I recently went over why seminar speakers might give a talk. Now, the flipside:
What is to be gained by inviting and hosting a seminar speaker?
There are institutional advantages to running a seminar series: to promote an intellectual atmosphere in a department, build a diversity of viewpoints, train students and keep everybody current. However, when an individual person or laboratory decides to host a particular guest speaker, there are other primary motives at work.
Here is a non-exclusive list of goals of hosts, that could explain why certain speakers are picked for a seminar series.
Schmoozing for a postdoc. I think this is the main reason that speakers are invited. Grad students want to be able to land a postdoc, and PIs want their students to land postdocs. Bringing in potential postdoc mentors to build relationships with graduate students is an old tradition.
Hang out with your intellectual hero. There’s something special about academically famous people in your field. The chance to visit just have a coffee with, say, Bert Hölldobler or Dan Janzen would be mighty darn cool. When I was in grad school, one person I invited was Ivette Perfecto. My main motivation was because because her science is just so darn awesome, and the chance to hang out with her was tremendous.
Quality time with a friend. Wouldn’t it good to see an old pal you haven’t seen for a while, and catch up on what work they’ve been doing?
Being an alpha. Hosts could invite junior speakers in their same field which are sure to be flattering of their more esteemed hosts whom they are visiting.
Be a beta. Hosts could invite senior researchers in their field, upon whose feet they may grovel. How is this different from hanging out with your hero? Betas are looking for status and opportunity, while it’s also possible to invite someone for less careerist motives.
Develop the career of another scientist. It could be that you just want to give an a good experience to a junior scientist who does good work, who could stand to benefit from giving an invited seminar.
Work with a collaborator. Some work is a lot easier, or more effective, when you’re in the same room, rather than using various methods of remote communication. Why not bring your collaborator out on the department’s dime?
Build a culture of inclusiveness. It’s no accident that most visiting speakers that I invite to my university’s lecture series are early career women, often with an international background or from underrepresented groups. This helps promote the careers of these scientists who are at a structural disadvantage because of biases in the system. An even stronger motivation, from my standpoint, is that these speakers are inspirational role models for our students, most of whom are minority women. I can talk about a commitment to diversity until my white face turns blue, but the fact of who I am speaks more than my words. Regular exposure to the experiences of senior doctoral students, postdocs, and junior faculty who have backgrounds not so different from my own students are critical. This isn’t the only factor involved in extending an invitation, but it’s a big one for myself and others at my institution.
Trade favors. Bringing a speaker out might be to make someone owe you a favor or a way to repay a favor. This could be to help out someone’s postdoc, or help out someone with a shaky tenure case who could use a bit of external validation. This might sound like a silly motive, but not without precedent. Once, when I was organizing a symposium, someone asked me for a speaking slot, and if I did this favor, this person said that I would be invited for the seminar series.
Show grad students a variety of career options. The flawed default mode in many universities is that moving onto an R1 faculty position is the natural and expected progression after grad school. However, the majority of Ph.D. recipients don’t go this route. Inviting people who work in industry, NGOs, and governmental agencies can help broaden perspectives. Also, of course, you could invite a researchers based out of a teaching institution. This will definitely widen the job horizons of grad students.
Entertainment value. Some people are invited because they’re known for giving a really great talk, will fill the house, and will bring not only reflected praise on the hosts but also a good time.
Learning science. Some people actually invite seminar speakers because they want to learn about the science that’s being done by the guest.
And that’s it for the list. Feel free to add the ones that I’m forgetting in the comments. Or to tell a funny story, for that matter. We could use more funny stories in the comments, right?