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PubMed2006

Does virtual intimacy exist? A brief exploration into reported levels of intimacy in online relationships.

This study examined the levels of intimacy reported by individuals in face-to-face and computer-mediated (or "virtual") romantic relationships. As suggested by the media and promised by online dating services, some degree of intimacy was reported in computer-mediated relationships, but stronger intimacy was reported in all participants' face-to-face relationships. Results also indicated that individuals who had online, virtual relationships reported less intimacy in their own face-to-face relationships compared to individuals who had engaged exclusively in face-to-face relationships, suggesting that people may turn to virtual relating after challenges in their face-to-face experiences.

Adolescent↗
PubMed2006

Spouse resemblance in body mass index: effects on adult obesity prevalence in the offspring generation.

Accruing evidence indicates that mate selection is promoted by similarity in body fatness. Assortative mating for obesity may contribute genetically to the obesity epidemic by increasing the risk in subsequent generations. To test this hypothesis, the authors analyzed measured and validated questionnaire data on family members, obtained between 1987 and 2000 from 7,834 obese probands and from 829 subjects randomly ascertained from the general Swedish population. Spouse correlations in body mass index were strongest among couples with the shortest duration of cohabitation. Obesity concordance in parents was associated with an obesity prevalence of 20.1% in adult offspring compared with 1.4% if parents were concordantly nonobese (odds ratio = 18.3, 95% confidence interval: 9.0, 37.4). The prevalence was 8.2% if parents were obesity discordant (odds ratio = 6.5, 95% confidence interval: 3.2, 13.2). No association was found between rearing parents' and nonbiologic offspring's body mass index. These results agree with the hypothesis that assortative mating for obesity confers a higher risk of obesity in the offspring generation and thus contributes to the obesity epidemic. Parental obesity concordance is a strong, easily identifiable genetic risk factor that should be considered in the complex network of risk factors for obesity in designing primary prevention programs.

Adult↗
PubMedDate not supplied

Age-specific fitness components in hybrid females of Drosophila pseudoobscura and D. persimilis.

Most models of hybridization assume that hybrids are less fit than their parental taxa. In contrast, some researchers have explored the possibility that hybrid individuals may actually have higher fitness and so play an important role in the generation of new species or adaptations. By estimating age-specific fitness components, we can determine not only how hybrid fitness differs from parental taxa, but also whether the fitness of hybrids relative to parental taxa changes with age. Here we describe an analysis of age-specific fitness traits in two species of Drosophila, D. pseudoobscura and D. persimilis, and their F1 hybrids. At early ages, hybrid females lay as many eggs as parental individuals, on average, but produce far fewer offspring. By late ages, in contrast, parental taxa show a steep decline in production not seen in hybrids, such that hybrids produce more offspring, on average, than parental taxa. Furthermore, egg-adult survival in hybrids is negatively correlated with egg density, whereas these traits are only weakly correlated in parental taxa. The results are limited somewhat by the fact that we analyze only two strains, and that these may be partially inbred. Nonetheless, the results are certainly illustrative, pointing out not only that at least some hybrid individuals may be as fit or fitter than parental taxa, but also that the difference between hybrids and parental taxa varies with age.

Age Factors↗
PubMed2004

Assumptions of Asian American similarity: the case of Filipino and Chinese American students.

The conventional research model of clustering ethnic groups into four broad categories risks perpetuating a pedagogy of stereotypes in social work policies and practice methods. Using an elaborated research model, this study tested the assumption of cultural similarity of Filipino and Chinese American college students by examining attitudes, perceptions, and beliefs related to dating violence. The sample included Chinese, Filipino, Hispanic, and white undergraduate students from a large urban university. Findings suggest that Filipino students are more similar to white students than to Chinese students. Regardless of ethnic group, women had more similarities with one another than men in their attitudes toward women. The findings were mixed regarding definitions and justifications of violence.

Adult↗
PubMedDate not supplied

Dating violence in college women: associated physical injury, healthcare usage, and mental health symptoms.

BACKGROUND: College-aged women report experiencing violence from a partner within the dating experience. OBJECTIVES: This study used a correlational design, to report physical injury, mental health symptoms, and healthcare associated with violence in the dating experiences of college women. METHODS: A convenience sample of 863 college women between 18 and 25 years of age from a private, historically Black university in the South, and a private college in the mid-Atlantic completed the Abuse Assessment Screen, a physical injury checklist, and the Symptom Checklist-R-90. Data analysis consisted of frequencies, ANOVA, and MANOVA. RESULTS: Almost half (48%) (n = 412) reported violence and, of these, 39% (n = 160) reported more than one form of violence. The most commonly reported injuries were scratches, bruises, welts, black eyes, swelling, or busted lip; and sore muscles, sprains, or pulls. Victims had significantly higher scores on depression, anxiety, somatization, interpersonal sensitivity, hostility, and global severity index than nonvictims. Victims of multiple forms of violence had significantly higher mental health scores and reported greater numbers of injuries than victims of a single form of violence. Less than half of those injured sought healthcare for injuries and less than 3% saw a mental health professional. DISCUSSION: Study findings suggest the importance of screening and identification of victims of violence. Knowledge of physical and mental health effects of violence can guide intervention, prevention, and health promotion strategies. Future research is needed to describe barriers to seeking healthcare, screening practices of college health programs, and programs to identify victims.

Adolescent↗
PubMed2004

Human bonding.

Explore the source record for details and available documents.

Courtship↗
PubMed2006

Inbreeding avoidance through non-random mating in sticklebacks.

Negative effects of inbreeding are well documented in a wide range of animal taxa. Hatching success and survival of inbred offspring is reduced in many species and inbred progeny are often less attractive to potential mates. Thus, individuals should avoid mating with close kin. However, experimental evidence for inbreeding avoidance through non-random mating in vertebrates is scarce. Here, we show that gravid female three-spined sticklebacks (Gasterosteus aculeatus) when given the choice between a courting familiar brother and a courting unfamiliar non-sib prefer to mate with the non-sib and thus avoid the disadvantages of incest. We controlled for differences in males' body size and red intensity of nuptial coloration. Thus, females adjust their courting behaviour to the risk of inbreeding.

Animals↗
PubMed1999

Facial attractiveness, symmetry and cues of good genes.

Cues of phenotypic condition should be among those used by women in their choice of mates. One marker of better phenotypic condition is thought to be symmetrical bilateral body and facial features. However, it is not clear whether women use symmetry as the primary cue in assessing the phenotypic quality of potential mates or whether symmetry is correlated with other facial markers affecting physical attractiveness. Using photographs of men's faces, for which facial symmetry had been measured, we found a relationship between women's attractiveness ratings of these faces and symmetry, but the subjects could not rate facial symmetry accurately. Moreover, the relationship between facial attractiveness and symmetry was still observed, even when symmetry cues were removed by presenting only the left or right half of faces. These results suggest that attractive features other than symmetry can be used to assess phenotypic condition. We identified one such cue, facial masculinity (cheek-bone prominence and a relatively longer lower face), which was related to both symmetry and full- and half-face attractiveness.

Adolescent↗
PubMed2001

Self-perceived attractiveness influences human female preferences for sexual dimorphism and symmetry in male faces.

Exaggerated sexual dimorphism and symmetry in human faces have both been linked to potential 'good-gene' benefits and have also been found to influence the attractiveness of male faces. The current study explores how female self-rated attractiveness influences male face preference in females using faces manipulated with computer graphics. The study demonstrates that there is a relatively increased preference for masculinity and an increased preference for symmetry for women who regard themselves as attractive. This finding may reflect a condition-dependent mating strategy analogous to behaviours found in other species. The absence of a preference for proposed markers of good genes may be adaptive in women of low mate value to avoid the costs of decreased parental investment from the owners of such characteristics.

Adolescent↗
PubMed2003

Variable preferences for sexual dimorphism in height as a strategy for increasing the pool of potential partners in humans.

Human mate preferences are known to be related to a number of morphological traits. Those relating to female waist-to-hip ratio or body mass index and to male height appear to be distinctive mate-choice criteria and are known to be related to reproductive success. In addition to absolute height, a possibly important mate-choice criterion may be relative height, i.e. the extent of sexual dimorphism in stature (SDS = male height/female height) between oneself and a potential partner. Here, I demonstrate that people adjust their preferences for SDS in relation to their own height in order to increase the potential pool of partners. This causes nonlinearity in assortative mating in relation to height and shows that in relation to intrapopulational SDS both men and women are responsible for stabilizing selection.

Adult↗
PubMed1975

The behavioural final common path.

In this paper it is argued that any model of the motivational (i.e. reversible) processes governing the behaviour of an animal can be represented by means of isoclines in a multidimensional 'causal-factor space'. The argument is axiomatic, based upon the two prime assumptions: that (1) it is always possible to classify the behavioural repertoire of a species in such a way that the classes are mutually exclusive in the sense that the members of different classes cannot occur simultaneously, and (2) these incompatible actions are uniquely determined by a particular set of causal factors. The isoclines join all points in the space which present a given 'degree of competitiveness' of a particular 'candidate' for overt behavioural expression. The competition between candidates is an inevitable consequence of the fact that animals cannot 'do more than one thing at a time', and is envisaged as taking place in the behavioural final common path. An empirical method of determining the motivational state (i.e. point in causal-factor space) is outlined. This is a 'relative' method, independent of the arbitrary calibration of the axes of the causal-factor space. It is shown that an arbitrary scale of measurement along any two axes of the causal-factor space is all that is necessary for empirical determination of the shape of a motivational isocline. Experiments in which this method has been applied to the measurement of hunger and thirst in doves are outlined, and the results are discussed in terms of their implications for motivation theory in general.

Animals↗
PubMed2002

Being known, intimate, and valued: global self-verification and dyadic adjustment in couples and roommates.

We contend that close relationships provide adults with optimal opportunities for personal growth when relationship partners provide accurate, honest feedback. Accordingly, it was predicted that young adults would experience the relationship quality with relationship partners who evaluated them in a manner consistent their own self-evaluations. Three empirical tests of this self-verification hypothesis as applied to close dyads were conducted. In Study 1, young adults in dating relationships were most intimate with and somewhat more committed to partners when they perceived that partners evaluated them as they evaluated themselves. Self-verification effects were pronounced for those involved in more serious dating relationships. In Study 2, men reported the greatest esteem for same-sex roommates who evaluated them in a self-verifying manner. Results from Study 2 were replicated and extended to both male and female roommate dyads in Study 3. Further, self-verification effects were most pronounced for young adults with high emotional empathy. Results suggest that self-verification theory is useful for understanding dyadic adjustment across a variety of relational contexts in young adulthood. Implications of self-verification processes for adult personal development are outlined within an identity negotiation framework.

Adult↗
PubMed2002

The Michelangelo phenomenon and personal well-being.

Previous research has demonstrated that when a close romantic partner views you and behaves toward you in a manner that is congruent with your ideal self, you experience movement toward your ideal self (termed the "Michelangelo phenomenon"; Drigotas, Rusbult, Wieselquist, & Whitton, 1999). The present research represents an attempt demonstrate the phenomenon's link to personal well-being. Results of a cross-sectional study of individuals in dating relationships, with a 2-month follow-up assessing breakup, replicated previous findings regarding relationship well-being and revealed strong links between the model and personal well-being, even when accounting for level of relationship satisfaction. Such results provide further evidence for the social construction of the self and personal well-being.

Adaptation, Psychological↗
PubMed2002

Trait-specific dependence in romantic relationships.

Informed by three theoretical frameworks--trait psychology, evolutionary psychology, and interdependence theory--we report four investigations designed to develop and test the reliability and validity of a new construct and accompanying multiscale inventory, the Trait-Specific Dependence Inventory (TSDI). The TSDI assesses comparisons between present and alternative romantic partners on major dimensions of mate value. In Study 1, principal components analyses revealed that the provisional pool of theory-generated TSDI items were represented by six factors: Agreeable/Committed, Resource Accruing Potential, Physical Prowess, Emotional Stability, Surgency, and Physical Attractiveness. In Study 2, confirmatory factor analysis replicated these results on a different sample and tested how well different structural models fit the data. Study 3 provided evidence for the convergent and discriminant validity of the six TSDI scales by correlating each one with a matched personality trait scale that did not explicitly incorporate comparisons between partners. Study 4 provided further validation evidence, revealing that the six TSDI scales successfully predicted three relationship outcome measures--love, time investment, and anger/upset--above and beyond matched sets of traditional personality trait measures. These results suggest that the TSDI is a reliable, valid, and unique construct that represents a new trait-specific method of assessing dependence in romantic relationships. The construct of trait-specific dependence is introduced and linked with other theories of mate value.

Adult↗