@James
Although I have never attended ISSW, poster session refers to a forum where students or more junior researchers and investigators present their initial findings on poster board(s) in academic and scientific meetings. Meeting participants have an opportunity to walk around to visit these posters, let say in a hotel or convention center meeting room, and ask the poster presentators questions related to methodologies, findings, or limitations. Then poster presentations can be followed up with collecting more data from additional study subjects/samples/observations before final results are submitted to scientific journals for peer review before publication. Speakers and panelist members, on the other hand, tend to be more established investigator and experts.
I'm unclear how a virtual poster session will work with ISSW. Perhaps the authors will be available during designated hours to online chat with virtual participants.
Two books immediately comes to mind on behavioral economics:
Predictably Irrational by Dan Ariely
And the often quoted classic in avalanche safety classes by Nobel laureate
Daniel Kahneman Thinking, Fast and Slow