Sarah E Hill

• PhD
• Professor (Full) at Texas Christian University

Environmental stress promotes accelerated mating goals among adults with low childhood socioeconomic status (CSES). However, little is known about proximal psychological changes that would need to co-occur with shifting mating goals to ensure their success. Across five studies, we tested the possibility that one such change may occur in individuals...

Background Nearly 40% of unplanned pregnancies in the USA are the result of inconsistent or incorrect contraceptive use. Finding ways to increase women’s comfort and satisfaction with contraceptive use is therefore critical to public health. One promising pathway for improving patient outcomes is through the use of digital decision aids that assist...

In the current research, we used data from a sample of 16,327 menstrual cycle tracking app users to examine the association between menstrual cycle characteristics and sexual motivation tracked over 10 months of app use. Guided by past work that finds links between menstrual cycle characteristics related to conception risk and sexual motivation, we...

Background Reproductive health literacy and menstrual health awareness play a crucial role in ensuring the health and well-being of women and people who menstruate. Further, awareness of one’s own menstrual cycle patterns and associated symptoms can help individuals identify and manage conditions of the menstrual cycle such as premenstrual syndrome...

BACKGROUND Reproductive health literacy and menstrual health awareness play a crucial role in ensuring the health and wellbeing of women and people who menstruate. Further, awareness of one’s own patterns and symptoms can help individuals identify and manage conditions of the menstrual cycle such as premenstrual syndrome (PMS) and premenstrual dysp...

Women using hormonal contraceptives (HCs) exhibit numerous signs of chronic inflammation, including elevated C-reactive protein levels and greater risk of developing mood and autoimmune disorders. However, users and non-users of HCs often have similar circulating proinflammatory cytokine levels, making the mechanism of association unclear. One poss...

Background Digital decision aids are becoming increasingly common in many areas of healthcare. These aids are designed to involve patients in medical decision making, with the aim of improving patient outcomes while decreasing healthcare burden. Previously developed contraceptive-based decision aids have been found to be effective at increasing wom...

Many species exhibit seasonal patterns of breeding. Although humans can shield themselves from many season-related stressors, they appear to exhibit seasonal patterns of investment in reproductive function nonetheless, with levels of sex steroid hormones being highest during the spring and summer months. The current research builds on this work, ex...

The Oxford Handbook of Human Mating covers the contributions and up-to-date theories and empirical evidence from scientists regarding human mating strategies. The scientific studies of human mating have only recently risen, revealing fresh discoveries about mate attraction, mate choice, marital satisfaction, and other topics. Darwin’s sexual select...

Women’s psychological and behavioral responses to hormonal contraceptive (HC) treatment can be highly variable. One of the great challenges to researchers seeking to improve the experiences of women who use HCs is to identify the sources of this variability to minimize unpleasant psychobehavioral side-effects. In the following, we provide recommend...

Background Digital decision aids are becoming increasingly common in many areas of healthcare. These aids are designed to involve patients in medical decision making, with the aim of improving patient outcomes while decreasing healthcare burden. Previously developed contraceptive-based decision aids have been found to be effective at increasing wom...

Women’s psychological and behavioral responses to hormonal contraceptive (HC)treatment can be highly variable. One of the great challenges to researchers seeking to improve the experiences of women who use HCs is to identify the sources of this variability to minimize unpleasant psychobehavioral side-effects. In the following, we provide recommenda...

Study question Is there a relationship between day length and ovulation rate in women of reproductive age? Summary answer Analysis showed that increasing day length is associated with higher ovulation rate in women of reproductive age in both Sweden and the United States (US). What is known already Historically, winter months have been characteri...

It has long been hypothesized that attractiveness provides a cue to a target's health and immunocompetence. However, much of the research testing this hypothesis has relied on a small number of indirect proxies of immune function, and the results of this research have been mixed. Here, we build on this past research, examining the relationship betw...

Much research indicates that exposure to early life adversity (ELA) predicts chronic inflammatory activity, increasing one’s risk of developing diseases of aging later in life. Despite its costs, researchers have proposed that chronic inflammation may be favored in this context because it would help promote immunological vigilance in environments w...

Disgust is reasoned to operate in conjunction with the immune system to help protect the body from illness. However, less is known about the factors that impact the degree to which individuals invest in pathogen avoidance (disgust) versus pathogen management (prophylactic immunological activity). Here, we examine the role that one’s control over pa...

Across four studies, the current research tested the prediction that women would perceive greater competitive tendencies in same- (vs. cross-) sex others when resources were scarce. Contrary to predictions, results found evidence that women perceived more competitive tendencies in same- (vs. cross-) sex targets when resources were abundant. Study 1...

In Western dual-educated, male-female marriages, women who divorce face greater burdens because of decreased income and primary or sole responsibility for caring for children than men who divorce. Why, then, do these women initiate divorce more and fare better psychologically after a divorce than men? Here, we articulate an evolutionary mismatch pe...

The current research examined the factors that impact women's preference for male (vs. female) friends and how these preferences, in turn, impact how women are evaluated by others. Studies 1–2 demonstrated that women who prefer male (vs. female) friends reported greater mating and sexual success, placed less trust in female friends, and held more h...

Decades of research finds associations between personality traits and health. In recent years, it has become clear that the activities of the immune system play a key role in linking these variables. In the current work, we add to this research by exploring the relationship between Big Five personality traits and (Study 1) polymorphisms known to im...

Here, we examine the impact of one's willingness to try new foods on others' perceptions of sexual unrestrictedness and desirability as a sexual and romantic partner. Guided by insights from past research, we hypothesized that targets who are willing to try new foods would be perceived as being more desirable sexual and romantic partners (Study 1)...

Early life stress increases one’s risk for health problems later in life, and many studies find that these effects are sex-differentiated. Here, we examined relationships between multiple sources of early life stress and adult immune function in humans across several functional assays. Adult participants provided retrospective information about the...

These studies draw on evolutionary psychology and intrasexual female competition to examine why female shoppers often prefer working with gay male sales associates over heterosexual female sales associates. Study 1 finds that female shoppers often attribute trustworthiness to gay male sales associates. Study 2 draws on theories of intrasexual co...

We examined relationships between multiple sources of early life stress and adult immune function in humans. Adult participants provided retrospective information about their childhood a) socioeconomic status, b) household unpredictability, and c) exposure to adverse experiences. Participants’ peripheral blood mononuclear cells were then isolated f...

This research: (1) implements a genetically informed design to examine the effects of fathers’ presence–absence and quality of behavior during childhood/adolescence on daughters’ frequency of substance use during adolescence; and (2) tests substance use frequency as mediating the relation between paternal behavior and daughters’ sexual risk taking....

This special issue includes state-of-the-art papers that leverage various theories from evolutionary psychology (EP) to shed light on important consumption-related phenomena. Our guest editorial provides an overview of this EP-based consumer research, highlighting the key content, common denominators, and significant strengths of the articles. The...

Although the criminal justice system is designed around the idea that individuals are invariant in their responses to punishment, research indicates that individuals exhibit a tremendous amount of variability in their punishment sensitivity. This raises the question of why; what are the individual- and situation-level variables that impact a person...

A growing body of research indicates that one's early life experiences may play an important role in regulating patterns of energy intake in adulthood. In particular, adults who grew up under conditions characterized by low socioeconomic status (SES) tend to eat in the absence of hunger (EAH), a pattern that is not generally observed among higher-S...

Over the past 30 years, the field of evolutionary psychology has made tremendous strides in identifying the adaptive function(s) served by numerous features of human nature. In so doing, the field has provided researchers in psychology new insights into the design of the human mind. As the field continues to mature, however, the next big question t...

A growing body of research suggests that hormonal contraceptive (HC) use may be associated with lower self-control, as well as structural and functional differences in women's brains that could contribute to differences in perseverance on tasks requiring cognitive control. Here, we sought to extend this research by examining the relationship betwee...

This groundbreaking book sheds light on how hormonal birth control affects women--and the world around them--in ways we are just now beginning to understand. By allowing women to control their fertility, the birth control pill has revolutionized women's lives. Women are going to college, graduating, and entering the workforce in greater numbers tha...

Guided by insights from evolutionary models of women’s mate preferences, we hypothesized resource scarcity cues will increase women’s desire for men owning luxury products and men’s desire to purchase them. We tested this hypothesis across three studies, using recession (versus control) cues to manipulate resource scarcity. The first study revealed...

Objective Here, we provide an experimental test of the relationship between levels of proinflammatory cytokines and present-focused decision-making. Methods We examined whether increases in salivary levels of proinflammatory cytokines (interleukin-1β and interleukin-6) engendered by visually priming immunologically-relevant threats (pathogen threa...

Much research finds that early life socioeconomic disadvantage predicts poorer health later in life, even among those whose conditions improve in adulthood. Although there are numerous factors that contribute to this association, recent research suggests that growing up in adverse socioecological environments may promote developmental patterns that...

A growing body of research finds that the activities of the immune system—in addition to protecting the body from infection and injury—also influence how we think, feel, and behave. Although research on the relationship between the immune system and psychological and behavioral outcomes has most commonly focused on the experiences of those who are...

Winter is characterized by stressful conditions which compromise health and render animals more vulnerable to infection and illness than during other times of the year. Organisms are hypothesized to adapt to these seasonal stressors by increasing investment in immune function in response to diminished photoperiod duration. Here, we examined this hy...

Guided by paternal investment theory (PIT), the current research examines the effects of fathers on daughters' expectations for men in adulthood, and the role of these expectations in mediating women's short-term (casual or uncommitted) sexual behavior. Using a genetically informed differential sibling-exposure design (N = 223 sister pairs from div...

Here, we propose a novel theoretical model linking present-focused decision-making to the activities of the immune system. We tested our model by examining the relationship between inflammatory activity – in vivo and in vitro – and decision-making characterized by impulsivity, present focus, and an inability to delay gratification. Results support...

Abstract: Although frequently characterized as undesirable, risk-taking is an integral part of human social life. Research into the factors that influence risk-taking therefore represents an important area of study in the evolutionary sciences. The current research draws from research on humans’ pathogen avoidance psychology, life history theory, a...

We live in a world where physical threats, to ourselves and to our loved ones, are made salient every single day in the news and in the entertainment that we consume. Our research provides initial evidence that consumers survive in such a world by purchasing luxury brands to act as safety shields against these threats. This is because consumers der...

Across three studies, we explore the relationship between cosmetic surgery, which functions as a costly appearance-enhancement tactic, and women's short-term mating effort. Study 1 demonstrates that women who exert increased short-term mating effort are more accepting of costly appearance-enhancement techniques (i.e., cosmetic surgery), but not rel...

The human menstrual cycle is characterized by substantial variability both within and between women. Here, we sought to account for such variability by examining whether human menstrual cycle frequency varies as a function of the projected fitness payoffs associated with investment in mating effort. We used structural equation modeling to test the...

Here, we present a mechanistically grounded theory detailing a novel function of the behavioral immune system (BIS), the psychological system that prompts pathogen avoidance behaviors. We propose that BIS activity allows the body to downregulate basal inflammation, preventing resultant oxidative damage to DNA and promoting longevity. Study 1 invest...

The current research examines the impact of women’s early-life socioeconomic status (SES; used as a proxy measure of life history strategy), relationship status, and ovulatory cycle phase on their desire for short-term mating. Results revealed that during the periovulatory phase (i.e., the high-fertility phase of the monthly ovulatory cycle), singl...

Objective: The current research examined whether cognitive schemas that emerge in the context of early life stress predict psychological and behavioral outcomes that increase obesity risk. Three studies tested this hypothesis, predicting that having an unpredictability schema-which is a mindset characterized by the belief that the world and the pe...

Previous research demonstrates that women’s beauty is rewarded across a myriad of social contexts, especially by men. Accordingly, from a functional perspective, another woman’s attractiveness can signal competitive disadvantage—and evoke negative responses—among female observers. Further, because the benefits of beauty are rewarded based on superf...

The behavioral immune system is a motivational system that helps minimize infection risk by changing cognition, affect, and behavior in ways that promote pathogen avoidance. In the current paper, we review foundational concepts of the behavioral immune system and provide a brief summary of recent social psychological research on this topic. Next, w...

Previous research on determinants of marital and reproductive timing focused on factors prominent in evolutionary theories. We focused on complementary factors prominent in research on attitudes, social cognition, and personality. Attitude construal and situated inference theories hold that priming can increase the accessibility of specific concept...

Pepper & Nettle's theory of the behavioral constellation of deprivation (BCD) would benefit from teasing apart the conceptually distinct – although related – constructs of predictability and control. Our commentary draws from prior research conducted in the learning domain to demonstrate that predictability moderates the effects of control and inde...

Previous research demonstrates reliable associations between low paternal investment and daughters’ precocious and risky sexual behavior. However, little is known about the psychological changes that occur in response to paternal disengagement that encourage these patterns. Here, we aim to redress this empirical gap by testing the effects of patern...

La psychologie évolutionniste a fourni un apport considérable à plusieurs secteurs de recherche en psychologie, incluant la science du bonheur. Certains obstacles à l’atteinte du bonheur sont identifiés : une discordance entre environnements ancestraux et modernes ainsi que des mécanismes psychologiques façonnés par la sélection qui induisent des a...

The target article explores the role of food insecurity as a contemporary risk factor for human overweight and obesity. The authors provide conditional support for the insurance hypothesis among adult women from high-income countries. We consider the potential contribution of additional factors in producing variation in adiposity patterns between s...

Here we review research suggesting that vulnerability to disease plays a significant role in modulating life history strategies. In particular, we highlight the role of immunocompetence in life history tradeoffs, predicting that individuals whose immune systems leave them more vulnerable to disease should exhibit a range of psychological and behavi...

Previous research indicates that women find men more desirable when they appear to be desired by other women than in the absence of such cues—an effect referred to as female mate choice copying. Female mate choice copying is believed to emerge from a process whereby women use the presence of a man’s mate as a cue to his own quality. Here, we test t...

Much research in social psychology has investigated the impact of bodily energy need on cognition and decision-making. As such, blood glucose, the body's primary energy source, has been of special interest to researchers for years. Fluctuations in blood glucose have been linked to a variety of changes in cognitive and behavioral processes, such as...

Life-history theory predicts that exposure to conditions typical of low socioeconomic status (SES) during childhood will calibrate development in ways that promote survival in harsh and unpredictable ecologies. Guided by this insight, the current research tested the hypothesis that low childhood SES will predict eating in the absence of energy need...

Researchers in the evolutionary sciences have long understood men's desire to mate with a variety of women. Because men's obligatory investment in offspring production is relatively small, men can directly increase their number of descendants by mating with multiple partners. Relatively less is known, however, about the conditions that favor sexual...

Traditional models hold that attitudes are relatively stable, enduring dispositions, stored in and retrieved from memory, that direct people’s favorable or unfavorable evaluations. Construal models, in contrast, hold that people construct their evaluative responses online, based in part on whichever of an attitude object’s attributes happen to beco...

Much empirical evidence suggests that “what is beautiful is good,” particularly for women. Whether in the courtroom or the classroom, attractive women enjoy a variety of benefits not available to their less attractive peers. It is therefore often in a woman’s best interest to engage in efforts to enhance her appearance. Women utilize a number of st...

An abundance of research demonstrates a robust association between father absence-or low-quality paternal involvement-and daughters' accelerated sexual development, promiscuity, and sexual risk taking. Although recent natural experiments provide support for fathers playing a causal role in these outcomes, these effects have not been examined using...

We used insights from life history theory and the critical fat hypothesis to explore how environmental harsh-ness influences women's food and weight regulation psychology. As predicted by our theoretical model, women who grew up in poorer, more unpredictable environments responded to harshness cues in their adult environments by exhibiting a greate...

We used insights from life history theory and the critical fat hypothesis to explore how environmental harsh-ness influences women's food and weight regulation psychology. As predicted by our theoretical model, women who grew up in poorer, more unpredictable environments responded to harshness cues in their adult environments by exhibiting a greate...

The present research uses insights from evolutionary psychology and social cognition to explore the relationship between jealousy-both experimentally activated and chronically accessible-on men's and women's desire to start a family and invest in children. In our first two studies, we found that chronically jealous men and women responded to primed...

Although research has made progress in elucidating the benefits exchanged within same- and opposite-sex friendships formed between heterosexual men and women, it is less clear why straight women and gay men form close relationships with one another. The current experiments begin to address this question by exploring a potential benefit hypothesized...

Why do researchers regularly observe a relationship between ecological conditions and the heaviness of female body weight ideals? The current research uses insights from life history theory and female reproductive physiology to examine whether variability in female body ideals might emerge from the different life history strategies typically adopte...

In two studies, we explore causal domains of envy and test predictions about whether it is sex differentiated in nature. Study 1 explored the contexts in which envy is most frequently experienced by men and women. Study 2 built on these results, explicitly testing predictions about sex differences in envy. The results provide needed insight into se...

Recent research has demonstrated that people have an affinity for non-human entities that appear to have human qualities. The current studies build on this research, examining whether anthropomorphism can be used to promote animal welfare. In Study 1 (n = 42), participants read scenarios about dogs and reported more willingness to help the ones des...

Recent research has demonstrated that people have an affinity for non-human entities that appear to have human qualities. The current studies build on this research, examining whether anthropomorphism can be used to promote animal welfare. In Study 1 (n = 42), participants read scenarios about dogs and reported more willingness to help the ones des...

Although consumer spending typically declines in economic recessions, some observers have noted that recessions appear to increase women's spending on beauty products--the so-called lipstick effect. Using both historical spending data and rigorous experiments, the authors examine how and why economic recessions influence women's consumer behavior....

In a series of 4 experiments, we provide evidence that--in addition to having an affective component--envy may also have important consequences for cognitive processing. Our first experiment (N = 69) demonstrated that individuals primed with envy better attended to and more accurately recalled information about fictitious peers than did a control g...

Recent research shows that women experience nonconscious shifts across different phases of the monthly ovulatory cycle. For example, women at peak fertility (near ovulation) are attracted to different kinds of men and show increased desire to attend social gatherings. Building on the evolutionary logic behind such effects, we examined how, why, and...

Two experiments explored the possibility that specific health risks observed among young women may be influenced by attractiveness-enhancement goals associated with mating. Study 1 (n=257) demonstrated that priming women with intersexual courtship and intrasexual competition increased their willingness to go tanning and take dangerous diet pills. S...

Although research indicates that individuals generally favor certain prospects over those whose outcomes are more variable, risk-aversion does not characterize human decision-making across domains. Here, we use an evolutionary perspective to explore the role that concerns with relative position play on preferences for certain versus probabilistic o...

At first glance, envy appears to be a maladaptive emotion. A great deal of subjective distress, workplace angst, and sibling rivalry owes itself to this potentially destructive emotion. Envy, however, is as ubiquitous as it is socially undesirable. Young children and adults alike are quick to take note when something is "not fair," although over ti...

Two studies measured self-esteem across the menstrual cycle to test the prediction that self-esteem will vary interindividually as a positive function of mate value and intraindividually as a negative function of fertility status. Study 1 (n = 52) found that self-esteem was positively related to mate value between women but that women experienced a...

Men's and women's mate preferences impose on each a unique set of adaptive problems that must be solved when judging the desirability of prospective mates. One potentially revealing source of information about an individual's desirability as a romantic partner is contained in the decisions made by same-sex others. The present studies predicted that...

Evolutionary psychology seeks to synthesize fundamental principles of evolutionary biology with modern psychological theories, leading to testable hypotheses about the design of the human mind. The success of evolutionary psychology as a meta-theoretical framework for building conceptually-integrated scientific models of psychological phenomena—esp...

It has been proposed that selection has shaped the human mind to be predictably biased in domains where the costs of false-positive and false-negative errors have been asymmetrical throughout human evolutionary history. Using this logic, the current study predicts that men and women systematically overestimate the degree to which members of the opp...

We propose that humans have evolved at least two specialized cognitive adaptations shaped by selection to solve problems associated with resource competition: (1) a positional bias by which individuals judge success in domains that affect fitness in terms of standing relative to their reference group; and (2) envy, an emotion that functions to aler...

Female mate choice copying is a socially mediated mate choice behaviour, in which a male's attractiveness to females increases if he was previously chosen by another female as a mate. Although copying has been demonstrated in numerous species, little is known about the specific benefits it confers to copying females. Here we demonstrate that the ma...

For decades, evolutionary biologists and anthropologists have puzzled over the negative relationship that exists between wealth and fertility in humans. Particularly mystifying have been that (1) humans do not appear to translate their reproductive resources into additional offspring, and (2) attempts to model natural selection resulting in a negat...

We propose a new, evolutionary, game-theoretic model of conditional human mating strategies that integrates currently disconnected bodies of data into a single mathematically-explicit theory of human mating transactions. The model focuses on the problem of how much resource a male must provide to a female to secure and retain her as a mate. By usin...

In 2004, Fisher, Kruger, Platek, and Salmon published an article describing their experiences as recent graduate students and newly hired faculty with strong interests in Evolutionary Psychology. Part of the intent was to offer guidance to students and their supervisors on how to become established in the field. Five years have past since the initi...