Only child

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For the English musician, see Only Child (musician).

An only child is a person with no siblings, either biological or adopted.

In a family with multiple offspring, first-borns may be briefly considered only children and have a similar early family environment, but the term only child is generally applied only to those individuals who never have siblings. An only child, however, may have half-siblings or stepsiblings who come along considerably late (after they reach their teens) and still be considered an only child. Children with much older or younger siblings (generally ten or more years) may also have a similar family environment to only children.


Throughout history, only children were relatively uncommon. Over the 20th century in particular, birth rates and average family sizes fell sharply, for a number of reasons including increasing costs of raising children and more women's having their first child later in life. The proportion of families in the U.S. with only children increased during the Great Depression but fell during the Post–World War II baby boom.[1] After the Korean War ended in 1953, the South Korean government suggested citizens each have one or two children to boost economic prosperity, which resulted in significantly lowered birth rates and a larger number of only children to the country.[2][3]

Since 1979, the one-child policy in mainland China has restricted most parents to having only one child, although it is subject to local relaxations and individual circumstances.[4][5][6]

Families may have an only child for a variety of reasons, including: personal preference, family planning, financial and emotional or physical health issues, desire to travel, stress in the family, educational advantages, late marriage, stability, focus, time constraints, fears over pregnancy, advanced age, infertility, divorce, and death of a sibling or parent.

Only children are sometimes said to be more likely to develop precocious interests (from spending more time with adults) and to feel lonely.[1] Sometimes they compensate for the aloneness by developing a stronger relationship with themselves[7] or developing an active fantasy life that includes imaginary friends. Children whose only siblings are much older than them sometimes report feeling like an only child.[8] Advantages cited of having an only child are that there is no sibling rivalry and that it becomes possible to take the child to an event suitable for their age without having to bring along a disinterested sibling. A disadvantage is that it can be harder for an only child to singlehandedly look after his aging parents.[9]

Myths and stereotypes[edit]

In Western countries, only children are often the subject of a stereotype that equates them with "spoiled brats". G. Stanley Hall was one of the first commentators to give only children a bad reputation when he referred to their situation as "a disease in itself". Even today, only children are commonly stereotyped as "spoiled, selfish, and bratty".[10] While many only children receive a lot of attention and resources for their development, it is not clear that as a class they are overindulged or differ significantly from children with siblings.[11] Susan Newman, a social psychologist at Rutgers University and the author of Parenting an Only Child, says that this is a myth. "People articulate that only children are spoiled, they're aggressive, they're bossy, they're lonely, they're maladjusted", she said. "There have been hundreds and hundreds of research studies that show that only children are no different from their peers."[10] However, differences have been found. Research involving teacher ratings of U.S. children's social and interpersonal skills[12][13] has scored only children lower in self-control and interpersonal skills. While a later study failed to find evidence this continued through middle and high school,[14][15][16][17] a further study showed deficits persisted until at least the fifth grade.[18]

In China, perceived behavioral problems in only children has been called the Little Emperor Syndrome[19] and the lack of siblings has been blamed for a number of social ills such as materialism and crime. However, recent studies do not support these claims, and show no significant differences in personality between only children and children in larger families.[20] The one child policy has also been speculated to be the underlying cause of forced abortions, female infanticide, underreporting[21] of female births, and has been suggested as a possible cause behind China's increasing number of crimes and gender imbalance. Regardless, a 2008 survey given by the Pew Research Center reports that 76% of the Chinese population supports the policy.[22]

The popular media often posit that it is more difficult for only children to cooperate in a conventional family environment, as they have no competitors for the attention of their parents and other relatives. It is suggested that confusion arises about the norms of ages and roles and that a similar effect exists in understanding during relationships with other peers and youth, all throughout life.[23] Furthermore, it is suggested that many feel that their parents place extra pressure and expectations on the only child, and that often, only children are perfectionists.[24] Only children are noted to have a tendency to mature faster.[25]

Scientific research[edit]

A 1987 quantitative review[26] of 141 studies on 16 different personality traits failed to support the opinion, held by theorists including Alfred Adler, that only children are more likely to be maladjusted due to pampering.[27] The study found no evidence of any greater prevalence of maladjustment in only children. The only statistically significant difference discovered was that only children possessed a higher achievement motivation, which Polit and Falbo attributed to their greater share of parental resources, expectations, and scrutiny exposing them to a greater degree of reward, and greater likelihood of punishment for falling short. A second analysis by the authors revealed that only children, children with only one sibling, and first-borns in general, score higher on tests of verbal ability than later-borns and children with multiple siblings.[28]

According to the Resource Dilution Model,[29] parental resources (e.g. time to read to the child) are important in development. Because these resources are finite, children with many siblings are thought to receive fewer resources. However, the Confluence Model[30] suggests there is an opposing effect from the benefits to the non-youngest children of tutoring younger siblings, though being tutored does not make up the reduced share of parental resources. This provides one explanation for the poorer performance on tests of ability of only children compared to first-borns, commonly seen in the literature,[30][31] though explanations such as the increased and earlier likelihood of experiencing parental separation or loss for last-born and only children have also been suggested, as this may be the cause of their very status.[31]

In his book Maybe One,[32] the environmental campaigner Bill McKibben argues in favor of a voluntary one child policy on the grounds of climate change and overpopulation. He reassures the reader with a narrative constructed from interviews with researchers and writers on only children, combined with snippets from the research literature, that this would not be harmful to child development. He argues that most cultural stereotypes are false, that there are not many differences between only children and other children, and where there are differences, they are favorable to the only child.

Most research on only children has been quantitative and focused on the behaviour of only-children and on how others, for example teachers, assess that behaviour. Bernice Sorensen, in contrast, used qualitative methods in order to elicit meaning and to discover what only-children themselves understand, feel or sense about their lives that are lived without siblings. Her research showed that during their life span only children often become more aware of their only child status and are very much affected by society's stereotype of the only-child whether or not the stereotype is true or false. She argues in her book, Only Child Experience and Adulthood, that growing up in a predominantly sibling society affects only children and that their lack of sibling relationships can have an important effect on both the way they see themselves and others and how they interact with the world.[33]

The latest research by Cameron et al. (2011) controls for endogeneity associated with being only children. Parents that choose to have only one child could differ systematically in their characteristics from parents who choose to have more than one child. The paper concludes that "those who grew up as only children as a consequence of the (one-child) policy (in China) are found to be less trusting, less trustworthy, less likely to take risks, and less competitive than if they had had siblings. They are also less optimistic, less conscientious, and more prone to neuroticism".[34]

In his book Born to Rebel, Frank Sulloway provides evidence that birth order influences the development of the "big five personality traits" (also known as the Five Factor Model). Sulloway suggests that firstborns and only children are more conscientious, more socially dominant, less agreeable, and less open to new ideas compared to laterborns.[35] However, his conclusions have been challenged by other researchers,[36] who argue that birth order effects are weak and inconsistent. In one of the largest studies conducted on the effect of birth order on the Big Five, data from a national sample of 9,664 subjects found no association between birth order and scores on the NEO PI-R personality test.[37]

See also[edit]


  1. ^ a b "The Onlies". New York Magazine. May 21, 2005. Retrieved February 9, 2010.
  2. ^ "Korean Women Say Birth Control is ‘Men’s Responsibility’". September 27, 2008. Retrieved December 25, 2010.
  3. ^ "Illegal abortion, South Korea's open secret". Reuters. January 27, 2009. Retrieved December 25, 2010.
  4. ^ Rocha da Silva, Pascal (2006). "La politique de l'enfant unique en République populaire de Chine" ("The politics of one child in the People's Republic of China"). Université de Genève (University of Geneva). p. 22-8. (French)
  5. ^ "Marriage of the Only Child: Joys and Worries". July 4, 2003. Retrieved January 15, 2011.
  6. ^ "China's One-Child Policy". Time. July 27, 2009. Retrieved January 15, 2011.
  7. ^ Sandler, Lauren (8 June 2013). "Only Children: Lonely and Selfish?". The New York Times. 
  8. ^ Bradford, Kelly Rose (5 April 2014). "I wish my son wasn't an only child". The Guardian. 
  9. ^ Edge, Simon (28 March 2013). "The rise of the only child: Happier, higher achievers or just more lonely?". Express. 
  10. ^ a b The Only Child Myth, By Juju Chang and Sara Holmberg, ABC News, Retrieved on August 25th, 2008.
  11. ^ "The Only Child: Debunking the Myths". Time. July 8, 2010. Retrieved July 9, 2010.
  12. ^ Downey, Douglas B. & Condron, Dennis J. (2004), "Playing Well with Others in Kindergarten: The Benefit of Siblings at Home", Journal of Marriage and Family 66 (2): 333–350, doi:10.1111/j.1741-3737.2004.00024.x 
  13. ^ "So is an only child really happier?". Mirror. November 30, 2010. Retrieved November 30, 2010.
  14. ^ Bobbitt-Zeher, Donna & Downey, Douglas B. (2013), "Number of Siblings and Friendship Nominations Among Adolescents", Journal of Family Issues 34 (9): 1175–1193, doi:10.1177/0192513X12470370 
  15. ^; "Only Children Turn Out Just Fine", August 19, 2010. Retrieved December 25, 2010.
  16. ^ "ONLY CHILD SYNDROME A MYTH". DiscoveryNews. August 16, 2010. Retrieved December 25, 2010.
  17. ^ "An only child 'is NOT a more lonely teenager', scientists claim". Daily Mail. August 16, 2010. Retrieved November 30, 2010.
  18. ^ Downey, Douglas B.; Condron, Dennis J. & Yucel, Deniz (2015), "Number of Siblings and Social Skills Revisited Among American Fifth Graders", Journal of Family Issues 36 (2): 273–296, doi:10.1177/0192513X13507569 
  19. ^ "The Rise Of The Only Child". Newsweek. April 23, 2001. Retrieved December 25, 2010.
  20. ^ Wan, et al. "Comparison of personality traits of only and sibling school children in Beijing." Journal of Genetic Psychology 155.4: 377(12).
  21. ^ For studies that reported underreporting or delayed reporting of female births, see the following:
    • M. G. Merli and A. E. Raftery. 1990. "Are births under-reported in rural China? Manipulation of statistical records in response to China's population policies", Demography 37 (February): 109-126
    • Johansson, Sten; Nygren, Olga (1991). "The missing girls of China: a new demographic account". Population and Development Review (Population Council) 17 (1): 35–51. doi:10.2307/1972351. JSTOR 1972351. 
    • Merli, M. Giovanna; Raftery, Adrian E. (2000). "Are births underreported in rural China?". Demography 37 (1): 109 126. doi:10.2307/2648100. PMID 10748993. 
  22. ^ "The Chinese Celebrate Their Roaring Economy, As They Struggle With Its Costs". 2008-07-22. Retrieved 2009-07-31. 
  23. ^ "10 Tips for Parenting Only Children". Parents. October 2008. Retrieved May 26, 2010.
  24. ^ "Surviving (Your Child's) Adolescence". Psychology Today. July 19, 2009. Retrieved May 26, 2010.
  25. ^ "Raising an Only Child". Parents.
  26. ^ Polit, D. F. & Falbo, T. (1987), "Only children and personality development: A quantitative review", Journal of Marriage and the Family 49: 309–325, doi:10.2307/352302 .
  27. ^ Adler, A. (1964). Problems of neurosis. New York: Harper and Row.
  28. ^ Polit, D. F. & Falbo, T. (1988), "The intellectual achievement of only children", Journal of Biosocial Science 20: 275–285, doi:10.1017/S0021932000006611, PMID 3063715 .
  29. ^ Downey, D. B. (2001), "Number of siblings and intellectual development: The resource dilution explanation", American Psychologist 56: 497–504, doi:10.1037/0003-066X.56.6-7.497 .
  30. ^ a b Zajonc, R. B.; Markus, Gregory B. (1975), "Birth Order and Intellectual Development", Psychological Review 82 (1): 74–88, doi:10.1037/h0076229 .
  31. ^ a b Falbo, Toni (1978), "Sibling Tutoring and Other Explanations for Intelligence Discontinuities of Only and Last Borns", Journal of Population 1 (4): 349–363, doi:10.2307/27507586 .
  32. ^ McKibben, B. (1998), Maybe one: A personal and environmental argument for single-child families, New York: Simon & Schuster, ISBN 0-684-85281-0 .
  33. ^ Sorensen, B. (2008), Only Child Experience and Adulthood, Hampshire: Palgrave MacMillan, pp. 164–195, ISBN 0-230-52101-0 .
  34. ^ Cameron, Lisa; Erkal, N.; Gangadharan, L. & Meng, Xin (2011), Little Emperors—Behavioral Impacts of China’s One-Child Policy (University of Melbourne) .
  35. ^ Sulloway, F. J. (1996), Born to rebel: Birth order, family dynamics and creative lives, New York: Pantheon Books, ISBN 0-679-44232-4 .
  36. ^ Harris, J. R. (2006), No two alike: Human nature and human individuality, New York: WW Norton & Company, ISBN 0-393-05948-0 .
  37. ^ Jefferson, T.; Herbst, J. H. & McCrae, R. R. (1998), "Associations between birth order and personality traits: Evidence from self-reports and observer ratings", Journal of Research in Personality 32 (4): 498–509, doi:10.1006/jrpe.1998.2233 .