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While severe early infant-child maltreatment will often cause Trauma Altered Development, those changes will occur according to our gender.  As we begin to understand how maltreatment of infants and children changes the way a body-brain-mind-self grows through adaptation to trauma, we must consider the physiological differences between the female and the male brain.

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I have been thinking about a man’s comment posted yesterday to +PTSD AND SEVERE ABUSE SURVIVORSHIP – CONCLUSION, which included the following:

“There are times when I am doing certain things that I have mastered so purely, that when I am in the middle of “being”, I am, whole, relaxed and alive.

There is no me and you, there just IS, if that makes sense.

This tells me that when we can let go of all the memories of pain, anger, abandonment, being on the defensive all the time, that WE can get for ourselves what was not there.”

This brings to my mind a topic that I haven’t included yet on my blog – physiological differences between a female and a male brain which affects how we receive and process information.  As we learn about how severe early maltreatment changes an infant-child’s growing and developing body-brain, we must also consider that gender differences occur every step of the way.

I replied to this comment in terms of the fact that memory not only builds an early forming body-brain, but also forms itself into that body-brain.  We cannot ‘let go’ of these memories.  They ARE integrated with who we are – body-brain-mind-self – from the time of our beginnings.

We continually make new memories into our body.  We can achieve amazing consciously altered changes in the present.  Yet we have no choice but to process our self in our lifetime with the structural foundation of the body-brain that was made for us – through secure and safe attachments in a mostly benevolent world, or through insecure and unsafe attachments in a mostly malevolent one.  Our fundamental physiology evolved in our infant-early childhood according to the signals we received from our environment so that we could adjust and alter our development accordingly.

BUT – I need to put the big BUT in here:  Male and female brains are different from our conception.  There is much yet to be learned about what these differences actually are and how they affect us.  When I talk about Trauma Altered Development, it is important to include the concept that our developing early brains are responding to input from the environment differently — according to our sex — from the start.

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What follows is a presentation of links to LOTS of information about the differences between the female and male brain, and about how severe maltreatment of infant-children during development changes them – each according to their body-brain’s gender.

As you read them, think “adult” rather than just “child” — if we survive our abuse, these trauma consequences do not simply disappear!

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Here is a link to an excellent (and readable!) article – highly recommended!

Understanding the Effects of Maltreatment on Early Brain Development
In Focus: Understanding the Effects of Maltreatment on Early Brain Development

“The effects of abuse and neglect on the developing brain during children’s first few years can result in various mental health problems. For example:

• Diminished growth in the left hemisphere may increase the risk for depression (Teicher, 2000).
• Irritability in the limbic system can set the stage for the emergence of panic disorder and post-traumatic stress disorder (PTSD) (Teicher, 2000).
• Smaller growth in the hippocampus and limbic abnormalities can increase the risk for dissociative disorders and memory impairments (Teicher, 2000).
• Impairment in the connection between the two brain hemispheres has been linked to symptoms of attention-deficit/hyperactivity disorder (ADHD) (Teicher, 2000).
• Severely neglected children who have been deprived of sensory stimulation-including touch, movement, and sound-may be at risk for Sensory Integration Disorder (SID) (Parent Network for the Post-Institutionalized Child, 1999).
• Children who have been raised in environments that totally disregarded their needs for comfort, stimulation, and affection may be at risk for Reactive Attachment Disorder (Parent Network for the Post-Institutionalized Child, 1999).

We are learning more about the serious, long-term consequences of abuse and neglect on brain development, and subsequent physical, cognitive, emotional, and social growth.”

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An interesting collection of information about sex differences in the brain is presented on the Medical Education Online website, I encourage readers to click on this link for a straightforward description of what some of these fundamental differences are.  Note the description of differences between the sexes in their emotional-social limbic brain structure and operation.
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Another interesting presentation of research related to this topic can be found at:

Female, male brain differences studied

BY: MELANIE MORAN

5/05/2006 – New research attempting to shed light on the age old question of how male and female brains differ has found that timing is everything.

I personally strongly suspect that a severely abused infant experiences brain developmental trauma-related changes as their brain-mind grows to experience TIMING.

My own experience through a severely abusive infant-childhood left me with permanent changes in regard to how I create, store, process and consider my own memory of myself in the world.  I suspect that because I am female my dissociation might have originated and therefore operates differently than it would if I had been born a boy.

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Sex Hormones Influence Human Cognitive Pattern

“There are consistent differences between men’s and women’s cognitive skills, indicating, whatever the source, that their nervous systems also differ. Cognitive sex differences appear well before puberty, are present across cultures, and to some extent parallel differences seen in nonhuman mammals. Nonetheless, we must keep in mind that in the larger comparative context, the similarities between men’s and women’s brains far outweigh the differences.”

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Here’s another great article that describes in part how women relate to young children differently than men do:

Understanding the Difference Between Men and Women

by Michael G. Conner, Psy.D,

“What is very interesting about the differences between men and women is their access to right brain. Women are more connected to their right brain because the connective tissue is greater. Men can access their right brain but they have to “listen” for the messages it provides. It is easy for most men to ignore what the right brain has to offer.

The right brain is focused, for the most part, on information that is not left brain. The right brain “makes sense” of the qualities of voice such as tone, pitch, volume. It also “makes sense” of facial expressions, gestures, body language and the feelings we get. In a sense, our right brain is our emotional radar. It picks up on information that is felt, perceived, heard or seen. This is one reason why women are so much more aware of how children and adults are feeling. This comes in handy to a mother because it allows a mother to “read” and understand an infant based on behaviors and sounds. That’s important because children can’t speak. It is also why women are usually much more attuned, sensitive and unable to ignore an infant who is upset. Mothers seem to know more for reasons that they cannot explain fully to fathers.”

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This Psychology Today article, The New Sex Scorecard by Hara Estroff Marano, about sex differences and the brain, states, “Males and females, it turns out, are different from the moment of conception, and the difference shows itself in every system of body and brain.”  It’s an excellent, easy to read description about our differences, and from here we can begin to think about how early infant-child trauma during our body-brain develop can affect us differently.

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Are There Differences between the Brains of Males and Females?

Renato M.E. Sabbatini, PhD

“The conclusion is that neuroscience has made great strides in the 90s, regarding the discovery of concrete, scientifically proved anatomical and functional differences between the brains of males and females.”

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Male brain vs. female brain I: Why do men try to figure out their relationships? Why do women talk to their cars?

“These sex differences emerged during the course of human evolution because men and women often faced different selection pressures. Men have come to acquire systemizing and mechanistic skills because such skills were necessary for inventing and making tools and weapons. At the same time, low empathizing ability was helpful for men in tolerating solitude during long hunting and tracking trips, and for committing acts of interpersonal violence and aggression necessary for male competition. (It is very difficult to kill other people if you strongly feel for them.) Similarly, women have come to acquire empathizing and mentalistic skills because they facilitate various aspects of mothering, such as anticipating and understanding the needs of infants who cannot yet talk, or making friends and allies in new environments, in which ancestral women found themselves upon marriage.”

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Differences in Male and Female Brain Structure

“… depression and chronic anxiety are diagnosed far more often in women; this may have to do with differences in the chemical composition of the brain, as one study has shown that women produce only about half as much serotonin (a neurotransmitter linked to depression) as men and have fewer transporters to recycle it.

Or, it may have to do with how the various sides of the female brain respond to emotions and pain. Men, on the other hand, are more likely to be diagnosed with autism, Tourette’s syndrome, dyslexia and schizophrenia, to name a few.

Additionally, disorders like schizophrenia and Alzheimer’s disease can show up differently in men and women.

Based on the location of neurons, brain injuries may affect men and women differently.

This sort of knowledge could affect drug treatments, or at least explain why some drugs work differently in men and women. It extends beyond just drugs, though. One study has found that men and women’s brains fire differently when they do plan a visually guided action, like reaching for an object. This may necessitate changes in physical therapy after a brain disorder that affects one side of the brain, like a stroke.”

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Gender-Specific Differences Found In Human Brain

“Men and women’s brains are distinctly different. While men have more neurons in the cerebral cortex, the brain’s outer layer, women have more neuropil, which contains the processes allowing cell communication.”

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Gender differences seen in brain connections

“Human brains appear to come in at least two flavours: male and female. Now variations in the density of the synapses that connect neurons may help to explain differences in how men and women think.”

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The Effect of Childhood Trauma on Brain Development

“As recently as the 1980s, many professionals thought that by the time babies are born, the structure of their brains was already genetically determined. However, emerging research shows evidence of altered brain functioning as a result of early abuse and neglect. The key to why this occurs appears to be in the brain.”

The following studies highlight some of the effects of maltreatment on brain development:

Bremner, J. D., Southwick, S. M., & Charney, D. S. (1991, fall). Animal Models for the Neurobiology of Trauma. National Center for PTSD Research Quarterly, 2(4), 1-7. (PDF Format – Acrobat Reader required)

Clinicians will notice parallels between the behavioral and biological sequelae of inescapable stress and the phe-nomenology of PTSD symptoms in their patients. The animal model of inescapable stress parallels the experience of being pinned down in combat or being the victim of repeated assaults. Inescapable stress produces a variety of behaviors in animals including abnormal alarm states, aggression, sensitivity to stress, altered sleep patterns, deficits in learning and memory, and withdrawal. These behaviors resemble those seen in patients with PTSD. For instance, evidence from animal findings of alterations in noradrenergic brain systems is consistent with emerging findings of abnormalities in noradrenergic systems in patients with PTSD as evidenced by abnormal responses to the alpha-2 noradrenergic receptor antagonist yohimbine. The identification of specific neurobiological abnormalities may lead to the development of new psychopharmacological and psychotherapeutic treatments based on the pathophysiology of PTSD.

Bremner JD, Randall P, et al. (1997). MRI-based measurement of hippocampal volume in posttraumatic stress disorder related to childhood physical and sexual abuse: A preliminary report. Biol Psychiatry, 41, 23-32.

Bremner, J. D. (1999). The Lasting Effects of Psychological Trauma on Memory and the Hippocampus.

Childhood abuse and other extreme stressors can have lasting effects on brain areas involved in memory and emotion. The hippocampus is a brain area involved in learning and memory that is particularly sensitive to stress

Bremner, J. D. (2000). The Invisible Epidemic: Post-Traumatic Stress Disorder, Memory and the Brain. (PDF)

The biology of soul murder: Fear can harm a child’s brain. Is it reversible? (Nov. 11, 1996). U.S. News & World Report

Excerpt: “Once viewed as genetically programmed, the brain is now known to be plastic, an organ molded by both genes and experience throughout life. A single traumatic experience can alter an adult’s brain: A horrifying battle, for instance, may induce the flashbacks, depression and hair-trigger response of post-traumatic stress disorder (PTSD). And researchers are finding that abuse and neglect early in life can have even more devastating consequences, tangling both the chemistry and the architecture of children’s brains and leaving them at risk for drug abuse, teen pregnancy and psychiatric problems later in life.“

Centers for Disease Control and Prevention (CDC). (2008). The Effects of Childhood Stress on Health Across the Lifespan

This booklet summarizes the research on childhood stress and its implications for adult health and well-being. Of particular interest is the stress caused by child abuse, neglect, and repeated exposure to intimate partner violence. Intensive and prolonged stress can lead to a variety of short- and long-term negative health effects. It can disrupt early brain development and compromise functioning of the nervous and immune systems. In addition, childhood stress can lead to health problems later in life including alcoholism, depression, eating disorders, heart disease, cancer, and other chronic diseases. This publication provides violence prevention practitioners with ideas about how to incorporate information on childhood stress into their work.
http://www.cdc.gov/ncipc/pub-res/pdf/Childhood_Stress.pdf (warning large file)

Chamberlain, D.B. (1989). Babies Remember Pain. Pre- and Peri-natal Psychology, 3(4), 297-310.

We are still enthralled by popular myths that babies don’t feel, don’t think, don’t remember, and have no sense of self. Scientific research shows these myths to be false and calls into question painful procedures and rituals at birth that are both inhumane and unnecessary.

De Bellis, Michael D. (1999). Developmental Traumatology: Neurobiological Development in Maltreated Children With PTSD. Psychiatric Times, 16 (11),

Science shows that child abuse may be associated with alterations of the body’s major stress systems. These neurobiological effects may cause delays or deficits in a child’s ability to achieve age-appropriate behavioral, cognitive and emotional regulation.

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What about differences in brain between the sexes when it comes to Trauma Altered Development related to malevolent early treatment?

Here is an excellent article on differences in brain development between girls and boys:

Gender Differences in the Sequence of Brain Development

by Leonard Sax, M.D., Ph.D.

“The most profound difference between girls and boys is not in any brain structure per se, but rather in the sequence of development of the various brain regions. The different regions of the brain develop in a different sequence, and different tempo, in girls compared with boys.”

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Gender Differences in Dissociation:  A Dimensional Approach

From abstract:

“Considering that epidemiological research on dissociative disorders has suggested a 9 to 1 predominance of female cases, this study investigated the relationship between gender and dissociation using a dimensional approach. A total of 2,153 participants from different diagnostic groups completed the Dissociative Experience Scale. …. There were no significant sex differences in the distribution of high dissociators. Our findings suggest that men and women do not generally differ in dissociative psychopathology.”

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Sex differences in brain maturation in maltreatment-related pediatric posttraumatic stress disorder

“These data suggest that there are sex differences in the brain maturation of boys and girls with maltreatment-related PTSD.”

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Developmental traumatology part II: brain development

(study of 44 maltreated children and adolescents with PTSD and 61 matched controls )

“Results: PTSD subjects had smaller intracranial and cerebral volumes than matched controls. The total midsagittal area of corpus callosum and middle and posterior regions remained smaller; while right, left, and total lateral ventricles were proportionally larger than controls, after adjustment for intracranial volume. Brain volume robustly and positively correlated with age of onset of PTSD trauma and negatively correlated with duration of abuse. Symptoms of intrusive thoughts, avoidance, hyperarousal or dissociation correlated positively with ventricular volume, and negatively with brain volume and total corpus callosum and regional measures. Significant gender by diagnosis effect revealed greater corpus callosum area reduction in maltreated males with PTSD and a trend for greater cerebral volume reduction than maltreated females with PTSD. The predicted decrease in hippocampal volume seen in adult PTSD was not seen in these subjects.

Conclusions: These data suggest that the overwhelming stress of maltreatment experiences in childhood is associated with adverse brain development.”

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Brain Development:  Evidence of Gender Differences (text review page)

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(I couldn’t access the text of this online, but you can order it if you want)

Brain structures in pediatric maltreatment-related posttraumatic stress disorder: a sociodemographically matched study
Biological Psychiatry, Volume 52, Issue 11, Pages 1066-1078

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Developmental Problems of Maltreated Children

“Research has estimated that 10% to 61% of maltreated children have mental health problems….  Undoubtedly, differences in maltreatment status, duration, and severity as well as the way psychopathology was measured account for some discrepancies in prevalence.”

[Linda note:  Whether or not a child has a safe and secure adult attachment is a MAJOR factor that affects a traumatized child’s resiliency.]

“Maltreated boys display higher rates of aggression than maltreated girls whereas maltreated girls displayed higher rates of internalizing problems (e.g., depression, anxiety, somatic, etc.) than maltreated boys

“Health, Growth and Motor Delays, and Compromised Physiological Systems

These fast facts highlight key issues related to the occurrence of developmental problems for maltreated children younger than the age of 3:

• Twenty-two percent to eighty percent demonstrate acute and chronic health problems
• Eleven percent demonstrate failure to thrive
• Twenty percent demonstrate growth delays
• Four percent to forty-seven percent demonstrate gross and fine motor delays

The occurrence of developmental problems for maltreated children younger than the age of 3

• Twenty-three percent to sixty-five percent of maltreated children demonstrate cognitive delays
• Fourteen percent to sixty-four percent of maltreated children demonstrate speech and language delays

Common problems seen in maltreated children younger than the age of 3:

• Poor emotional comprehension
• Heightened arousal to negative emotions
• Increased expression of negative emotion
• Increased evidence of insecure attachment relationships
• Poor peer relations and social competence

Diagnosable mental health difficulties in very young children. The occurrence of developmental problems for maltreated children younger than the age of 3 is summarized in these prevalence data:

• Fourteen percent to thirty-seven percent of maltreated children demonstrate externalizing problems such as aggressive behavior and oppositional behavior
• Approximately 11% of maltreated children demonstrate internalizing problems such as depression, anxiety, and somatic [physical] complaints
• Maltreated children exhibit the following specific disorders:
  • Reactive Attachment Disorder — approximately 7%
  • Post Traumatic Stress Disorder or the PTSD symptom of hypervigilance approximately 7%
  • Adjustment Disorders — 40%
  • Regulatory Disorders — 22%”

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