geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Developmental trajectories of aggressive behavior in children from ages 8 to 10: The role of sex and hormones


, : Developmental trajectories of aggressive behavior in children from ages 8 to 10: The role of sex and hormones. American Journal of Human Biology 28(1): 90-97

This study explored the developmental trajectory of aggressive behavior from age 8 to age 10 in school-aged children, taking into account possible sex differences, as well as the involvement of certain hormones. Participants were 90 children (49 boys and 41 girls) from four schools. At the beginning of the study, the children were 8-year old and were in 3rd grade of primary school. The second data collection phase was carried out two years later (at age 10) when the children were in 5th grade (primary). Their aggressive behavior was measured by the Direct and Indirect Aggression Scale, an instrument which uses peer rating. Hormone levels, testosterone, cortisol and estradiol were analyzed using an enzymoimmunoassay technique in saliva samples. The results revealed a difference in aggressive behavior between the ages of 8 and 10, in boys only, who were found to be more aggressive at age 10. A regression analysis revealed that cortisol and estradiol contributed to explaining the changes observed in aggressive behavior in boys. Boys whose cortisol levels rose most between the ages of 8 and 10 were also those whose aggressive behavior increased most during the same timeframe. Moreover, boys whose estradiol levels rose most between the ages of 8 and 10 were also those whose aggressive behavior decreased most during the same timeframe. Our results highlight the importance of studying aggressive behavior from a longitudinal perspective, taking into account sex differences and biological measures.

US$19.90

PMID: 26089078

DOI: 10.1002/ajhb.22750


Other references

Hendee, W.; Bernstein, M.A.; Levine, D., 2012: Scientific journals and impact factors. Skeletal Radiology 41(2): 127-128

Leyns, L.; Dambly-Chaudière, C.; Ghysen, A., 1989: Two different sets of cis elements regulate scute to establish two different sensory patterns. We have analysed the role of the achaete-scute gene complex in the development of the pattern of campaniform sensilla on the wing blade of Drosophila. We show that the complete pattern results from the superimposition of two independent subpattern...

Lorenzi, M.; Ploug, U.J.; Vega, G.; Jansen, J.P., 2015: Liraglutide vs Other Daily GLP-1 Analogues in People with Type 2 Diabetes: A Network Meta-Analysis. Value in Health 18(7): A598-A599

Benioff Hugo, 1962: Movements on major transcurrent faults. Summarizes data on the nature and extent of marginal faults in the circum-Pacific region. The data indicate that most of the large shallow earthquakes in the region are associated with major transcurrent parallel dextral faults which intersect the...

Crawford, D.C.; Nickerson, D.A., 2005: Definition and clinical importance of haplotypes. Advances in genotyping and sequencing technologies, coupled with the development of sophisticated statistical methods, have afforded investigators novel opportunities to define the role of sequence variation in the development of common human dise...

Bilodeau Bruce J., 1979: Devonian-Permian stratigraphy. ESSSO Guidebook: ges 27-34. 1979.

Araujo, K.V.; Freitas Lima, J.A. de; Teixeira, J.C.; Fialho, E.T.; Oliveira, A.I.G. de; Queiroz, A.C. de, 1996: Use of the mobile nylon bag technique to estimate apparent digestibility of nutrients in horses. Digestibility of nutrients in feeds for horses was estimated using the mobile nylon bag technique with small, medium and large bags (3.5 x 3.5, 3.5 x 4.5 and 3.5 x 6.5 cm) in 4 fillies of undefined breed, about 4.5 years old. Passage times of the...

Foissner, W., 1988: Taxonomic and nomenclatural revision of Sladeceks list of ciliates Protozoa Ciliophora as indicators of water quality. Major changes to the nomenclature of ciliates since 1935 are identified and discussed including published work on the splitting of genera, sibling species and nomenclatural rectification. Previously published lists of Sladecek and Wegl on taxonomy...

Michnovicz, J., 1987: Environmental modulation of oestrogen metabolism in humans. A wide variety of factors can influence the ways in which a woman will metabolize the oestrogen she produces. In addition to those variables described here, others include amounts of body fat, alcohol use, thyroid hormone and possibly such common...

Kowithayakorn, L.; Hill, M.J., 1982: A study of lucerne seed development and some aspects of hard seed content. Pollination by bees of lucerne cv. Wairau plants grown in the field was controlled, pods were harvested at 3-day intervals from 10-40 days and at 49, 55 and 75 days after pollination and seed fresh and dry wt. at harvest and m.c., total viability...