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Template:BioiPsy Evolutionarily speaking, offspring have a greater bond to mothers than fathers; women are universally known to be the direct caregivers in a parent-offspring relationship, whereas males are seen as material resource providers or involved only with their own reproductive success. Women have the "maternal instinct" to aid, assist, embrace and invest in their offspring. Males are evolutionarily known to invest less due to paternal uncertainty and therefore seek as many sexual partners and seek for an increase of their genes amongst society. However, males also have a role in securing a connection with the offspring by taking part in making an offspring's decisions when involved in a household. The vast evolutionary differences between direct and indirect care provided by mothers and fathers, respectively, are therefore overlooked and both parents influence the life decisions of the offspring. Different parenting styles across cultures also influence the temperament of an offspring. Additionally, varying attachment styles can influence the development of an offspring, impacting their future choices on their own mates and parenting skills. Such parental influences lead to the theories of inclusive fitness as well as parental investment in illustrating the roots of parenting styles relayed upon offspring, such as to ensure the parents' reproductive success as well as their fitness through resources that which offspring obtain when making mating choices.
According to the Parental Investment Theory, mothers are inclined to provide optimal care for their offspring due to the certainty of a genetic relationship. In regards to this, polyandry is rare in most societies as women will not take more than one husband in order to ensure the father with knowledge of the child's paternity and assistance with future care of their child from the father. Brain circuitry also evolved to favor monogamous attachment around the same time that our ancestors developed upright bipedal abilities. The development of upright movement led to the development of females caring for their children by carrying infants in their arms instead of on their backs. Holding their infants in their arms led to greater bonds between mother and child. Upright bipedal abilities also developed stronger pairing-bonds between males and females as it became easier for males to protect just one female on the land instead of multiple females as they had done while living in trees. Natural selection favored males and females who had genes regulated towards forming pair-bonds because their young were more likely to survive, and brain circuitry gradually evolved to include attachment in parenting styles.
Women have adapted the ability to recognize infant facial expression of emotion, most especially negative emotion. This adaptation allows for the primary caretaker to develop a bond with their child leading to secure attachment during development. The "tend-and-befriend" hypothesis, which allows for the mother to care for and protect the child during detrimental situations, ensures offspring survival. Women are also able to create and maintain social networks that offer social protection for their offspring.
Grandmothers have evolved mechanisms that allow them to invest in their grandchildren. Menopause might be an adaptation for older women to invest in care of their offspring and their children's offspring. A desire to improve inclusive fitness allows grandmothers, especially maternal grandmothers, to invest the most since they are guaranteed that the child carries their genes. Aunts will also invest more than uncles. Specifically maternal aunts will invest more than paternal aunts.
Males have less investment in potential offspring and are inept in their nurturing skills due to a greater emphasis on genetic reproduction, because any children that their mate births may or may not be their own. This phenomenon is termed paternal insecurity. Research has shown that for this reason, fathers tend to invest more resources in children that look and smell like them. Studies have demonstrated that when an infant is first born, males will experience decreased testosterone levels, making them less likely to be abusive, to commit infidelity, or seek divorce. Increased levels of investment when a child is first born may be due to the fact that males want to protect their genes and assure the reproductive success of their offspring in order for their genes to be spread.
Human fathers are involved with their family life as social connections are beneficial and alleviate access to resources. Long term monogamous relationships between parental units are necessary for children's improved development. From an evolutionary perspective, the well-being of children during their development improves the probability of reproduction for the child, and therefore the continuation of the father's genes. Evolutionary perspectives do not see the behavior of father's who abandon their families, solely based on passing down genetic information, but also through a social perspective as father involvement is an adaptation that has been shaped by the environment and experiences. In the modern case of divorce, fathers may feel less obliged to care for their children if guardianship of the child or children is granted to the mother, leading men to feel as if they do not need to be involved in the upbringing of their child. Remarrying, entering new romantic relationships, and having children with other women may also lead to fathers detracting from their parental investment towards their first born children. Divorced men finding new reproductive partners overrides their parental investment, as they focus on spreading their genes as widely as possible.
Authoritarian, authoritative, permissive, or neglectful parenting influences the development of children's attachment styles and their adjustment ability in order to survive and reproduce. Authoritative parenting style is associated with the highest level of adjustment in children and is characterized by three factors. First, the parent makes age appropriate demands by insisting that the child behave in an appropriate intellectual and emotional manner. Second, the parent is rational and communicative by giving limits of appropriate behavior and communicating these underlying values to the child. Third, when the child is behaving according to the limits that are set, positive reinforcement and praise are used. Children whose parents raised them with authoritative style will have greater secure attachment leading them to be more successful in both romantic and social relationships.
Authoritarian parenting style is associated with moderately well-adjusted children. The parent lacks the communicative skills of an authoritative parent and does not convey value to the child or give proper attention when necessary. Children who were raised by parents who had authoritarian parenting skills may have greater tendency towards avoidant or insecure attachment issues. This leads them to experience decreased success in relationships and a decreased chance of reproduction.
There are two types of permissive parenting styles; indulgent and neglectful. Indulgent parents do not create proper boundaries for their children and provide them with positive reinforcement even though it is not applicable. Neglectful parents create no boundaries for their child and ignore their needs. Both indulgent and neglectful parenting styles can lead children to develop insecure attachment issues as they may feel that they cannot trust those who are around them to be loyal.
Patterns of AttachmentEdit
The ancestral past developed bonding styles amongst a parent (specifically mothers) and their offspring. Secure attachment styles are crucial to help parent-child relationships and for the future survival of the child. It is strongly associated with strong future adult relationships.
Attachment styles reflect child rearing environments and are adaptively patterned. Trade-offs between current and future reproduction influence attachment styles. When resources cant be counted on, efforts can be focused on increasing fertility and decrease investment in any particular offspring.
Secure, avoidant and anxious ambivalent attachment make up the different styles of attachment theory. Secure attachment involves the child eliciting the most parental investment to ensure survival. Children with avoidant attachment, demonstrate an indifference towards the parent. This reflects an adaptation to a parents unwillingness to invest consistently in the child. With anxious, ambivalent attachment the child shows nervousness, fearfulness and insecurity. This reflects an adaptation to a parent who does not invest in the survival of offspring, they are preoccupied with other issues. This type of attachment in particular evolved to foster a "helpers at the nest" style. In this style of attachment the children remain at home and help their parents and other children.
Influence on Offspring in Mate SelectionEdit
Mating adaptations, such as competition for females, can be rooted in evolution, due to them being receivers of "scarce reproductive resources". Therefore, males nature to involve themselves in competition can be traced to their desire to have genes passed down while using the females resources. The parent who willfully invests in their offspring, is then in control of an offspring's mating choices, specifically those of their daughters. According to Robert Triver's theory of parental investment, the parent which commits to greater investment in an offspring will have greater investment in the mate choices of their children, in order to assure that their engaged parenting will not be wasted on a mate who will not lead to successful reproduction and a loss of their genes being passed down.
Parents play a significant role in determining the offspring's future mates, with greater influence on daughters.
In the ancestral environment, parents of young women recognized the power they possessed in assisting the selection of their daughter's mate and utilizing that power (either as main resource provider or through physical intimidation) to benefit and enhance their own inclusive fitness. Not only do parents have an influence on their offspring's mating choices, they also have an influence on the sexual strategies they adopt.
According to David Buss, a father's absence in early childhood directly affects the sexual strategy that a person will adopt later on. Those who experience a lack of a fatherly role during development, may develop insecure attachment expectations that parental resources are not reliable and develop the idea that adult pair bonds do not last, leading them to develop sexual strategies that involve: early sexual maturation, early sexual initiation, and frequent partner switching. Those who grew up with the presence of a father or fatherly role in their life, have greater secure attachment and view people as reliable and trustworthy. They believe that relationships are expected to last, therefore developing a long-term mating strategy. These people delay in sexual maturation, later onset of sexual activity, search for securely attached long-term adult relationships, and heavy investment in a small number of children.
- ↑ Gilding, Michael, "Paternity uncertainty and evolutionary psychology: How a seemingly capricious occurrence fails to follow laws of greater generality", Sociology, pages 140-157
- ↑ Sturge-Apply, Davies, Martin, Cicchetti and Hentges, "An Examination of the Impact of Harsh Parenting Contexts on Children's Adaptation Within an Evolutionary Framework", "Developmental Psychology", pages 791-805
- ↑ 3.0 3.1 3.2 Fisher, Helen, "Lust, Attraction, Attachment", "Journal of Sex Education and Therapy", pages 96-104
- ↑ 4.0 4.1 4.2 4.3 Buss, David, "Evolutionary Psychology: The New Science of the Mind", 2011, pages 204-265
- ↑ http://www.newscientist.com/article/dn17285-looking-like-daddy-has-material-rewards.html
- ↑ Grych, John, "On the Origins of Fathering: Implications for an Evolutionary Perspective for Understanding Links Among Marriage, Divorce and Men's Parenting", Parenting: Science and Practice, 2001, pages 67-70
- ↑ Berger, Kathleen, "Development Person Through Life Span", 2011
- ↑ Hughes, David, "Attachment-focused Parenting: Effective Strategies to Care For Children", 2009
- ↑ 9.0 9.1 9.2 Apostolou, Menelaos, "Sexual Selection Under Parental Choice", "Evolution and Human Behavior", pages 403-409
- ↑ Dubbs, S., Buunk, A.P., "Sex Differences in Paternal Preferences Over a Child's Mate Choice: A Daughter's Perspective", Journal of Social and Personal Relationships, 2010, pages 1051-1059
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