Webb Therapy Uncategorized The ‘Triune Brain’ theory by Neuroscientist Paul MacLean — an evolutionary perspective

The ‘Triune Brain’ theory by Neuroscientist Paul MacLean — an evolutionary perspective

The Concept of the "Triune Brain"

In the 1960s, American neuroscientist Paul MacLean formulated the ‘Triune Brain’ model, which is based on the division of the human brain into three distinct regions. MacLean’s model suggests the human brain is organized into a hierarchy, which itself is based on an evolutionary view of brain development. The three regions are as follows:

  1. Reptilian or Primal Brain (Basal Ganglia)
  2. Paleomammalian or Emotional Brain (Limbic System)
  3. Neomammalian or Rational Brain (Neocortex)

At the most basic level, the brainstem (Primal Brain) helps us identify familiar and unfamiliar things. Familiar things are usually seen as safe and preferable, while unfamiliar things are treated with suspicion until we have assessed them and the context in which they appear. For this reason, designers, advertisers, and anyone else involved in selling products tend to use familiarity as a means of evoking pleasant emotions.

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Problematic Thinking Styles (continued)Problematic Thinking Styles (continued)

Hello readers! A few of the cognitive styles below were mentioned in my last post. As humans, we have a tendency to forget things so a bit of revision can be useful.

Many people have cognitive processes that result in overall unhelpful thinking styles that they tend to apply globally across situations and which may result in emotional distress (such as depression or anxiety) or unhelpful behaviours (such as anger or avoidance). Some of the most problematic thinking styles are listed in the extract below.


Mental Filter: This thinking styles involves a “filtering in” and “filtering out” process – a sort of “tunnel vision”, focusing on only one part of a situation and ignoring the rest. Usually this means looking at the negative parts of a situation and forgetting the positive parts, and the whole picture is coloured by what may be a single negative detail.


Jumping to Conclusions: I’m sure you’ve heard people say on television, “Don’t jump to conclusions” or “The truth is we just don’t know yet”. We jump to conclusions when we assume that we know what someone else is thinking (mind reading) and when we make predictions about what is going to happen in the future (predictive thinking).


Personalisation: This involves blaming yourself for everything that goes wrong or could go wrong, even when you may only be partly responsible or not responsible at all. You might be taking 100% responsibility for the occurrence of external events.


Catastrophising: Catastrophising occurs when we “blow things out of proportion” and we view the situation as terrible, awful, dreadful, and horrible, even though the reality is that the problem itself is quite small. A helpful restructuring of this cognition is to ask yourself if the situation will still be awful, terrible, or dreadful in a month. There may be ongoing consequences or stress involved if you lose a job or a relationship ends, so validate the experience you are having but also take a look at the big picture. What’s the worst that could happen? Why is the worst so “bad”? And if you are being realistic about the issue, reach out for some help if you can.


Black & White Thinking: This thinking style involves seeing only one extreme or the other. You are either wrong or right, good or bad and so on. There are no in-betweens or shades of grey.


Should-ing and Must-ing: Sometimes by saying “I should…” or “I must…” you can put unreasonable demands or pressure on yourself and others. Although these statements are not always unhelpful (e.g. “I should not get drunk and drive home”), they can sometimes create unrealistic expectations.


Overgeneralisation: When we overgeneralise, we take one instance in the past or present, and impose it on all current or future situations. If we say “You always…” or “Everyone…”, or “I never…” then we are probably overgeneralising.


Labelling: We label ourselves and others when we make global statements based on behaviour in specific situations. We might use this label even though there are many more examples that aren’t consistent with that label.


Emotional Reasoning: This thinking style involves basing your view of situations or yourself on the way you are feeling. For example, the only evidence that something bad is going to happen is that you feel like something bad is going to happen. I live with anxiety and it can be debilitating at times. I use my “wiser thinking” or “rational thinking” to evaluate whether I am operating from an emotional mindset. You might ask yourself: “What’s the evidence?”, “Does the past necessarily predict the future?”, “Am I angry or fearful right now because that might be clouding my judgement?”. It can be helpful to talk to someone who isn’t caught in your emotional headspace, or perhaps wait for the emotion to subside to think about the situation again.


Magnification and Minimisation: In this thinking style, you magnify the positive attributes of other people and minimise your own positive attributes. It’s as though you’re explaining away your own positive characteristics.

(CCI, 2008)

Predicting behaviour: Social Psychological Models of BehaviourPredicting behaviour: Social Psychological Models of Behaviour

Social psychological models of behaviour attempt to explain why individuals act the way they do in various social contexts. These models integrate individual, interpersonal, and societal factors to provide insights into behaviour. Here’s an overview of some key models:

1. Theory of Planned Behaviour (TPB) proposes that behaviour is influenced by:

– Attitudes toward the behaviour

– Subjective norms (perceptions of others’ approval)

– Perceived behavioural control (i.e., confidence in one’s ability to perform the behaviour [self-efficacy])

2. Social Cognitive Theory (SCT) suggests that behaviour is the result of:

– Reciprocal interaction between personal factors (beliefs, attitudes), environmental factors (social norms), and behaviour itself

– Concepts like self-efficacy (belief in one’s ability) play a major role.

3. Health Belief Model (HBM), designed to predict health-related behaviours. Behaviour is driven by factors such as perceived:

– Susceptibility (risk of harm)

– Severity (consequences of harm)

– Benefits (advantages of action)

– Barriers (obstacles to action)

4. Cognitive Dissonance Theory explains how people strive for consistency between their beliefs, attitudes, and behaviours. When inconsistency arises, they feel dissonance (mental discomfort) and are motivated to reduce it by changing their attitudes or actions.

5. Social Identity Theory examines how individuals define themselves within social groups. Behaviour is influenced by group membership, including in-group favouritism and out-group bias.

6. Attribution Theory focuses on how people explain their own and others’ behaviours. Explains behaviour as being attributed either to internal (dispositional) or external (situational) factors. For example, it is common for people to attribute negative outcomes in their life to external factors rather than internal factors.

7. Elaboration Likelihood Model (ELM) explains how people process persuasive messages and what determines whether those messages will change attitudes or behaviour. It’s often applied in areas like marketing, communication, and public health campaigns. The ELM identifies two primary routes through which persuasion can occur:

– Central Route; this route involves deep, thoughtful consideration of the content and logic of a message. People are more likely to take the central route when they are motivated to process the message (e.g., the topic is personally relevant or important to them) and they can understand and evaluate the arguments (e.g., they aren’t distracted, and they have enough knowledge about the subject). Persuasion through the central route tends to result in long-lasting attitude change that is resistant to counterarguments. Example: A person researching the pros and cons of electric cars before deciding to buy one.

– Peripheral Route, which relies on superficial cues or heuristics (mental shortcuts) rather than the message’s content. People are more likely to take the peripheral route when they are not highly motivated or lack the ability to process the message deeply, and when they focus on external factors like the attractiveness or credibility of the speaker, emotional appeals, or catchy slogans. Persuasion through this route tends to result in temporary attitude change that is less resistant to counterarguments. Example: A person choosing a product because their favourite celebrity endorsed it.

8. Self-Determination Theory (SDT) emphasizes intrinsic and extrinsic motivation. It emphasizes the role of intrinsic motivation—doing something for its inherent satisfaction—over extrinsic motivation, which is driven by external rewards or pressures. It suggests that behaviour is influenced by the need for:

– Autonomy (control over one’s actions); When people perceive they have a choice and are acting in alignment with their values, their motivation and satisfaction increase.

– Competence; Refers to the need to feel effective, capable, and successful in achieving desired outcomes. People are motivated when tasks challenge them at an appropriate level and provide opportunities for growth and mastery. Example: A gamer progressing through increasingly difficult levels, gaining skills and confidence along the way.

– Relatedness; Refers to the need to feel connected to others and experience a sense of belonging. Supportive relationships and positive social interactions enhance motivation and well-being. Example: Employees feeling a bond with their colleagues in a collaborative work environment.

9. Social Learning Theory proposes that behaviour is learned through observation and imitation. Role models and reinforcement play a key role in shaping actions.

10. Transtheoretical Model (Stages of Change) explains behaviour change as a process occurring in stages: precontemplation, contemplation (ambivalence), preparation, action, and maintenance

These models provide frameworks to understand behaviours in contexts like health, decision-making, group dynamics, and social influence.

Three rules for identifying abnormal child sexual behavioursThree rules for identifying abnormal child sexual behaviours

Retrieved and edited 06/12/2021 from “Voice of Experience: Three rules for identifying abnormal child sexual behaviors” by Gregory K. Moffatt, a veteran counsellor with more than 30 years experience. If you are a survivor of sexual trauma at any age, I encourage you not to read this article.

From the perspective of Moffatt’s professional experience, childhood sexual behaviours can be grouped into three categories: 1. normal behaviours, 2. behaviours that are not normal but not unusual, and 3. behaviours that are abnormal or statistically rare. For the purpose of this post, I will be replacing the word “normal” with “natural” and/or “common” moving forward.


Rule No. 1: Natural or common sexual behaviours in children are never forced. The exploration is mutual. While one child likely had the idea first, both children must participate freely. This doesn’t mean that two children might willingly agree to engage in abnormal sexual behaviours, however, therefore read the next to rules for clarification.


Rule No. 2: Natural or common sexual behaviours in children are never painful. Children who behave within cultural and developmental norms will stop what they are doing when they realise they have caused pain.


Rule No. 3: Natural or common sexual behaviour in children is never invasive. Natural childhood curiosity does not include inserting objects or one’s own body parts into the cavities of others — anus, vagina, mouth, etc.


I’m unsure why Moffatt didn’t make this a 4th rule – he did add that most of the time, this type of childhood behaviour occurs between children of similar age. It is highly unusual for a young child to sexually engage with a teen without violating one of the three rules above. That behaviour definitely calls for further investigation. And, certainly, any sexual interaction between an adult and a child is cause for mandated reporting.