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X-WR-CALDESC:Events for Center for Behavior, Evolution, and Culture
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180402T000000
DTEND;TZID=America/Los_Angeles:20180402T000000
DTSTAMP:20260509T015550
CREATED:20200922T220835Z
LAST-MODIFIED:20201013T005117Z
UID:4382-1522627200-1522627200@bec.ucla.edu
SUMMARY:Simine Vazire - Safer Science: The Credibility Revolution in Psychological Science
DESCRIPTION:Simine Vazire: University of California\, DavisA fundamental part of the scientific enterprise is for each field to engage in critical self-examination to detect errors in our theories and methods\, and improve them.  Psychology has recently been undergoing such a self-examination. Psychological scientists arguably tackle one of the hardest phenomena to understand and predict: human behavior. Naturally\, our data are noisy and our findings are often tentative. However\, we are slowly building knowledge and making our theories more complete. The recent self-analysis has revealed several ways we can further improve our research practices to make our findings more sound. These new norms are gaining steam within psychology and beyond\, making science stronger.
URL:https://bec.ucla.edu/event/simine-vazire-safer-science-the-credibility-revolution-in-psychological-science/
CATEGORIES:2018,Past Presentation,Presentation
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180409T000000
DTEND;TZID=America/Los_Angeles:20180409T000000
DTSTAMP:20260509T015550
CREATED:20200922T220836Z
LAST-MODIFIED:20201013T005117Z
UID:4383-1523232000-1523232000@bec.ucla.edu
SUMMARY:Amy Boddy - Life History Trade-Offs in Reproduction and Cancer
DESCRIPTION:Amy Boddy: University of California\, Santa BarbaraLife history theory is a powerful approach to study human health and disease. However\, there has been little work in applications of life history theory in cancer biology. Here I will discuss how cancer is fundamentally characterized by life history trade-offs\, as cancer defense mechanisms are a major component of somatic maintenance. Using a newly curated comparative oncology dataset across a wide range of mammals\, birds and reptiles\, we show a negative relationship with cancer rates and body mass or lifespan. Additionally\, these organismal life history traits reflect the cellular response to DNA damage assays\, providing insights into potential mechanisms of cancer defense. Understanding these trade-offs in the context of organismal evolution may help explain variability we see in cancer susceptibility across human populations. Additionally\, our dataset demonstrates mammals get higher rates of cancer than other vertebrates. I will discuss the constraints of internal gestation\, the process of placentation and and how these reproductive processes may lead to a trade-off with cancer susceptibility.
URL:https://bec.ucla.edu/event/amy-boddy-life-history-trade-offs-in-reproduction-and-cancer/
CATEGORIES:2018,Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180416T000000
DTEND;TZID=America/Los_Angeles:20180416T000000
DTSTAMP:20260509T015550
CREATED:20200922T220837Z
LAST-MODIFIED:20201013T005117Z
UID:4384-1523836800-1523836800@bec.ucla.edu
SUMMARY:Zoe Liberman - Birds of a Feather Flock Together: Similarity Drives Reasoning about Affiliation and Social Group
DESCRIPTION:Zoe Liberman: University of California\, Santa BarbaraSimilarity influences myriad social relationships. From group membership to friendship\, to marriage\, to mere proximity\, people who are similar to one another tend to be closer than people who are dissimilar. Here\, I present research indicating that infants understand the importance of homophily in determining social structure: they expect people who are similar to one another to affiliate. I also explore questions about they types of similarity infants use to reason about the social world. I hypothesize that (1) similarities that have marked human social groups across evolutionary history may be attended to earliest \, and (2) that different types of similarities will be most relevant for reasoning about different types of relationships (e.g.\, group members vs. friends vs. family members).
URL:https://bec.ucla.edu/event/zoe-liberman-birds-of-a-feather-flock-together-similarity-drives-reasoning-about-affiliation-and-social-group/
CATEGORIES:2018,Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180423T000000
DTEND;TZID=America/Los_Angeles:20180423T000000
DTSTAMP:20260509T015550
CREATED:20200922T220850Z
LAST-MODIFIED:20201013T005116Z
UID:4385-1524441600-1524441600@bec.ucla.edu
SUMMARY:Matthew Lieberman - The Brain is Social by Default
DESCRIPTION:Matthew Lieberman: University of California\, Los AngelesOur social cognitive abilities can either be thought of like a piece of software that is written on top of existing general purpose hardware or as dedicated machinery of its own.  I will present six lines of research from my lab that examine the ways in which our brain is fundamentally social rather than it being one more application of more general domain-free cognitive mechanisms.  In addition\, some of these lines of research will present data demonstrating that even when the brain is at rest it is actively preparing and learning from the social world.
URL:https://bec.ucla.edu/event/matthew-lieberman-the-brain-is-social-by-default/
CATEGORIES:2018,Past Presentation,Presentation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20180430T000000
DTEND;TZID=America/Los_Angeles:20180430T000000
DTSTAMP:20260509T015550
CREATED:20200922T220851Z
LAST-MODIFIED:20201013T005116Z
UID:4386-1525046400-1525046400@bec.ucla.edu
SUMMARY:Julie Miller - Collective Behavior in a Slave-Making Ant: Coordination and Decision-Making During Raids
DESCRIPTION:Julie Miller: University of California\, Los AngelesThe slave-making ants are social parasites that steal their workers in coordinated raids on other colonies. Their parasitic lifestyle has made these ants a model of host-parasite co-evolution\, however their charismatic brood-raiding behavior is virtually unstudied. Here I explore how colonies make collective decisions when selecting a raiding site and how colonies coordinate their attack. Slave-making has independently evolved multiple times in ants\, but I focused this study on one species of North American slave-maker\, Temnothorax americanus. I staged raids in table-top arenas in the lab to standardize conditions and made detailed observations of individual and colony-level behaviors. I found that the success of group raids depends on the ability of slave-makers to coordinate the timing of two roles: herding and guarding the entrance. Having established that raiding is a coordination problem\, I then investigated how the colony selects a raiding site in the first place.  I first measured colony preferences using choice experiments\, but colonies demonstrated no preference for any size-related host features. This apparent lack of preference led to a separate question: why do colonies disregard fitness-relevant host variation? Theoretical work has offered suggestions about which conditions ought to favor low-choosiness\, so I empirically tested whether they are met by T. americanus colonies\, specifically testing the hypotheses that slave-makers experience (1) low host encounter rates\, (2) high time constrains\, or (3) low variability in host quality. To test these hypotheses\, observations of lab raids were combined with spatial field data on host distribution and brood phenology. These data support that raiding is constrained by both the brief window of host brood availability\, particularly of the highly valuable pupae\, combined with low encounter rates of host colonies in the field. Variation in host nest quality was relatively high\, and thus unlikely to favor low acceptance thresholds of slave-maker colonies. The implications of these results are that slave-maker colony raiding decisions are selected to maximize the number of raids per season\, and not to selectively exploit the few most profitable ones.
URL:https://bec.ucla.edu/event/julie-miller-collective-behavior-in-a-slave-making-ant-coordination-and-decision-making-during-raids/
CATEGORIES:2018,Past Presentation,Presentation
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