Related Experiment Video
Updated: Jul 1, 2026

11:51
Combining Behavioral Endocrinology and Experimental Economics: Testosterone and Social Decision Making
Published on: March 2, 2011
Sex hormones and human destiny
1Department of Psychology (Social and Developmental), University of Cambridge, Cambridge, UK.
Journal of Neuroendocrinology
|September 17, 2008
Summary
Prenatal testosterone influences sex-typical behaviors and sexual orientation. This hormone plays a role in why some individuals exhibit behaviors aligned with their sex, while others do not.
Area of Science:
- Neuroscience
- Developmental Psychology
- Behavioral Endocrinology
Background:
- Human behavior exhibits significant sex differences, with variations in sex-typical behaviors and sexual orientation.
- Understanding the biological underpinnings of these differences is crucial for comprehending human diversity.
- Factors influencing non-typical sex-typed behaviors (e.g., 'tomboys') and variations in sexual orientation require investigation.
Purpose of the Study:
- To explore the role of prenatal testosterone in shaping sex differences in human behavior.
- To investigate the potential influence of prenatal hormone exposure on behaviors such as toy preference and sexual orientation.
Main Methods:
- This study synthesizes existing research on behavioral endocrinology and developmental psychology.
- It examines evidence linking prenatal androgen exposure to specific behavioral outcomes.
- A review of studies on sex-typed play, gender identity, and sexual orientation is conducted.
Main Results:
- Prenatal testosterone exposure is implicated as a significant factor in the development of sex-typical behaviors.
- Evidence suggests a correlation between prenatal androgen levels and variations in sexual orientation.
- Hormonal influences during prenatal development may contribute to behaviors that deviate from traditional sex roles.
Conclusions:
- Prenatal testosterone is a key biological factor contributing to sex differences in human behavior.
- Hormonal influences during critical developmental periods impact a range of behaviors, including those related to gender and sexuality.
- Further research is warranted to fully elucidate the complex interplay between prenatal hormones and human behavior.
Related Concept Videos
Gonadal and Placental Hormones
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair growth — and...
Major Hormones and Their Functions
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
The Y Chromosome Determines Maleness
The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Signs of Puberty
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
Hormones of the Adrenal Glands
Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and corticosterone...
Target Cell Response to Hormones
Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...

