Coffee with co-workers: role of caffeine on evaluations of the self and others in group settings.
Journal of Psychopharmacology, 2018; 026988111876066
DOI: 10.1177/0269881118760665
More Quick Hits
Learning at double-speed?
Quick HitsDaily brief research updates from the cognitive sciences ouldn’t it be great if we could learn things double speed? Well, maybe we can. At least according to a study out of the University of California. During the pandemic many...
The “drunken monkey” hypothesis – proven
This had to be a story I covered – monkeys and alcohol sounds too good to pass up. But this is also linked to the “drunken monkey” hypothesis: that humans developed their love for alcohol in earlier primitive times accidentally, and then intentionally, eating fruit...
The Newly Discovered Bias That Makes Us Think We Are More Diverse Than We Are
A few weeks ago I reported on some newly discovered ways we are biased namely that we consider generic terms such as “people” as equivalent to “men” rather than men and women. This was specifically focused on gender bias but this latest piece recently published shows...
Self-awareness of autism leads to better quality of life
Autism has become a well-known diagnosis in recent years. Though some people seem to be against this sort of labelling, and the general increase in different label of mental conditions, a study out of the University of Portsmouth shows why this is actually a good...
Optimal sleep improves your brain, mental, and physical health - and it’s not as much as you think
I’ve reported multiple times on sleep and how it affects just about everything form cognitive performance, to brain plasticity, to physical performance, to mental health, and to metabolism. The question...
No change for a century – children’s backgrounds still predict the same educational outcomes
Educational opportunities have changed dramatically for children over the last century – schools have changed, and college and university admissions have grown. Or so we might think at least. But according to a study out of the University of York, that is not the...