Developmental Stability, Ejaculate Size, and Sperm Quality in Men

Manning, John T.; Scutt, Diane; Lewis‐Jones, D. I.

doi:10.1016/s1090-5138(98)00024-5

Cited by 85 publications

(48 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, numerous studies indicate a negative relationship between FA and the quantity and quality of sperm in antelopes (Gomendio et al, 2000), insects (Farmer & Barnard, 2000), and humans (Manning, Scutt, & Lewis-Jones, 1998). Many other studies show female preferences for low FA in, for example, wings of male scorpion flies (Thornhill, 1992); tails of barn swallows (Møller, 1992); and eyespots of peacock tails (Petrie, Halliday & Sanders, 1991).…”

Section: Discussionmentioning

confidence: 99%

A Life-History Model of Human Fitness Indicators

Sefcek

Figueredo

2010

Biodemography and Social Biology

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

A Life-History Model of Human Fitness Indicators

Sefcek

Figueredo

2010

Biodemography and Social Biology

View full text Add to dashboard Cite

“…While the issue is divided, and there is some evidence that symmetry is not associated with quality (e.g., see [21]), many studies do show links between symmetry and quality [20,22]. For example, in humans, male body symmetry is positively related to sperm number per ejaculate and sperm speed [23] and female breast symmetry is positively correlated with fecundity [24,25]. Relating to faces, one study has demonstrated that facial asymmetry is positively related to self-reported number of occurrences of respiratory disease [26] and some studies have observed positive correlations between symmetry and other putative indices of underlying physical condition (e.g., exaggerated sex-typical characteristics, [27,28]).…”

Section: Open Accessmentioning

confidence: 99%

Domain Specificity in Human Symmetry Preferences: Symmetry is Most Pleasant When Looking at Human Faces

Little

2014

Symmetry

View full text Add to dashboard Cite

Visual symmetry has been found to be preferred to asymmetry in a variety of domains and across species. A number of theories propose to explain why symmetry is preferred. In this article, I compare a perceptual bias view, in which symmetry is preferred due to factors inherit to the visual system, and an evolutionary advantage view, in which symmetry is preferred due to selection pressures on partner preference. Preferences for symmetry in three stimulus types were determined by having symmetric and asymmetric versions of the same images rated for pleasantness: human female faces, macaque monkey faces, and abstract art. It was found that preferences for symmetry were strongest for human female faces and weakest for art. This finding builds on previous research suggesting that symmetry preferences for human faces are different from symmetry preferences in other domains and that simple perceptual bias explanations do not wholly explain human visual face symmetry preferences. While consistent with an evolutionary advantage view, these data are also potentially explainable via a perceptual bias view which accounts for experience of stimuli. The interplay between these two views is discussed in the context of the current study.

show abstract

“…So, symmetry is also associated with sperm quality. In a study of 53 men from a fertility clinic, men with higher symmetry in digits 2 to 5 were found to produce more sperm per ejaculate, have faster sperm, and have sperm that are better migrators [111]. Additionally, men with greater overall symmetry produce more sperm per ejaculate and have faster sperm [111].…”

Section: Sperm Qualitymentioning

confidence: 99%

“…In a study of 53 men from a fertility clinic, men with higher symmetry in digits 2 to 5 were found to produce more sperm per ejaculate, have faster sperm, and have sperm that are better migrators [111]. Additionally, men with greater overall symmetry produce more sperm per ejaculate and have faster sperm [111]. Similarly, in a study including 34 men not being treated for infertility, men with greater symmetry of the second digit, ears, wrists, and ankles were found to have more sperm per ejaculate than men with lower symmetry [112].…”

Section: Sperm Qualitymentioning

confidence: 99%

The Relationships between Symmetry and Attractiveness and Mating Relevant Decisions and Behavior: A Review

Wade¹

2010

Symmetry

View full text Add to dashboard Cite

Abstract:Evolutionary theory based research shows that attractiveness is based on biological correlates that index appropriate estrogen and testosterone levels. Symmetry affects or plays a role in the perception of many of these correlates of attractiveness. Additionally, since attractiveness affects infidelity perception and reactions, sexual satisfaction, and personality perception, symmetry also affects these areas. This paper reviews the literature on symmetry showing how symmetry affects: the correlates of attractiveness, sexual satisfaction, personality, and infidelity perceptions and reactions.

show abstract

Developmental Stability, Ejaculate Size, and Sperm Quality in Men

Cited by 85 publications

References 27 publications

A Life-History Model of Human Fitness Indicators

A Life-History Model of Human Fitness Indicators

Domain Specificity in Human Symmetry Preferences: Symmetry is Most Pleasant When Looking at Human Faces

The Relationships between Symmetry and Attractiveness and Mating Relevant Decisions and Behavior: A Review

Contact Info

Product

Resources

About