The lifelong impact of maternal postpartum behavior

This 2018 French/Italian/Swiss rodent study was an extension of the work done by the group of researchers who performed Prenatal stress produces offspring who as adults have cognitive, emotional, and memory deficiencies and Treating prenatal stress-related disorders with an oxytocin receptor agonist: “Reduction of maternal behavior [nursing behavior, grooming, licking, carrying pups] was predictive of … Continue reading The lifelong impact of maternal postpartum behavior

Sex-specific impacts of childhood trauma

This 2018 Canadian paper reviewed evidence for potential sex-specific differences in the lasting impacts of childhood trauma: “This paper will provide a contextualized summary of neuroendocrine, neuroimaging, and behavioral epigenetic studies on biological sex differences contributing to internalizing psychopathology, specifically posttraumatic stress disorder and depression, among adults with a history of childhood abuse. Given the … Continue reading Sex-specific impacts of childhood trauma

The impact of the last snowflake

Was the recent Swiss avalanche’s cause the last, triggering snowflake, or the billions of snowflakes before it? There’s been a slight increase in the number of PNAS studies that included the “catastrophic” search word from October 2016 to mid-January 2018 compared to the January 2014 to mid-April 2015 period referenced in How well can catastrophes … Continue reading The impact of the last snowflake

Beyond Belief: The impact of merciless beatings on beliefs

Continuing with Dr. Arthur Janov’s May 2016 book Beyond Belief: “p. 17 When someone insults us, we immediately create reasons and rationales for it. We cover the pain. Now imagine a whole early childhood of insults and assaults and how that leaves a legacy that must be dealt with. ..The mind of ideas and philosophies … Continue reading Beyond Belief: The impact of merciless beatings on beliefs

Do the impacts of early experiences of hunger affect our behavior, thoughts, and feelings today?

This 2015 worldwide human study Hunger promotes acquisition of nonfood objects found that people’s current degree of hungriness affected their propensity to acquire nonfood items. The researchers admitted that they didn’t demonstrate cause and effect with the five experiments they performed, although the findings had merit. News articles poked good-natured fun at the findings with … Continue reading Do the impacts of early experiences of hunger affect our behavior, thoughts, and feelings today?

Problematic research: Feigning naivety of the impact of prenatal, infancy and early childhood experiences

What I found curious in this 2012 UK review of 82 studies was the reviewer’s reluctance to highly regard a human’s life before birth, during infancy and in early childhood. There was no lack in 2012 of animal studies to draw from to inferentially hypothesize how a human fetus’ environment causes the fetus to adapt … Continue reading Problematic research: Feigning naivety of the impact of prenatal, infancy and early childhood experiences

The Not-Invented-Here syndrome

I have high expectations of natural science researchers. I assume that their studies will improve over time, and develop methods and experiments that produce reliable evidence to inform us of human conditions. My confidence is often unrealistic. Scientists are people, after all, and have the same foibles as the rest of us. I anticipate that … Continue reading The Not-Invented-Here syndrome

Manufacturing PTSD evidence with machine learning

What would you do if you were a scientist who had strong beliefs that weren’t borne out by experimental evidence? Would you be honest with yourself about the roots of the beliefs? Would you attempt to discover why the beliefs were necessary for you, and what feelings were associated with the beliefs? Instead of the … Continue reading Manufacturing PTSD evidence with machine learning

How well do single-mother rodent studies inform us about human fathers?

Two items before getting to the review: 94% of rodent genera are naturally uniparental; The Rattus and Mus genera used in almost all rodent research aren’t part of the 6% in which fathers also provide offspring care. This 2018 Australian review subject was paternal intergenerational and transgenerational transmission of biological and behavioral phenotypes per this … Continue reading How well do single-mother rodent studies inform us about human fathers?

A study of gene-environment interactions

This 2018 Hungary/UK study used Bayesian analysis to better understand gene-environment interactions that produce depression: “Most genetic studies do not consider the effect of stressors which may be one reason for the lack of replicable results in candidate gene studies, GWAS [genome-wide association studies] and between human studies and animal models..Animal models of depression usually … Continue reading A study of gene-environment interactions