Flesh Without Blood: The Public Health Benefits of Lab-Grown Meat.

Synthetic meat made from animal cells will transform how we eat. It will reduce suffering by eliminating the need to raise and slaughter animals. But it will also have big public health benefits if it becomes widely consumed.

Can 'eugenics' be defended?

In recent years, bioethical discourse around the topic of 'genetic enhancement' has become increasingly politicized. We fear there is too much focus on the semantic question of whether we should call particular practices and emerging bio-technologies such as CRISPR 'eugenics', rather than the more important question of how we should view them from the perspective of ethics and policy. Here, we address the question of whether 'eugenics' can be defended and how proponents and critics of enhancement should engage with each other.

Alcohol and disgust: An intimate relationship.

Background: Alcohol intoxication has been associated with increases in risk taking behavior and more ambiguously, alterations in emotional perception. In the first study of its kind, we examine how theories of disgust can be used to help explain these effects.

Methods: Using a single-blind procedure, participants (n = 73) were randomly allocated to an alcohol (Males: 0.

Making your skin crawl: The role of tactile sensitivity in disease avoidance.

Mounting evidence indicates that animals, including humans, have evolved a behavioral disease-avoidance system designed to facilitate the detection and avoidance of sources of pathogens, and that this system interacts with physiological defenses. The skin acts as an important anatomical barrier, yet little research has investigated the role of tactile sensitivity in disease avoidance. Increased tactile sensitivity in the presence of potential sources of pathogens may facilitate prophylactic behaviors such as self-grooming.

Disgust versus Lust: Exploring the Interactions of Disgust and Fear with Sexual Arousal in Women.

Sexual arousal is a motivational state that moves humans toward situations that inherently pose a risk of disease transmission. Disgust is an emotion that adaptively moves humans away from such situations. Incongruent is the fact that sexual activity is elementary to human fitness yet involves strong disgust elicitors.

Testing the Affiliation Hypothesis of Homoerotic Motivation in Humans: The Effects of Progesterone and Priming.

The frequency of homoerotic behavior among individuals who do not identify as having an exclusively homosexual sexual orientation suggests that such behavior potentially has adaptive value. Here, we define homoerotic behavior as intimate erotic contact between members of the same sex and affiliation as the motivation to make and maintain social bonds. Among both male and female nonhuman primates, affiliation is one of the main drivers of homoerotic behavior.

Menstrually related mood disorders and a history of abuse: moderators of pain sensitivity.

Objective: Women with a menstrually related mood disorder (MRMD) have substantially higher rates of physical and sexual abuse and are more sensitive to experimental pain stimuli than women without a MRMD. For the first time, this study examined pain sensitivity and hormonal correlates in women with a MRMD and in non-MRMD controls as a function of abuse history.

Methods: A total of 126 women (63 with MRMD, 34 with an abuse history; and 63 non-MRMD, 31 with an abuse history) were evaluated for: (1) sensitivity to cold pressor and forearm ischemic pain and (2) basal plasma cortisol and norepinephrine (NE) concentrations.

Sensor recorded changes in rates of hand washing with soap in response to the media reports of the H1N1 pandemic in Britain.

Objectives To examine how the frequency of information regarding a real disease threat influences hand washing with soap. Design and setting The authors installed wireless devices in highway service station lavatories in England to record the proportion of individuals washing hands with soap from May 2009 to January 2010. Participants Participants were users of men's and women's toilets.

Progesterone's effects on the psychology of disease avoidance: support for the compensatory behavioral prophylaxis hypothesis.

In the human menstrual cycle, luteal phase immunomodulation prevents the maternal immune system from attacking the half-foreign blastocyst should conception occur, thereby facilitating implantation and development. However, tolerance of the conceptus comes at the cost of increased vulnerability to infection. The compensatory behavioral prophylaxis hypothesis (Fessler, 2001; Fessler & Navarrete, 2003) holds that evolved psychological mechanisms enhance avoidance of potential contaminants during periods of reproductive immunomodulation so as to decrease the likelihood of infection.

Trade-offs, individual differences, and misunderstandings about evolutionary psychology.

Replies to comments on Evolutionary psychology: Controversies, questions, prospects, and limitations (see record 2010-02208-001) by Confer et al. The purpose of which was to clarify the logic of evolutionary psychology and clear up some of the more common misunderstandings about it. In this response, we address the key points raised by the commentators.

Evolutionary psychology. Controversies, questions, prospects, and limitations.

Evolutionary psychology has emerged over the past 15 years as a major theoretical perspective, generating an increasing volume of empirical studies and assuming a larger presence within psychological science. At the same time, it has generated critiques and remains controversial among some psychologists. Some of the controversy stems from hypotheses that go against traditional psychological theories; some from empirical findings that may have disturbing implications; some from misunderstandings about the logic of evolutionary psychology; and some from reasonable scientific concerns about its underlying framework.

Race bias tracks conception risk across the menstrual cycle.

Although a considerable body of research explores alterations in women's mating-relevant preferences across the menstrual cycle, investigators have yet to examine the potential for the menstrual cycle to influence intergroup attitudes. We examined the effects of changes in conception risk across the menstrual cycle on intergroup bias and found that increased conception risk was positively associated with several measures of race bias. This association was particularly strong when perceived vulnerability to sexual coercion was high.