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One's sibling is one's '''brother or sister''', respectively meaning a male or female with whom one shares at least one Parent . This is usually taken to mean that the two people are Genetically Very Close , though it is not always necessarily the case, for example one or more siblings may have been Adopted by their parents.

In most societies throughout the world, siblings will usually grow up together and spend a good deal of their time during childhood together. This closeness may be marked with the development of strong emotional associations such as . The sibling bond is often complicated and is influenced by factors such as Parent al treatment, Birth Order , Personality , and people and experiences outside the Family . 1


TYPES OF SIBLINGS


Full sibling

A full sibling ('''full brother''' or '''full sister'''), is a sibling that shares both biological or adoptive parents. In law, the terms '''brother German''' and '''sister German''' are used.


Half sibling

A half sibling ('''half brother''' or '''half sister''') is a sibling with one shared biological or adoptive Parent . A half sibling that shares the same Mother (but different Father s) is known as a '''uterine''' sibling, whereas one that shares the same father is known as an '''agnate''' sibling. In law the term '''consanguine''' is used in place of agnate. Half siblings can have a wide variety of interpersonal relationships, from a bond as close as any full siblings, to total strangers. For half siblings in twins, see Semi-identical Twin .

Any half sibling of a person was traditionally treated just the same as a regular sibling for all purposes. At law (and especially Inheritance law), however, half siblings were often accorded unequal treatment. Old English Common Law at one time incorporated such inequalities into the laws of Intestate Succession , with half siblings taking only half as much property. Unequal treatment of this type has been almost wholly abolished in England and throughout much of the United States . A very small minority of states in the US, on the other hand, have retained some of these distinctions in their Inheritance law. In Oklahoma , for example, "half blood" siblings are not permitted to inherit property through Intestate Succession which descends from the family whose "blood" (family line) they do not share.2 In Texas , similarly, "half blood relatives can only inherit half as much property through intestate succession as relatives who are wholly related to the person who dies."3. For example, suppose there are three people with a common father but two different mothers. The father's intestate inheritance would be split equally between all three; the two mothers' intestate inheritances would each be shared only by her blood children; if one of the two full siblings dies intestate, the half-sibling receives half the share of the surviving full sibling.
See also half-siblings



Stepsibling

A stepsibling ('''stepbrother''' or '''stepsister''') is a sibling with whom an individual bears no blood or equivalent adoptive relation, and is related by the marriage or relationship of one parent of the individual to one parent of the sibling.

See Also: stepfamily




Siblings through breast feeding

''Milk brothers'' or milk sisters are children Breastfed by a woman other than their biological mother, a practice known as Wetnursing and once widespread.

In Islam those who are fed in this way become siblings to the biological children of their wetnurse, provided that they are less than two years old and have been breastfed five times or more by her. According to '' Shariah '' (Islamic law) these siblings are '' Mahram '', meaning that they are not allowed to marry each other.


BIRTH ORDER

See Also: Birth order


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Birth order is a person's rank by age among his or her siblings. Typically, researchers classify siblings as “eldest”, “middle child”, and “youngest” or simply distinguish between “firstborn” and “later born” children.

Birth order is commonly believed in suggests that birth order effects may exist within the context of the family of origin, but that they are not enduring aspects of personality. Harris, J. R. (1998). ''The nurture assumption: Why children turn out the way they do.'' New York: Free Press.

Some research has found that firstborn children have slightly higher IQ s on average than later born children.
4 However, other research finds no such effect. Rodgers, J. L., Cleveland, H. H., van den Oord, E. and Rowe, D. (2000). Resolving the Debate Over Birth Order, Family Size and Intelligence. ''American Psychologist'', ''Vol. 55''.

In practice, systematic birth order research is a challenge because it is difficult to control for all of the variables that are statistically related to birth order. For example, large families are generally lower in socioeconomic status than small families, so third born children are more likely than firstborn children to come from poorer families. Spacing of children, parenting style, and gender are additional variables to consider.


REGRESSIVE BEHAVIOR AT THE BIRTH OF A NEW SIBLING

The arrival of a new baby is especially stressful for firstborns and for siblings between 3 and 5 years old. Regressive behavior and aggressive behavior, such as handling the baby roughly, can also occur. All of these symptoms are considered to be typical and developmentally appropriate for children between the ages of 3-5. While some can be prevented, the remainder can be improved within a few months. Regressive behavior may include demand for a bottle, thumb sucking, requests to wear diapers (even if toilet-trained), or requests to carry a Security Blanket .

Regressive behaviors are the child’s way of demanding the parents’ love and attention.
Parents can deal with these behaviors by explaining to the older child their new sibling role, making this role sound exciting, answering questions about the baby and the process of birth (as appropriate), or reserving time each day just for the parent and older child.

The AAP (American Academy of Pediatrics {Link without Title} ) suggests that instead of protesting or telling children to act their age, parents should simply grant their requests without becoming upset. The affected children will soon return to their normal routine when they realize that they now have just as important a place in the family as the new sibling. Most of the behaviors can be improved within a few months.

The University of Michigan Health System {Link without Title} advises that
most occurrences of regressive behavior are mild and to be expected; however, it recommends parents to contact a pediatrician or child psychologist if the older child tries to hurt the baby, if regressive behavior does not improve within 2 or 3 months, or if the parents have other questions or concerns.


SIBLING RIVALRY

See Also: Sibling rivalry


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Sibling rivalry is a type of competition or animosity among brothers and sisters. It appears to be particularly intense when children are very close in age and of the same gender. The Effects of Sibling Competition Syliva B. Rimm, Educational Assessment Service, 2002. Sibling rivalry can involve Aggression ; however, it is not the same as Sibling Abuse where one child victimizes another.

Sibling rivalry usually starts right after, or before, the arrival of the second child. While siblings will still love each other, it is not uncommon for them to bicker and be malicious to each other. New Baby Sibling University of Michigan Health System, June 2006 Children are sensitive from the age of one year to differences in parental treatment and by three years they have a sophisticated grasp of family rules and can evaluate themselves in relation to their siblings. Sibling rivalry often continues throughout childhood and can be very frustrating and stressful to parents. [http://www.med.umich.edu/1libr/yourchild/sibriv.htm Sibling Rivalry] University of Michigan Health System, October 2006 One study found that the age group 10 to 15 reported the highest level of competition between siblings [http://jrscience.wcp.muohio.edu/humannature01/FinalArticles/SiblingRivalryinDegreeand.html Sibling Rivalry in Degree and Dimensions Across the Lifespan] Annie McNerney and Joy Usner, 30 April 2001. Sibling rivalry can continue into adulthood and sibling relationships can change dramatically over the years. Approximately one-third of adults describe their relationship with siblings as rivalrous or distant. However, rivalry often lessens over time and at least 80 percent of siblings over age 60 enjoy close ties.

According to researchers, each child in a family competes to define who they are as individuals and want to show that they are separate from their siblings. Sibling rivalry increases when children feel they are getting unequal amounts of their parents’ attention, where there is stress in the parents’ and children’s lives, and where fighting is accepted by the family as a way to resolve conflicts. explain sibling rivalry in terms of Parental Investment and Kin Selection : a parent is inclined to spread resources equally among all children in the family, but a child wants most of the resources for him or herself.


THE WESTERMARCK EFFECT AND ITS OPPOSITE

Anthropologist .5

The opposite phenomenon, when relatives do fall in love, is known as Genetic Sexual Attraction . This can occur between siblings brought up apart from each other, for example, adoptees who are re-united in adulthood.


SEE ALSO




NOTES