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Blind Procedures

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which child was...

Blinding

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.

Major Hormones and Their Functions

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.

Psychosurgery

Psychosurgery

Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...

Hormonal Regulation

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.

Hormonal Regulation

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.

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Related Experiment Video

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Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease

Published on: July 24, 2019

Hormone blindness in precision psychiatry.

Stanley Lyndon^1,2, Irene Gonsalvez^1,2

¹Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA.

The British Journal of Psychiatry : the Journal of Mental Science

|July 8, 2026

Summary

Precision psychiatry must account for women's reproductive neuroendocrine dynamics. Standardized reporting of reproductive stage and hormone exposure is crucial for reducing heterogeneity and improving clinical utility in psychiatric research.

Keywords:

Precision medicine evidence-based mental health general adult psychiatry neuropsychiatry perinatal psychiatry

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Last Updated: Jul 9, 2026

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Area of Science:

Neuroscience
Psychiatry
Endocrinology

Background:

Precision psychiatry often overlooks reproductive neuroendocrine dynamics in women.
This oversight contributes to heterogeneity and limits clinical utility in psychiatric care.

Purpose of the Study:

To advocate for routine, standardized reporting of reproductive stage, exogenous hormone exposure, and staging methods in psychiatric research.
To demonstrate how integrating hormonal data can improve psychiatric research and clinical practice.

Main Methods:

Literature review and theoretical argument.
Analysis of existing research methodologies in precision psychiatry.
Proposal for a standardized reporting framework.

Main Results:

Current practices in precision psychiatry inadequately address female reproductive neuroendocrine dynamics.
Standardized reporting of hormonal and reproductive data can significantly reduce research heterogeneity.
Integrating hormone data can sharpen mechanistic understanding and improve treatment safety and efficacy.

Conclusions:

Routine reporting of reproductive stage and hormone exposure is essential for reliable precision psychiatry in women.
Hormone-integrated research promises to enhance the safety, efficacy, and clinical utility of psychiatric treatments.
Addressing neuroendocrine dynamics is critical for advancing women's mental healthcare.