The behavioral origins of phylogenic responses and ontogenic habits

An examination of innate behavior and its possible origins suggests parallels with the formation of habitual behavior. Inflexible but adaptive responses—innate reflexive behavior, Pavlovian conditioned responses, and operant habits—may have evolved from variable behavior in phylogeny and ontogeny. This form of “plasticity-first” scientific narrative was unpopular post-Darwin but has recently gained credibility in evolutionary biology. The present article seeks to identify originating events and contingencies contributing to such inflexible but adaptive behavior at both phylogenic and ontogenic levels of selection. In ontogeny, the development of inflexible performance (i.e., habit) from variable operant behavior is reminiscent of the genetic accommodation of initially variable phylogenic traits. The effects characteristic of habit (e.g., unresponsiveness to reinforcer devaluation) are explicable as the result of a conflict between behaviors at distinct levels of selection. The present interpretation validates the practice of seeking hard analogies between evolutionary biology and operant behavior. Finding such parallels implies the validity of a claim that organismal behavior, both innate and learned, is a product of selection by consequences. A complete and coherent account of organismal behavior may ultimately focus on functional selective histories in much the same way evolutionary biology does with its subject matter.     

Serotonin transporter and BDNF polymorphisms interact to predict trait worry

Background and Objectives: Excessive worry is associated with a range of psychological disorders. While previous studies have examined genes associated with a range of different anxiety phenotypes, none have explored genes specifically associated with the general tendency to worry. Design: The present study tested associations between trait worry and functional polymorphisms of three candidate genes: the serotonin transporter-linked polymorphic region (5-HTTLPR) of the SLC6A4 gene, the Val66Met region of the brain-derived neurotrophic factor (BDNF) gene, and the Val158Met region of the catechol-O-methyltransferase (COMT) gene. Methods: A heterogeneous sample of adult participants (n = 173) completed the Penn State Worry Questionnaire (PSWQ) and provided DNA samples for genotyping. Results: Results revealed a significant interaction between 5-HTTLPR and BDNF genotypes predicting levels of worry. Specifically, there was a significant positive association between 5-HTTLPR short alleles and PSWQ scores, but only in BDNF met allele carriers. COMT genotype was not significantly associated levels of worry, nor did COMT interact with 5-HTTLPR or BDNF genotypes to predict PSWQ scores. Conclusions: These findings provide preliminary evidence about the putative genetic etiology of worrying. Key limitations of the present study and corresponding directions for future research on this topic are discussed.     

Strange Affinities in the Search for Personalized Health: New Age Practices and Genetic Testing

A prominent focus of New Age beliefs and practices has always been health and healing—including the use of holistic healing, power crystals, homeopathy, and complementary and alternative medicine. Given its association with modern science and medicine, genetic testing would seem to run counter to New Age alternative medical practices. On the other hand, the use of at-home genetic health tests and the use of such New Age alternative medical practices could both be motivated by a desire for personalized healthcare. Using data generated from a survey fielded on a probability sample of U.S. adults, we examine associations between individuals’ use of at-home genetic health tests and their use of power crystals and acupuncture or other homeopathic medicine. Logistic regression models find that those who use power crystals or homeopathic medicine have significantly greater odds of having used an at-home genetic health test. We discuss the implications of these findings for our understanding of the direct-to-consumer genetic testing market and the relationship between science, religion, and spirituality more broadly.     

Correlation between general factors for personality and cognitive skills in the National Merit twin sample

General factors of personality (based on the California Psychological Inventory) and cognitive skill (the National Merit Scholarship Qualifying Test selection score) were correlated .284 in a sample of 490 monozygotic and 317 dizygotic twin pairs. The correlation was partitioned into genetic, and shared and unshared environmental sources: approximately 39%, 50% and 11%, respectively. The results offered some support to a theory that such a correlation may reflect evolutionary trends, although questions remained about the role of nonadditive genetic variance and the nature of the selection involved.     

Do scientific theories affect men's evaluations of sex crimes?

Evolutionary psychology accounts of gender differences in sexual behaviors in general and men's sexual aggression, in particular, has been criticized for legitimizing males' sexual misconduct. To empirically assess such critiques, two studies examined how men's judgments of male sex crimes (solicitation of sex from a prostitute; rape) are influenced by exposure to (a) evolutionary psychological theories and (b) social‐constructivist theories. Across two studies, a consistent pattern emerged compared with a control condition (a) exposure to evolutionary psychology theories had no observable impact on male judgments of men's criminal sexual behavior, whereas (b) exposure to social‐constructivist theories did affect judgments, leading men to evaluate sex crimes more harshly. Additional results (from Study 2) indicate that this effect is mediated by perceptions of male control over sexual urges. These results have implications for journalists, educators, and scientists. Aggr. Behav. 37:440–449, 2011. © 2011 Wiley‐Liss, Inc.     

Australian community responses to the use of genetic testing for personalised health promotion

Personalised genetic health promotion may soon be available and affordable. To explore its likely public acceptance in Australia, a community sample (N = 800) provided quantitative and qualitative responses to a vignette scenario about a hypothetical expert who could test their genes and, based on this genetic profile, provide personalised health promotion advice. Three theoretical models were tested to explicate the process by which cognitive–affective factors of risk beliefs, benefit beliefs, and trust judgements influenced behavioural intentions. Results supported an expert trust model, where general beliefs about the risks and benefits of medical advances and general medical trust had indirect influences, while trust in a specific medical expert had a direct influence, on health promotion intentions. Subjective reasons for intentions included moral concerns, fear, trust, mistrust and a desire to maintain health at any cost. The advent of personalised genetic health promotion may heighten the need for specialised health psychologists.     

Closeness or compassion? Relatedness and causal control influence helping via distinct pathways

ABSTRACT

Why do people feel compassion? Two largely separate research literatures – one driven by evolutionary psychology and one driven by attribution theory – have shown that feelings of compassion for needy individuals and subsequent helping are predicted by both genetic relatedness and causal control. Research also suggests that emotional closeness, rather than compassion, motivates help for family. In two studies, we tested the role of genetic relatedness and control on cognitive and emotional mediators of helping. Results revealed that relatedness and control had distinct and independent effects on willingness to help needy individuals that were mediated by emotional closeness and compassion, respectively. These results provide a unique bridging of disparate literatures and suggest that emotional closeness and compassion serve distinct functions in facilitating prosocial behavior.     

“Doubly Mother”: Heterologous Artificial Insemination Between Biological and Social Parenthood: A Single Case Study

In heterologous artificial insemination, the donation of gametes (either sperm or eggs) from a third person allows infertile and same-sex couples to become parents. Therefore, the child is genetically related to one parent, while the other parent is referred to as the social mother or father. This current single case study aimed at investigating this double access to parenthood in a lesbian couple who had two children after heterologous artificial insemination. In this couple, both women delivered one of the two children, so that each partner is either biological or social mother. The Clinical Generational Interview was used to assess the quality of family relationships, with a specific focus on three dimensions: the origins of each partner, the constitution of the couple, and the generational passage. Paper and pencil textual analysis was conducted following the principles of Interpretative Phenomenological Analysis and led to the identification of six dominant themes (and subthemes): (a) relationship with the family of origin; (b) couple relationship; (c) generational passage; (d) heterologous artificial insemination and “double motherhood”; (e) donor/biological father; and (f) children identity and the disclosure of their origin. This study’s findings revealed the importance of using research techniques aimed at in-depth exploration of this phenomenon consistently with the specificities of the new filiation forms. The adoption of a transgenerational perspective allows articulating conception coordinates with the history of the couple and each partner’s origins.     

Reassessing the Ethics of Molecular HIV Surveillance in the Era of Cluster Detection and Response: Toward HIV Data Justice

Abstract

In the United States, clinical HIV data reported to surveillance systems operated by jurisdictional departments of public health are re-used for epidemiology and prevention. In 2018, all jurisdictions began using HIV genetic sequence data from clinical drug resistance tests to identify people living with HIV in “clusters” of others with genetically similar strains. This is called “molecular HIV surveillance” (MHS). In 2019, “cluster detection and response” (CDR) programs that re-use MHS data became the “fourth pillar” of the national HIV strategy. Public health re-uses of HIV data are done without consent and are a source of concern among stakeholders. This article presents three cases that illuminate bioethical challenges associated with re-uses of clinical HIV data for public health. We focus on evidence-base, risk-benefit ratio, determining directionality of HIV transmission, consent, and ethical re-use. The conclusion offers strategies for “HIV data justice.” The essay contributes to a “bioethics of the oppressed.”     

Führt die evolutionäre Erkenntnistheorie in einen Relativismus?

This essay is a discussion of Eve-Marie Engels' view on Evolutionary Epistemology (EE). In the first part two of the main doctrines of EE are criticized: (1.) that validity of human knowledge is to be explained as the result of evolutionary adaptation; yet (2.), that human cognitive capacities had been adequate to our ancestors life conditions but fail in relevant situations of modern world. In the second part the concept of reality underlying EE's adaptational view is discussed and compared with Jean Piaget's concept of reality. Finally, it is held that some of the questions recently raised by proponents of EE, far from being new, have been dealt with already in historical epistemology.

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Diese Arbeit entstand im Rahmen des Projekts Nr. 11-2224.87 des Schweizerischen Nationalfonds.