• courtship
  • A male fly's sexual courtship of a female fly is a complicated business of tapping, singing, wing vibration, and licking, but a single gene is all that is needed to produce this complex behavior, according to new research published in this week's issue of the journal Cell. (eurekalert.org)
  • So you need to put gene X in a normal animal of the same species that doesn't normally do Y. This is really only possible with sex-specific behaviors" like courtship, he says. (eurekalert.org)
  • While lactating mice will ordinarily attack male intruders and reject their courtship behaviors, the mutant females were docile toward males and appeared highly receptive to their overtures. (phys.org)
  • homosexual
  • Another example is when individuals or members of a community might engage in homosexual behaviors but identify as heterosexual otherwise, such as some people in prison, the military, single sex boarding schools, or other sex-segregated communities. (wikipedia.org)
  • Pseudo-homosexuality refers to homosexual anxieties, fantasies, or behavior exhibited by a person who self-identifies as heterosexual or who is generally attracted or sexually oriented to members of the opposite sex. (wikipedia.org)
  • They cover homosexuality in both humans and other animals, citing evidence of accepted homosexual behavior in 49 of the 76 cultures for which the relevant data were available. (wikipedia.org)
  • The study is credited with "making homosexual behavior more visible and more acceptable within the culture of its time. (wikipedia.org)
  • There have also been observations of animals engaging in homosexual behaviors, as well as sex with dead animals and sex involving juveniles. (wikipedia.org)
  • behavioral
  • A simple model of sexual behavior choice among forward-looking individuals implies that behavioral response should be larger for those with lower non-HIV mortality risks and those who are richer. (repec.org)
  • Dickson and Demir refer to fruitless as a behavioral "switch gene" that is both necessary and sufficient to produce a particular behavior. (eurekalert.org)
  • Sexual health risk reduction can include motivational exercises, assertiveness skills, educational and behavioral interventions. (wikipedia.org)
  • Ford and Beach employ a "cross-cultural correlational method" in exploring sexual behavior, a statistical approach suitable for distinguishing behavioral trends and making generalizations. (wikipedia.org)
  • Self-reported assessments of sexual behavior are prone to a number of measurement concerns which may affect the reliability and validity of a measure, ranging from a participant's literacy level and comprehension of behavioral terminology to recall biases and self-presentation (or confidentiality concerns resulting from stigmatization of the behavior in question). (wikipedia.org)
  • Self-report measures are both inexpensive and more feasible than behavioral observation given the private nature of most sexual risk behaviors. (wikipedia.org)
  • Sensory
  • Rather, they say, the epicenter of sex-specific behavior in many species may be a small sensory organ found in the noses of all terrestrial vertebrates except higher primates. (phys.org)
  • pelvic
  • Their work, appearing this week in the journal Nature , indicates that defects in this organ, known as the vomeronasal organ, lead female mice to adopt male behaviors such as mounting and pelvic thrusting while abandoning female behaviors such as nesting and nursing. (phys.org)
  • vomeronasal
  • The results do not apply directly to humans, which lack a vomeronasal organ, but may open new avenues of investigation for research into sex-specific human behavior. (phys.org)
  • Either the vomeronasal organ may be needed to grow a female-specific neural circuit during development, or the mature female mouse brain may require vomeronasal activity to repress male behavior. (phys.org)
  • Remarkably, our work suggests that neuronal circuits underlying male-specific behaviors develop and persist in the female mouse brain, but are repressed by the normal activity of the vomeronasal organ. (phys.org)
  • In this model, only the vomeronasal pathway itself -- which serves as a switch that represses male behavior while promoting female behavior -- is dimorphic. (phys.org)
  • genital
  • That's currently up for debate, now that Tennessee Gov. Bill Haslam has signed into law the controversial bill that would ban teachers from discussing any so-called gateway sexual activity like genital touching in sex education courses, as reported on Friday by the Nashville Tennessean . (go.com)
  • What's more, educators are prohibited from discussing non-coital sexual activity such as genital touching as an alternative to sex, which legislators have designated as the offending "gateway" sexual behavior. (go.com)
  • Family Action Council President David Fowler , who drafted helped draft the bill, told the website PolitiFact.com that the definition of "gateway sexual activity" is akin to the definition of "sexual contact" according to the state's criminal law, which refers to the "intentional touching" of "the primary genital area, groin, inner thigh, buttock or breast of a human being. (go.com)
  • suggests
  • Some evidence suggests that the availability of ART may impact risky behavior among HIV-uninfected people, although this was inconsistent across different reported behavior variables," according to the results. (thebody.com)
  • hormones
  • It had previously been thought that entirely different neural circuits, modulated by these hormones, controlled sex-specific behavior," Dulac says. (phys.org)
  • Estrogen is one of the two major sex hormones in women (the other being progesterone), and is responsible for the development and maintenance of feminine secondary sexual characteristics, such as breasts, wide hips, and a feminine pattern of fat distribution. (wikipedia.org)
  • masculine
  • The effects of b -endorphin or naloxone on measures of masculine sexual behavior. (acnp.org)
  • Hormone replacement therapy (HRT) of the male-to-female (MTF) type is hormone replacement therapy and sex reassignment therapy used to change the secondary sexual characteristics of transgender and transsexual people from masculine (or androgynous) to feminine. (wikipedia.org)
  • activity
  • These early traumatic experiences may lead you to feel shameful and unworthy, emotions that can inhibit normal sexual expression and intimacy and can result in extremes in sexual activity. (dreddyclinic.com)
  • Sexual activity among young single people tends to be sporadic, but is greater in industrialized countries. (medindia.net)
  • The latest estimates suggest 12.5 per cent of boys and 6.9 per cent of girls have had sex before the age of 15, but these figures may be skewed by the tendency of boys to exaggerate sexual activity. (medindia.net)
  • If marijuana is the gateway drug, are kissing and handholding the gateway to sexual activity? (go.com)
  • Everybody in this room knows what gateway sexual activity is," said state Rep. John DeBerry, D-Memphis , in his testimony to the Tennessee House of Representatives. (go.com)
  • Several species in the animal kingdom turn to sexual activity as a way to solve a disagreement. (wikipedia.org)
  • Sexual activity in bonobos is very high, yet the rate of reproduction is the same as a chimpanzee. (wikipedia.org)
  • When hungry, the female bonobo will approach a male bonobo and engage in sexual activity to avoid aggression. (wikipedia.org)
  • After their quick sexual activity, the female will take a portion of the male's food. (wikipedia.org)
  • Only a low level of sexual activity among the approximately 800 teenagers surveyed was found with incidence increasing with age. (wikipedia.org)
  • species
  • Putting gene X into another species and expecting to see a behavior is unrealistic--a 'flight' gene from Drosophila, if it existed, is not going to make a mouse fly," Dickson explains, noting that only members of the same species might be expected to share the same set of "normal" behaviors. (eurekalert.org)
  • In this work of scientific literature, the authors integrate information about human sexual behavior from 191 different cultures, and include detailed comparisons across animal species, with particular emphasis on primates. (wikipedia.org)
  • Non-reproductive sexual behavior is sexual activities animals participate in that do not lead to the reproduction of the species. (wikipedia.org)
  • Bonobos are one species notoriously known for using sexual behavior to relieve their aggression with each other. (wikipedia.org)
  • symptoms
  • The self-reported STI-like symptoms and unsafe sexual behavior taken together as a predictor of confirmed STIs improve the sensitivity to a significantly greater degree (χ 2 = 2.83, p (wikipedia.org)
  • These results provide preliminary support for the importance of population-based surveys, which collect all the three types of data such as reported behavior, symptoms and laboratory confirmed STIs for a full understanding of sexual risk and STIs and for identification of sub-groups within communities that vary in their ability to identify STI symptoms. (wikipedia.org)
  • permissive
  • Among the findings of a sweeping federal government survey of American sexual behavior is one that may surprise those bewailing a permissive and eros-soaked popular culture: More than one-quarter of people interviewed in their late teens and early 20s had never had sex. (washingtonpost.com)
  • laboratory
  • The behavior of laboratory animals demonstrates a mental experience wherein the animal's instincts tell it if it carries out a certain action, it will then receive what it needs. (wikipedia.org)
  • participants
  • The current study examined evidence for sexual behavior change in response to antiretroviral therapy (ART) among participants of a clinical cohort in Uganda. (thebody.com)
  • Three-month data from 2002 to 2009 were used to examine associations between ART initiation timing and sexual behavior among HIV-infected participants, and timing of ART availability and sexual behavior among uninfected participants. (thebody.com)
  • receptivity
  • Undaunted, Hatfield went on to write or co-write many books and papers based on her research, among them A New Look at Love, which won the American Psychological Foundation's National Media Award, and the often-cited Journal of Psychology and Human Sexuality article "Gender Differences in Receptivity to Sexual Offers" (1989). (wikipedia.org)
  • engagement
  • Dichotomous (yes/no) evaluation of engagement in risk behaviors (risk screening), assessing the level of risk via frequency of engagement in risk behaviors (risk assessments) and detailed event-level data related to the co-occurrence of other factors (e.g., alcohol use or primary versus secondary partners) that may facilitate engaging in risk behaviors (risk-event data) are unequivocal, serving very distinct functions in evaluating self-reported risk behavior. (wikipedia.org)
  • orientation
  • Where actual sex is sought as a result, pseudo-homosexuality is commonly distinguished from homosexuality in that it may not reflect a desire based on sexual orientation or honest curiosity. (wikipedia.org)
  • LGBT youth are more likely to be homeless because they run away or are evicted due to family conflict surrounding their sexual orientation or behavior. (wikipedia.org)
  • disorder
  • Despite their awareness of the condition, many sufferers often delay seeking help, either because they don't know that it's a medical disorder or for fear that others will instead judge it as willful behavior. (emaxhealth.com)
  • A major cause of the compulsive behaviors is said to be obsessive-compulsive disorder (OCD). (wikipedia.org)
  • versus
  • Dickson also says there is "something of a debate going on between the view that single genes can have profound effects on behavior, versus the more holistic view that behavior is so complex that we can never learn anything meaningful about a behavior by studying the action of a single gene. (eurekalert.org)
  • differences
  • For years, scientists have searched in vain for slivers of the brain that might drive the dramatic differences between male and female behavior. (phys.org)
  • Evidence
  • Learned behaviors that have been demonstrated in laboratories have provided good evidence that animals have instinct and a reward system. (wikipedia.org)
  • female
  • Dulac and colleagues are now studying the behavior of male mice mutant for TRPC2 to determine whether they display female-like traits. (phys.org)
  • Female bonobos have been observed to engage in sexual activities to create bonds with dominant bonobos. (wikipedia.org)
  • Sexual interaction has also been witnessed in female bonobos to avoid aggression. (wikipedia.org)
  • Sexual dimorphism (two forms) refers to the general phenomenon in which male and female forms of an organism display distinct morphological characteristics or features. (wikipedia.org)
  • Researchers
  • Switch genes that trigger the development of a particular anatomical feature like wing structure have been studied extensively, but there are very few studies of switch genes that control a complex behavior, the researchers note. (eurekalert.org)
  • work
  • Bell and Weinberg, writing with sociologist Sue Kiefer Hammersmith, noted that their work Sexual Preference (1981) was the culmination of a series of publications that began with Homosexuality: An Annotated Bibliography and included Homosexualities: A Study of Diversity Among Men and Women. (wikipedia.org)
  • different
  • I don't see any good reason why innate behaviors, which are a consequence of how the nervous system is built, should be any different. (eurekalert.org)
  • lack
  • Lack says it was the first complaint about Lauer's behavior during more than 20 years at NBC News, but there is reason to believe the reported incident may not be the only one. (thewesterlysun.com)
  • measures
  • Despite their frequency of use, the utility of self-report measures to provide an accurate account of actual behavior are questioned, and methods of enhancing their accuracy should be a critical focus when administering such measures. (wikipedia.org)
  • To this end, the validity of self-reported sexual risk measures can be strengthened by the level of concordant answers obtained from sexual partners or through more objective measures of risk (such as the incidence of pregnancy, HIV or other STDs. (wikipedia.org)
  • It is important to consider the way in which measures of self-reported sexual risk behaviors will be collected during the research development phase. (wikipedia.org)
  • among
  • If risky behavior among this population increases due to the feeling of safety that ART provides, this will affect the impact of ART on the HIV epidemic," the investigators concluded. (thebody.com)
  • Together with Homosexualities: A Study of Diversity Among Men and Women (1978), Homosexuality: An Annotated Bibliography is part of a series of books that culminated in the publication of Sexual Preference in 1981. (wikipedia.org)
  • akin
  • In addition, one study published in the Journal of the International AIDS Society used the term cisnormativity, akin to sexual diversity studies' heteronormativity. (wikipedia.org)