Seeking Ph.D. students in psychological sciences at the University of Padova

Seeking Ph.D. students in psychological sciences at the University of Padova. The psychology program features strong psychometric and experimental methods training with non-human animal facilities; a program that is over 100 years old. University of Padova is nearly 800 years old, is the home of modern medicine, was once the home of noted professors like Galileo and Copernicus, and is 30 minutes to Venice and 1 hour to Bologna (by train). In particular, Peter Jonason (www.peterjonason.com) is looking for MA and Ph.D. students interested in evolutionary, behavioral economics, and behavioral ecology approaches to personality, sex differences, morality, and mating research. Feel free to contact him to discuss (pkjonason@gmail.com).

 

Applications are due June 16th at 1.00 pm CEST. For more information, see here.

2020 HBES Award Information

Dear HBES members,

There have been many questions about how our annual society and conference awards will be handled given the cancelation of the annual HBES conference that was scheduled to be held in June. The Executive Council has made the following decisions with regard to the society and conference awards.

2020 HBES Early Career Award and Lifetime Achievement Award

Nominations for the 2020 HBES Early Career Award and Lifetime Achievement Award will still be considered this year, and will be formally celebrated at HBES 2021 in Palm Springs (along with the HBES awards for 2021). We have, however, extended the deadline for the nominations to July 1, 2020 given the pandemic situation. Please see our website (see the ‘Nomination’ tab under each award) for eligibility, application guidelines, and submission link.

2020 New Investigator Award and Postdoctoral Award

The New Investigator Award and Postdoctoral Award will not be conferred this year because they require a talk at the annual HBES conference, which has been cancelled. Because for some award candidates 2020 was the last eligible year for one of the awards, we will be extending the eligibility by one year for the 2021 HBES conference awards. Specific eligibility requirements will be available at a later date when the HBES 2021 conference website is live later this year.

Thank you for your understanding during this difficult situation.

Sincerely,
The HBES Executive Council

Why Do We Stereotype Others by Sex and Age?

by Oliver Sng, Keelah Williams, & Steven Neuberg

 

The study of sex and age stereotypes—the general beliefs we hold about others based on their sex and age—has had a long history. In a recent paper, we present a new perspective to thinking about this topic. Specifically, we propose that social perceivers are actually “lay adaptationists”. In other words, although lay perceivers are not aware of formal evolutionary theories (e.g., parental investment, life history), they nonetheless pick up on and generate predictions about how others’ sex and age influence their goals and behaviors.

From this perspective, perceivers categorize and stereotype others by sex and age, because another person’s sex and age are associated with their goals (e.g., learning, mating, parenting), which in turn are associated with distinct opportunities and threats they might pose (e.g., potential mates, potential mate competition). This generates several insights.

First, it is not sufficient for perceivers to be categorizing others in terms of just sex, or just age. This is because goals vary by the interactive combinations of sex and age (e.g., men are more oriented towards short-term mating goals than women are, but especially so at younger ages). To usefully represent distinct social opportunities and threats, perceivers should categorize others in terms of the combination of others’ sex and age.

Indeed, they do so. Using a memory recall paradigm often referred to as “who-said-what”, we find that perceivers are more likely to confuse individuals of the same sex or of the same age group (e.g., confusing women with other women instead of men, confusing 60 year-olds with other 60 year-olds instead of 20 year-olds). More important, they are especially likely to confuse individuals of the same sex and age (e.g., confusing 20-year-old women with other 20-year-old women instead of 60-year-old women or 20- and 60-year-old men). Hence, perceivers mentally group others not by sex or age independently, but by the interaction of both.

The same principle should apply to stereotypes—beliefs about how women and men of different ages are like. Indeed, in another set of studies, we find that too. For example, perceivers believe that men are more oriented towards seeking short-term partners than women are, but this sex stereotype is stronger for stereotypes of younger (e.g., 28-year-olds) than older individuals (60-year-olds). The reverse is observed for stereotypes of long-term mating orientation. Young women (e.g., 28-year-olds) are stereotyped to be more oriented towards seeking and maintaining long-term relationships than young men, but this stereotype disappears for stereotypes of older individuals (e.g., 60-year-olds). Hence, perceivers also hold interactive sex and age stereotypes.

Finally, the current perspective also has implications for thinking about certain widely studied sex stereotypes. A considerable literature has accumulated on sex stereotypes of agency and communion. Agency comprises traits that focus on self-assertion, such as being independent and competitive. Communion comprises traits that maintain harmonious social relationships, such as being caring and understanding.

Why are men typically stereotyped as more agentic than women? One explanation may be because men are stereotyped as more oriented than women towards short-term mating goals (as just mentioned above), and the pursuit of short-term mating goals likely requires more agentic behavior, such as competitiveness and dominance. If the sex stereotype of agency is indeed derived from sex stereotypes of short-term mating goals, then presenting perceivers with direct information that both men and women are similarly oriented towards seeking short-term mates should eliminate the sex stereotype of agency.

“Providing perceivers with direct information about the adaptive goals (e.g., mating, parenting) that male and female targets are engaging in seems to override prominent sex stereotypes of agency and communion.”

Indeed, that is the case. Perceivers presented with a male or female target, without any additional information, stereotype the man as more agentic than the woman. However, when perceivers are given information that a woman and a man are similarly spending time looking for short-term partners, the woman and man are stereotyped as equally and highly agentic.

A similar logic could be applied to thinking about sex stereotypes of communion. Why are women stereotyped to be more communal than men? One explanation is that the sex stereotype of communion may be derived from sex stereotypes of long-term mating goals (of women as being more oriented towards such goals than men), because seeking and maintaining long-term mating relationships requires communal traits such as kindness and care. If this is so, then perceivers presented with men and women who are similarly engaging in long-term mating goals should be viewed as similarly communal.

This prediction is borne out, too. In the absence of additional information, perceivers stereotype a female target as more communal than a male target, consistent with the stereotype. However, when told that both targets have and spend time with a long-term relationship partner, the male and female targets are viewed as equally communal

In general, providing perceivers with direct information about the adaptive goals (e.g., mating, parenting) that male and female targets are engaging in seems to override prominent sex stereotypes of agency and communion. Prominent sex stereotypes appear to emerge from people’s stereotypes about sex and age differences in the relative prominence of adaptive goals.

To summarize, perceivers categorize and stereotype by the interactional combination of others’ sex and age, and these stereotypes suggest that perceivers are lay adaptationists in certain ways. For instance, just as parental investment theory predicts that males in our species are more likely to invest in mating effort than women are, lay perceivers also “predict”, through sex and age stereotypes, that men (and particularly young men) are more oriented than women towards short-term mating goals and behaviors. These adaptive goal stereotypes may in turn underpin other stereotypes, such as sex stereotypes of agency and communion.

The findings outlined above may seem intuitive, and intuitive findings are sometimes devalued. But that the findings seem intuitive to you as a reader is itself something the perspective would predict, simply because you are also a lay adaptationist (and likely also a professional adaptationist!). In other words, you are likely also using the sex and age of others, interactively, to predict their goals and behavior. Hearing that people categorize and stereotype by sex and age in these particular ways should therefore be unsurprising.

The idea that perceivers may be lay adaptationists is useful beyond enhancing our understanding of the social perception of sex and age. In other work, we apply a similar approach for better understanding race stereotyping. Specifically, certain stereotypes of Black and White Americans may not be about race, per se, but instead may reflect what we call ecology stereotypes—beliefs about the traits of individuals who live in more versus less harsh and unpredictable ecologies. Supporting this, we have found that providing perceivers with direct information about a Black or White individual’s home ecology can override race stereotypes of traits such as impulsivity and aggressiveness.

Thinking about perceivers as lay adaptationists lends a new way of thinking about social perception and stereotyping. Stereotyping, in particular, is traditionally presented as an outcome of “lazy” minds trying to simplify the world. The current work presents a more nuanced picture. Social perceivers are sensitive to the interactions of sex and age in thinking about and predicting the traits of others. When making social inferences about agency and communion, perceivers also prioritize information about an individual’s relevant goals, over the general category an individual belongs to. Indeed, our stereotypes may be more strategic than typically thought.

 

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Read the paper: Sex-age stereotyping: Social perceivers as lay adaptationists

Comparing Evolutionary Models of Sexual Initiation

by Kristin Snopkowski & John Ziker

 

Life history theory examines how organisms allocate energy throughout the lifespan.  While it was originally developed in biology, more recently a large number of researchers have begun to use life history theory as a way to examine phenotypically plastic responses to early life factors in humans.  This research has examined how family dynamics and stressors earlier in life influence ‘life history events,’ such as pubertal timing, age at first reproduction, age at sexual initiation, and more rarely, investment in offspring.

In this research, we tested a variety of different evolutionary hypotheses that have been proposed – frequently under the theoretical umbrella of life history theory – to see which were best at predicting sexual initiation among a sample of Canadian adolescents who were followed longitudinally since birth (over eight waves of data collection).  The National Longitudinal Survey of Children and Youth, a survey conducted by Statistics Canada, provides a wealth of information about children and their families.  This allowed us to examine a variety of different factors that have been predicted to influence the timing of life history events (although, our analysis only examined sexual initiation).  This includes factors such as: childhood psychosocial stressors, such as parenting behaviors, socioeconomic status, stressful events; paternal investment indicators, including contact with father, parental divorce, emotional closeness with father; mortality cues, for example, health of caregivers, adolescent chronic illness; unpredictability, such as changes in childcare and household moves; social support, for instance, adolescent social support other than peers; prenatal factors, including birth health and gestational diabetes; and intergenerational conflict indicators, measured as having half siblings.

We utilized a model selection procedure where we minimized AIC scores to predict whether adolescents had engaged in consensual sexual intercourse by the ­eighth wave of data collection (age 14/15). After identifying the predictors that minimized the AIC score for each variable set, we ran all combinations of models (since we had eight sets of variables, this led to 256 different combinations).  We then examined all models within three of the best AIC score (indicative of having a similar level of statistical support) and calculated the importance score for each variable set.

“The lack of an association between paternal investment variables (frequently discussed as ‘father absence’) was surprising given the frequency with which it has been found in other contexts”

The results showed that psychosocial stressors (either early-life or adolescent), mortality cues, and intergenerational conflict variables were included in all of the top models. Prenatal factors were included in the top five models. Social support and unpredictability were common across top models (but not included in all models).  There was greater support for early-life psychosocial stressors over stressors during adolescence.  Paternal investment variables were not included in any of the top models.  Importance scores mirrored the AIC results: extrinsic mortality cues had the most importance, followed by intergenerational conflict, early childhood psychosocial stressors and prenatal factors. Social support and unpredictability predictors followed, with importance scores between 0.58 and 0.54.  Finally, paternal investment has the lowest importance (0.11).

As previous research has found, there was good support for early-life psychosocial stressors and extrinsic mortality cues being associated with sexual initiation by age 14/15. As predicted social support, unpredictability, and prenatal factors were also associated with sexual initiation.  Novel results of this study include the role of half-siblings and its association with sexual initiation, as predicted by intergenerational conflict models (a few recent papers have also found evidence of this).  The lack of an association between paternal investment variables (frequently discussed as ‘father absence’) was surprising given the frequency with which it has been found in other contexts (mostly western contexts, like the one we examined in this study).  It is possible that intergenerational conflict factors confound the effect of parental divorce, so it is important to include both factors in future models to detangle their effects.

 

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Read the paper: “Sexual initiation among Canadian youth: A model comparison approach of evolutionary hypotheses shows greatest support for extrinsic mortality cues, intergenerational conflict, and early life psychosocial stressors

 

Getting Refunds for Flights and Lodging for Cancelled HBES 2020

Syndicated columnist, author, and longtime HBES member Amy Alkon here.

Around March 26, I saw tweets from grad students that American Airlines and AirBnb were refusing refunds for flights and lodging for June HBES, cancelled due to coronavirus. Other airlines may also be refusing to refund.

Delta, thankfully, is refunding money.

A number of us tried to use social media to get American Airlines and Airbnb to give refunds, but they didn’t budge.

There may be another way. I’ve just reached out to a newspaper colleague, syndicated travel columnist and author Christopher Elliott, whom I’ve known for 20 years and respect. On his nonprofit travel consumer advocacy website — Elliott.org — he takes on cases like this, and gets resolution, mediating between travelers and airlines. He has the power of the respect and readership he’s earned and big businesses often back down and reverse no refund policies.

Elliott tweeted back to me that he is open to considering taking this on as a case. Knowing him, I suspect he will take this on.

I have not personally lost money, but I suggest that some of you who have had refunds denied band together and collectively write to Chris via his help link at his website: elliot.org/help (This is the way he asks that requests for help be submitted.) I think that collectively writing him (at least two or three people banding together) makes this a more persuasive request (see end for contact information).

An important crux of your appeal, in my opinion: What many people don’t realize is that grad students and ECRs are often living on financial fumes, and the hundreds of dollars or more that are being kept by these companies are huge sums of money — especially at a time when gig work many were doing to make ends meet has dried up.

-Amy Alkon

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If you are a student who is struggling to get refunded for flights and lodging related to HBES 2020, please contact HBES Student Representative Cari Pick (studentrep@hbes.com). Cari will be organizing a collective effort for those interested.

 

Note: This effort is NOT for conference registration refunds, which are handled by the conference organizers. If you have questions about your registration refund, please contact the conference organizers at hbes2020@gmail.com

A Letter from the Editor of Evolution and Human Behavior

Dear HBES members,

I hope this letter finds you all in good health and relatively sane. I am pleased to give the membership an update on EHB. As many of you already know, Elsevier recently migrated the online submission system to Editorial Manager. Together with the production staff and the Editorial Board, I have been working to identify issues and improve usability. I expect it will take a few more cycles to work out all the kinks so I ask for your continued patience.

The Editorial Board continues to work through this challenging time to compile several upcoming issues and I’d like to share them with you. Slated for 2020 are two special issues. The first special issue, organized by Coren Apicella, Ara Norenzayan, and Joe Henrich is on non-WEIRD research and due out in September. The second special issue, organized by Willem Frankenhuis and Dan Nettle, is on Life History Theory and due out in November. This will close out volume 41. For each of the special issues, please be on alert for calls for commentaries. A few selected commentaries will be compiled and appear in a subsequent issue early in 2021. More information will be provided in the introductory article/editorial that will accompany each special issue. There are 2 more special issues in the works and I will provide an update as these take shape.

In issue 6 of 2019, EHB piloted a new format—featured article, commentaries, and author response. The test article for this format was on current debates surrounding menstrual cycle effects and, from the feedback I’ve received, several HBESers felt it was a valuable contribution to the literature. I strongly believe it is important to advance the field’s knowledge across all content domains and one way to do this is to organize effective discussions. There are several topics across anthropology, biology, economics, philosophy, and psychology in need of clarification and (friendly) debate. My intention is that this new format will provoke discussion, generate collaborations, and solidify our scientific foundations. There are 6 issues of EHB per year and I would like to move toward including a featured article with commentaries and response in each. Currently, selection of target articles and commentaries is initiated by the Editor, but I welcome inquiries. Note: Not all articles will lend themselves to this format.

Typically, at the annual HBES meeting, we announce the winner of the Margo Wilson Award, an award made by the Editorial Board for the best paper published in EHB in the preceding year. Selection for the 2020 Margo Wilson Award for the best paper published in EHB in 2019 will be announced in the summer newsletter.

Finally, there are several changes to the Editorial line-up I’d like to share. First, a warm welcome to four new Associate Editors: David Puts, Greg Bryant, Tess Robertson, and Andy Delton. They join Coren Apicella, Rebecca Sear, Josh Tybur, and Willem Frankenhuis to round out the 2020 Editorial Board. Second, Dan Hruschka, after 7 years of service, will be stepping down as Associate Editor. Dan’s contributions to the field have been immeasurable and I am grateful to have had the chance to work closely with him on the journal. Thank you, Dan, for everything you’ve done.

I look forward to receiving your excellent scholarly works via the online submission portal. As always, my mission as EiC of HBES’s journal is to raise the level of discourse, advance knowledge within and across borders, and disseminate to the academy, media, and public our multi-disciplinary research on evolution and human behavior.

 

Stay well,

Deb Lieberman

Editor in Chief, Evolution & Human Behavior