The mediating effect of parenting style on the relationship between first-born children’s temperament and psychological adaptation by Guoying Qian, Sijie Yang, Ruonan Li, Gang Dou

“…Abstract Chinese first-born children need to learn how to get along with their siblings after the implementation of the universal two-child policy in 2016. …”
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Predictions for Sex of First Born Child Reflect Masculine and Feminine Characteristics in Male and Female Undergraduates by Jaime L. Palmer-Hague, Samuele Zilioli, Neil V. Watson

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Motor development of first born compared to later born children in the first two years of life – A replication by Heinz Krombholz

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Effect of Birth Order on a Child's Personality by Mussarat Anwar, Ayesha Anwar, Neelam Chiragh

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Birth Order, Gender, and Naming Preferences in Contemporary Poland by Paweł Tomanek

“…The findings show that, on the whole, the first-born children received more popular and more traditional names than the second-borns. …”
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Speech Interaction in Triads «Mother—Dizygotic Twins» at the Age of the Children 4—6 Years by A.V. Kurazhova, E.E. Lyakso

“…When mothers interact with the second-born twins they stimulate them to communication more then the first-born twins.…”
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The Impact of Maternal Age and Educational Level on Developmental Dysplasia of the Hip Diagnosis and Screening: A Descriptive Comparative Study by Moh’d S. Dawod, Mohammad N. Alswerki, Amr Z. Abuqudiri, Ashraf A. Albadaineh, Leena M. Mahmoud, Dania J. Altarawneh, Nour H. Rbeihat, Rogayah M. Alkhanazreh

“…On the other hand, 40.0% of the investigated babies were first born and two thirds of our sample babies were females (66.9%). …”
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Pathways to Resilience: Enhancing Family Well-Being with a Home Visitation Model by Iván A. de la Rosa, Joanne Perry, Victoria Johnson

“…This paper highlights a study that examined outcome measures of a home visitation program, which provided services to first-born children and their parents living in Southwestern New Mexico. …”
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Features of conformation type of black-andwhite cows of different origin estimated by linear classification method by Khmelnychyi L., Karpenko B.

“…The aim was to conduct a comparative analysis of experimental breeds according to the assessment of linear classification and determine the impact of final score for type on milk productivity first-born cows. In general, first-born cows of both breeds were characterized by good linear estimation, especially on a 100-score scale. …”
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Offspring performance and the adaptive benefits of prolonged pregnancy: experimental tests in a viviparous lizard by While, G, Uller, T, Wapstra, E

“…Last born offspring had significantly poorer performance than first born offspring in litters early in the season with this pattern reversed late in the season.5. …”

Non- Disjunction of Chromosome 21 in the Young Mother at Conception by Hala Ahmed ElGindy, Magd Ahmed Kotb, Mohamed Farouk Mohamed, Walaa Alsharany Abuelhamd, Nahed Naguib Alsabagh, Nancy Anis, Aly Elkazaz

“…Twenty (95.2%) were first born to a young mother, only 1 was a second born. …”
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Parent-of-origin effects in SOX2 anophthalmia syndrome. by Osborne, R, Kurinczuk, J, Ragge, N

“…We observed that 14 of the 23 (61%) affected children were the first-born child to their mother, with 10/15 of the mutation cases (66%) and 4/8 deletion cases (50%) being first born. …”

Cox Proportional Hazards Regression for Interval-Censored Data with an Application to College Entrance and Parental Job Loss by HeeJin Kim, Sunghun Kim, Eunjee Lee

“…In particular, when the first-born children experienced their parents’ unemployment at the age of 18, the probability of college admission was reduced nearly by 53% compared to cases where they did not. …”
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Awards Bring Hope and Cheer by Sunday Star, Tan Ee Loo

“…Rachel Sivanathan tires the knot at the age of 20 - it was an arranged marriage. she looked forward to continuing her studies but that plan had to be put on hold with the arrival of her first-born the following year.…”
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Blind adolescents' birth order as a determinant of their perception of family functioning dimensions by Stanimirović Dragana

“…Thus, the results show that first-born child's 'dethronement' has more effect if it is associated with blindness. …”
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Birth order and reproductive stoppage in families of children with autism spectrum disorder by Cagatay Ugur, Aysegul Tonyali, Zeynep Goker, Ozden Sukran Uneri

“…RESULTS: In the study group consisting of children with ASD, the rate of being the first-born child was determined to be more frequent, significantly, compared to the rate in the control group (p = .001). …”
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Family expressiveness and relation to birth order among Chinese young adults in Universiti Malaysia Sabah: A preliminary analysis by Chew, Ying Hui, Grace Wong Ying Heng, Tan, Pyn Ting, Chao, Tung Yin, Walton Wider

“…Furthermore, the family expressiveness among first-born child and later-born child scored highest in the positive submissive, whereas the middle-born child scored highest on positive dominant.…”
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The association between prenatal perfluoroalkyl substance exposure and symptoms of attention-deficit/hyperactivity disorder in 8-year-old children and the mediating role of thyroid... by Sachiko Itoh, Keiko Yamazaki, Satoshi Suyama, Atsuko Ikeda-Araki, Chihiro Miyashita, Yu Ait Bamai, Sumitaka Kobayashi, Hideyuki Masuda, Takeshi Yamaguchi, Houman Goudarzi, Emiko Okada, Ikuko Kashino, Takuya Saito, Reiko Kishi

“…The association was stronger among first-born children in relation to hyperactivity–impulsivity than with regard to inattention. …”
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La designación del sucesor en el antiguo reino de Macedonia by Francisco Javier Fernández Nieto

“…There are more possibilities for the first-born son of each marriage. It is impossible to establish if it was an original system that favours the brothers. …”
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Some Japanese mothers do not follow package instructions of infant formula: a web-based analytical cross-sectional study by Kaori Endoh

“…These four answers did not differ significantly between mothers of children aged < 6 months and ≥ 6 months or between those with first-born and later-born children. Conclusion: This study suggested that some Japanese mothers do not follow package instructions of infant formula in Japan. …”
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