Related Research Articles
Adoption is a process whereby a person assumes the parenting of another, usually a child, from that person's biological or legal parent or parents. Legal adoptions permanently transfer all rights and responsibilities, along with filiation, from the biological parents to the adoptive parents.
Nature versus nurture is a long-standing debate in biology and society about the relative influence on human beings of their genetic inheritance (nature) and the environmental conditions of their development (nurture). The alliterative expression "nature and nurture" in English has been in use since at least the Elizabethan period and goes back to medieval French. The complementary combination of the two concepts is an ancient concept. Nature is what people think of as pre-wiring and is influenced by genetic inheritance and other biological factors. Nurture is generally taken as the influence of external factors after conception e.g. the product of exposure, experience and learning on an individual.
A stepfamily is a family where at least one parent has children who are not biologically related to their spouse. Either parent, or both, may have children from previous relationships or marriages. Two known classifications for stepfamilies include "simple" stepfamilies, where only one member of the family's couple has a prior child or children and the couple does not have any children together, and "complex" or "blended" families, where both members of the couple have at least one child from another relationship.
A sibling is a relative that shares at least one parent with the other person. A male sibling is a brother, and a female sibling is a sister. A person with no siblings is an only child.
Human behaviour genetics is an interdisciplinary subfield of behaviour genetics that studies the role of genetic and environmental influences on human behaviour. Classically, human behavioural geneticists have studied the inheritance of behavioural traits. The field was originally focused on determining the importance of genetic influences on human behaviour. It has evolved to address more complex questions such as: how important are genetic and/or environmental influences on various human behavioural traits; to what extent do the same genetic and/or environmental influences impact the overlap between human behavioural traits; how do genetic and/or environmental influences on behaviour change across development; and what environmental factors moderate the importance of genetic effects on human behaviour. The field is interdisciplinary, and draws from genetics, psychology, and statistics. Most recently, the field has moved into the area of statistical genetics, with many behavioural geneticists also involved in efforts to identify the specific genes involved in human behaviour, and to understand how the effects associated with these genes changes across time, and in conjunction with the environment.
Closed adoption is a process by which an infant is adopted by another family, and the record of the biological parent(s) is kept sealed. Often, the biological father is not recorded—even on the original birth certificate. An adoption of an older child who already knows their biological parent(s) cannot be made closed or secret. This used to be the most traditional and popular type of adoption, peaking in the decades of the post-World War II Baby Scoop Era. It still exists today, but it exists alongside the practice of open adoption. The sealed records effectively prevent the adoptee and the biological parents from finding, or even knowing anything about each other. However, the emergence of non-profit organizations and private companies to assist individuals with their sealed records has been effective in helping people who want to connect with biological relatives to do so.
Joseph M. Horn was an American psychologist and geneticist known for his work on adoption studies.
The Minnesota Transracial Adoption Study examined the IQ test scores of 130 black or interracial children adopted by advantaged white families. The aim of the study was to determine the contribution of environmental and genetic factors to the poor performance of black children on IQ tests as compared to white children. The initial study was published in 1976 by Sandra Scarr and Richard A. Weinberg. A follow-up study was published in 1992 by Richard Weinberg, Sandra Scarr and Irwin D. Waldman. Another related study investigating social adjustment in a subsample of the adopted black children was published in 1996. The 1992 follow-up study found that "social environment maintains a dominant role in determining the average IQ level of black and interracial children and that both social and genetic variables contribute to individual variations among them." Both Levin and Lynn argued that these findings support a hereditarian alternative, while other researchers believed the findings were consistent with both genetic and environmental explanations.
More adoptions occur in California each year than any other state. There is domestic adoption, international adoption, step parent adoption and adult adoption.
Open adoption is a form of adoption in which the biological and adoptive families have access to varying degrees of each other's personal information and have an option of contact. While open adoption is a relatively new phenomenon in the west, it has been a traditional practice in many Asian societies, especially in South Asia, for many centuries. In Hindu society, for example, it is relatively common for a childless couple to adopt the second or later son of the husband's brother when the childless couple has limited hope of producing their own child.
Interracial adoption refers to the act of placing a child of one racial or ethnic group with adoptive parents of another racial or ethnic group.
In evolutionary psychology, the Cinderella effect describes the phenomenon of a higher incidence of child abuse and mistreatment by stepparents than biological parents. It takes its name from the fairy tale character Cinderella, a girl who is mistreated by her stepmother and stepsisters. Evolutionary psychologists describe this effect as being a byproduct of a bias towards biological family and a conflict between reproductive partners investing in young children that are unrelated to one partner.
Research on the heritability of IQ inquires into the degree of variation in IQ within a population that is due to genetic variation between individuals in that population. There has been significant controversy in the academic community about the heritability of IQ since research on the issue began in the late nineteenth century. Intelligence in the normal range is a polygenic trait, meaning that it is influenced by more than one gene, and in the case of intelligence at least 500 genes. Further, explaining the similarity in IQ of closely related persons requires careful study because environmental factors may be correlated with genetic factors.
Personality development encompasses the dynamic construction and deconstruction of integrative characteristics that distinguish an individual in terms of interpersonal behavioral traits. Personality development is ever-changing and subject to contextual factors and life-altering experiences. Personality development is also dimensional in description and subjective in nature. That is, personality development can be seen as a continuum varying in degrees of intensity and change. It is subjective in nature because its conceptualization is rooted in social norms of expected behavior, self-expression, and personal growth. The dominant viewpoint in personality psychology indicates that personality emerges early and continues to develop across one's lifespan. Adult personality traits are believed to have a basis in infant temperament, meaning that individual differences in disposition and behavior appear early in life, potentially before language of conscious self-representation develop. The Five Factor Model of personality maps onto the dimensions of childhood temperament. This suggests that individual differences in levels of the corresponding personality traits are present from young ages.
Genealogical bewilderment is a term referring to potential identity problems that could be experienced by a child who was either fostered, adopted, or conceived via an assisted reproductive technology procedure such as surrogacy or gamete donation.
Behavioural genetics, also referred to as behaviour genetics, is a field of scientific research that uses genetic methods to investigate the nature and origins of individual differences in behaviour. While the name "behavioural genetics" connotes a focus on genetic influences, the field broadly investigates the extent to which genetic and environmental factors influence individual differences, and the development of research designs that can remove the confounding of genes and environment. Behavioural genetics was founded as a scientific discipline by Francis Galton in the late 19th century, only to be discredited through association with eugenics movements before and during World War II. In the latter half of the 20th century, the field saw renewed prominence with research on inheritance of behaviour and mental illness in humans, as well as research on genetically informative model organisms through selective breeding and crosses. In the late 20th and early 21st centuries, technological advances in molecular genetics made it possible to measure and modify the genome directly. This led to major advances in model organism research and in human studies, leading to new scientific discoveries.
The following outline is provided as an overview of and topical guide to adoption:
Adoption studies typically compare pairs of persons, e.g., adopted child and adoptive mother or adopted child and biological mother, to assess genetic and environmental influences on behavior. These studies are one of the classic research methods of behavioral genetics. The method is used alongside twin studies to identify the roles of genetics and environmental variables that impact intelligence, and behavioral disorders.
Post-adoption depression is shown though symptoms of depression in the adoptive mother or father, generally seen from one month after adoption, and is experienced by anywhere from 10% to 32% of adoptive parents. The symptoms of post-adoption depression are common to symptoms of depression, and include changes in sleeping pattern and appetite, feelings of hopelessness, fatigue, problems with concentration and restlessness, as well as suicidal thoughts. These symptoms are also similar to those of postpartum depression, which is a related syndrome. Postpartum depression, however, involves hormonal changes in pregnant woman, which are not present in women suffering from post-adoption depression. Despite this difference, there are still significant changes that new parents go through, even when the child is not biologically their own. These changes can have significant impacts on mental health. Post-adoption depression can also negatively impact the child.
In adoption studies, selective placement refers to the practice by which adoption agencies tend to deliberately match certain characteristics of an adopted child's adopted parents with those of his or her biological parents. When this occurs, it results in a correlation between environments between biological relatives raised in different homes. It has the potential to bias the conclusions of such studies, because twins who were reared in separate environments may in fact have been reared in much more similar environments than assumed. This can result in an inflated estimate of heritability. There is evidence that selective placement was a major confound in many early studies of twins reared apart. Some adoption studies report little or no evidence of selective placement. For example, a 1979 study by Ho et al. reported a generally low level of selective placement in adopted children for either physical or behavioral traits. The authors concluded that to the extent that selective placement occurred for such traits, "our data suggest that it is based largely on characteristics of the birth father," rather than those of the adoptee. Carey (2003) concluded that selective placement was "moderate" for physical characteristics and typically "small or nonexistent" for behavioral characteristics.
References
- ↑ Hamilton, Laura (February 2007). "Adoptive Parents, Adaptive Parents: Evaluating the Importance of Biological Ties for Parental Investment" (PDF). American Sociological Review. 72: 95–116. doi:10.1177/000312240707200105. S2CID 145210023.
- ↑ Rhea SA, Bricker JB, Wadsworth SJ, Corley RP (February 2013). "The Colorado Adoption Project". Twin Res Hum Genet. 16 (1): 358–65. doi:10.1017/thg.2012.109. PMC 3817005 . PMID 23158098.
- ↑ Kenneth S. Kendler; Eric Turkheimer; Henrik Ohlsson; Jan Sundquiste & Kristina Sundquiste (2015). "Family environment and the malleability of cognitive ability: A Swedish national home-reared and adopted-away cosibling control study". Proceedings of the National Academy of Sciences. 112 (15): 4612–4617. Bibcode:2015PNAS..112.4612K. doi: 10.1073/pnas.1417106112 . PMC 4403216 . PMID 25831538.
- ↑ Segal, Nancy L., Norman P. Li, Jamie L. Graham, Steven A. Miller (September 2015). "Do parents favor their adoptive or biological children? Predictions from kin selection and compensatory models". Evolution and Human Behavior. 36 (5): 379–388. doi: 10.1016/j.evolhumbehav.2015.03.001 .
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Rosario Ceballo, Jennifer E. Lansford, Antonia Abbey and Abigail J. Stewart (January 2004). "Gaining a Child: Comparing the Experiences of Biological Parents, Adoptive Parents, and Stepparents". Family Relations. 53 (1). National Council on Family Relations: 38–48. doi:10.1111/j.1741-3729.2004.00007.x. JSTOR 3700236.
{{cite journal}}: CS1 maint: multiple names: authors list (link)
 | This parenting article is a stub. You can help Wikipedia by expanding it. |