Optimal climbing speed explains the evolution of extreme sexual
... intermediate-sized males were favoured (Vollrath, 1980) and even large males had an advantage (Foellmer & Fairbairn, 2005). Brandt & Andrade (2007a) questioned the validity of the model underlying the GH; however, the alternative model they presented has since been shown to be flawed and unable to d ...
... intermediate-sized males were favoured (Vollrath, 1980) and even large males had an advantage (Foellmer & Fairbairn, 2005). Brandt & Andrade (2007a) questioned the validity of the model underlying the GH; however, the alternative model they presented has since been shown to be flawed and unable to d ...
Benefit or burden? - April Bleske
... ‘‘Friendship’’ can be defined both by what it is and what it is not (Hartup, 1975; Hays, 1988; Wright, 1984). It is a voluntary, cooperative personal relationship involving varying degrees of companionship, intimacy, affection, and mutual assistance. It is typically not defined by a social category ...
... ‘‘Friendship’’ can be defined both by what it is and what it is not (Hartup, 1975; Hays, 1988; Wright, 1984). It is a voluntary, cooperative personal relationship involving varying degrees of companionship, intimacy, affection, and mutual assistance. It is typically not defined by a social category ...
The relative importance of size and asymmetry in sexual selection
... background. An inability to cope with environmental and genetic perturbations is reflected in elevated levels of fluctuating asymmetry and other measures of developmental instability. Both trait size and symmetry have been implicated as playing an important role in sexual selection, although their r ...
... background. An inability to cope with environmental and genetic perturbations is reflected in elevated levels of fluctuating asymmetry and other measures of developmental instability. Both trait size and symmetry have been implicated as playing an important role in sexual selection, although their r ...
Full Text PDF
... dress (head covering), beyond those to which they adhered before. Samet (2005) focuses on another problem of education for tzniut for young women in religious-Zionist sex-education: boys’ desire and sexual impulses are well-defined and discussed (whereby, boys are restricted in self-arousal as well ...
... dress (head covering), beyond those to which they adhered before. Samet (2005) focuses on another problem of education for tzniut for young women in religious-Zionist sex-education: boys’ desire and sexual impulses are well-defined and discussed (whereby, boys are restricted in self-arousal as well ...
“I still haven`t found what I`m looking for”: The contribution of media
... problems arise, having shorter relationships when initial satisfaction is low, and longer relationships when initial satisfaction is high (Knee, 1998). In contrast, Knee et al. (2001) have shown that people who believe that successful relationships are cultivated and evolve over time exhibit more re ...
... problems arise, having shorter relationships when initial satisfaction is low, and longer relationships when initial satisfaction is high (Knee, 1998). In contrast, Knee et al. (2001) have shown that people who believe that successful relationships are cultivated and evolve over time exhibit more re ...
Untitled - King`s College London
... markets. These changes dramatically increase the economic and emotional costs of reproduction, and lead women, especially middle class women, to delay childbearing or avoid it altogether. The wide dissemination of feminist-influenced civil society also means that state exhortations to have more chil ...
... markets. These changes dramatically increase the economic and emotional costs of reproduction, and lead women, especially middle class women, to delay childbearing or avoid it altogether. The wide dissemination of feminist-influenced civil society also means that state exhortations to have more chil ...
Male Infertility and Sexual Health in Early Modern England
... their bodies. Olwen Hufton argued in A History of Women in Western Europe that ‘in all European societies the blame for a failure to produce offspring was, almost without exception, laid at the feet of the woman’.10 This trend also suggests that historians have been influenced by the nature of the s ...
... their bodies. Olwen Hufton argued in A History of Women in Western Europe that ‘in all European societies the blame for a failure to produce offspring was, almost without exception, laid at the feet of the woman’.10 This trend also suggests that historians have been influenced by the nature of the s ...
Repeatability: Its role in evolutionary studies of mating behavior
... a male's signal is to deviate from the mean of the females' preferences (discussed later), the less likely he is to mate. Both the mean value of the signal that a male produces and the variance around that mean will influence his mating success. The question of repeatability of mating signals is sim ...
... a male's signal is to deviate from the mean of the females' preferences (discussed later), the less likely he is to mate. Both the mean value of the signal that a male produces and the variance around that mean will influence his mating success. The question of repeatability of mating signals is sim ...
social selection, sexual selection and ecological competition
... ornamental traits have been favoured by sexual selection in males, but not in females. One proposed solution has been to broaden the scope of sexual selection to include ‘all selection processes operating through intrasexual competition for breeding opportunities in either sex’ [3]. There are, howev ...
... ornamental traits have been favoured by sexual selection in males, but not in females. One proposed solution has been to broaden the scope of sexual selection to include ‘all selection processes operating through intrasexual competition for breeding opportunities in either sex’ [3]. There are, howev ...
individual and collective vulnerability and std/hiv
... In Africa, the condition may be the result of multiple infections under conditions of poor nutrition due to poverty. It may not be a mere coincidence that AIDS is exacting its toll in the era of structural adjustments in Africa. It is notable that more serious strains of diseases thought to have bee ...
... In Africa, the condition may be the result of multiple infections under conditions of poor nutrition due to poverty. It may not be a mere coincidence that AIDS is exacting its toll in the era of structural adjustments in Africa. It is notable that more serious strains of diseases thought to have bee ...
Love is a dangerous thing - South African Medical Research Council
... your life, but after that they disappoint you by having sex with another guy'. At times, love was perceived to act as a disease, which would “work into” a heart and destroy it1: as one girl whose boyfriend had another partner said, 'I don't want that thing to work into my heart because it will spoil ...
... your life, but after that they disappoint you by having sex with another guy'. At times, love was perceived to act as a disease, which would “work into” a heart and destroy it1: as one girl whose boyfriend had another partner said, 'I don't want that thing to work into my heart because it will spoil ...
mating-induced reversed role of sex pheromone in an insect
... odour alone in virgin and newly mated males. Males were tested in wind tunnel experiments with a linden flower extract (Fig.1). There was no statistical difference in the response levels of virgin (grey dot at 0ng of pheromone in Fig.1A) and mated (grey dot at 0ng of pheromone in Fig.1B) males ...
... odour alone in virgin and newly mated males. Males were tested in wind tunnel experiments with a linden flower extract (Fig.1). There was no statistical difference in the response levels of virgin (grey dot at 0ng of pheromone in Fig.1A) and mated (grey dot at 0ng of pheromone in Fig.1B) males ...
CHARACTERISTICS OF THE MALE GAZER
... The second component of gaze includes attitudes towards this gazing behavior. This involves both the attitude of the individual involved in gaze behavior (i.e., observer) as well as the target’s (i.e., observed) perceived attitudes. For the observer, their motivation for doing so has been linked to ...
... The second component of gaze includes attitudes towards this gazing behavior. This involves both the attitude of the individual involved in gaze behavior (i.e., observer) as well as the target’s (i.e., observed) perceived attitudes. For the observer, their motivation for doing so has been linked to ...
Intralocus sexual conflict in hermaphroditic animals
... important contributor to mating rate) may be correlated and antagonistically selected between ...
... important contributor to mating rate) may be correlated and antagonistically selected between ...
Intralocus sexual conflict in hermaphroditic animals
... important contributor to mating rate) may be correlated and antagonistically selected between ...
... important contributor to mating rate) may be correlated and antagonistically selected between ...
An evolutionary behaviorist - Portsmouth Research Portal
... of conditions could be making a more costly error: being motivated to engage in behavior that is unlikely to result in the optimal reproductive outcome of conceiving with a genetically fit male who is free of disease (Miller, 2000). Thus, it is useful to consider what kinds of sexual activity evolut ...
... of conditions could be making a more costly error: being motivated to engage in behavior that is unlikely to result in the optimal reproductive outcome of conceiving with a genetically fit male who is free of disease (Miller, 2000). Thus, it is useful to consider what kinds of sexual activity evolut ...
Beyond the Pleistocene: Using Phylogeny and
... psychologists would agree in principle that human mating psychology was fashioned by many divergent selection pressures operating within and beyond the Pleistocene epoch, the specific timing of events is a critical component of evolutionary constraint and therefore is essential for reaching a comple ...
... psychologists would agree in principle that human mating psychology was fashioned by many divergent selection pressures operating within and beyond the Pleistocene epoch, the specific timing of events is a critical component of evolutionary constraint and therefore is essential for reaching a comple ...
purging the genome with sexual selection: reducing
... adapted males the greatest number of offspring.” Later, Darwin wrote at greater length about sexual selection in The Descent of Man (1871). Starting a strong tradition that continues to this day, he recognized that the curious features of organisms that are only explained by sexual selection—such as ...
... adapted males the greatest number of offspring.” Later, Darwin wrote at greater length about sexual selection in The Descent of Man (1871). Starting a strong tradition that continues to this day, he recognized that the curious features of organisms that are only explained by sexual selection—such as ...
Testing the prenatal androgen hypothesis: measuring
... two parts, each of which has 10 items. Three minutes were allowed to complete each part. Each item shows a paper being folded before a hole is punched through it. The participant selects one of five alternatives that represents the position of the holes in the paper after it has been unfolded. The s ...
... two parts, each of which has 10 items. Three minutes were allowed to complete each part. Each item shows a paper being folded before a hole is punched through it. The participant selects one of five alternatives that represents the position of the holes in the paper after it has been unfolded. The s ...
Pushing Boundaries: Female Sexuality From World War II to the
... camps across the country. Out of necessity, women began taking over previously maledominated positions, including working in factories, shipyards, and defense plants (Hegarty, 2008). Although women were making significant positive contributions to the war efforts, it was their sexuality that became ...
... camps across the country. Out of necessity, women began taking over previously maledominated positions, including working in factories, shipyards, and defense plants (Hegarty, 2008). Although women were making significant positive contributions to the war efforts, it was their sexuality that became ...
Persistence of the sexes in metapopulations under intense
... sexually and asexually (Bell 1982) provide a ground for understanding the adaptive significance of sex and the mechanisms retaining the sexes in populations (as Williams’s ‘balance’ argument emphasizes, the stable maintenance of sexual and asexual reproduction within a species implies that sex must ...
... sexually and asexually (Bell 1982) provide a ground for understanding the adaptive significance of sex and the mechanisms retaining the sexes in populations (as Williams’s ‘balance’ argument emphasizes, the stable maintenance of sexual and asexual reproduction within a species implies that sex must ...
Reprint
... coevolution may obscure the conflict itself. Second, competing models of inter-sexual coevolution may yield similar population patterns near equilibria. Third, a variety of evolutionary forces underlying competing models may be acting simultaneously near equilibria. One main conclusion is that studi ...
... coevolution may obscure the conflict itself. Second, competing models of inter-sexual coevolution may yield similar population patterns near equilibria. Third, a variety of evolutionary forces underlying competing models may be acting simultaneously near equilibria. One main conclusion is that studi ...
Determining the factors of intimate relationship satisfaction
... to measure emotions during a conflict. The Dyadic Adjustment Scale was chosen because it has been used to measure the satisfaction and adjustment of both married and unmarried couples, and because of its overall high reliability of .96. Twenty-eight items of the scale were used to assess overall rel ...
... to measure emotions during a conflict. The Dyadic Adjustment Scale was chosen because it has been used to measure the satisfaction and adjustment of both married and unmarried couples, and because of its overall high reliability of .96. Twenty-eight items of the scale were used to assess overall rel ...
ecological differentiation of combined and separate sexes of
... compensation). This prediction has been supported by a recent theoretical model, which further proposes that the sex with the lower total reproductive expenditure should be favored in poor environments (De Laguérie et al. 1993). Delph (1990b) showed that the seed fitness of female plants relative t ...
... compensation). This prediction has been supported by a recent theoretical model, which further proposes that the sex with the lower total reproductive expenditure should be favored in poor environments (De Laguérie et al. 1993). Delph (1990b) showed that the seed fitness of female plants relative t ...
The role of selection and gene flow in the evolution of sexual
... Conversely, gene flow between populations generally erodes the evolution of sexual isolation. In Timema cristinae walking stick insects, some sexual isolation between populations evolved through ecological divergence in hostplant use, implicating a role for natural selection. However, reinforcement ...
... Conversely, gene flow between populations generally erodes the evolution of sexual isolation. In Timema cristinae walking stick insects, some sexual isolation between populations evolved through ecological divergence in hostplant use, implicating a role for natural selection. However, reinforcement ...