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

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.

Hello readers. I hope you are well. I imagine some of you are struggling and some of you are flourishing. Life consists of both. As humans, we relish pleasurable feelings and experiences and we tend to dislike uncomfortable emotions and experiences. I get it. I am just like you. We share this. I hope that provides some comfort.

What is human development?

Human development can be described as “systematic changes and continuities in the individual that occur between conception and death, or from “womb to tomb”” (Sigelman, De George, Cunial, & Rider, 2019, p. 3).

Human development involves the continuities (i.e., what remains consistent across time) and the systematic changes (i.e., patterns of change that are expected to come in order across time) that one experiences throughout the lifespan. Based on my education, there are three domains of continuity and change: 1. The physical and biological, 2. Cognitive (i.e., mind processes/thinking), and 3. Psychosocial and emotional. Let’s open these one at a time.

Physical development includes:

• Physical and biological processes (e.g., genetic inheritance).
• Growth of the body and its organs.
• Functioning of physiological systems (e.g., brain).
• Health and wellness.
• Physical signs of ageing and changes in motor abilities.

Cognitive development includes:

Perception: the sensing of stimuli in our environment (internal and external), sending that information to the brain to be identified and interpreted in order to represent and understand our experience of the world and give it meaning. All perception involves signals that go through the nervous system.

Attention: the ability to actively (and often, involuntarily) process specific information in the environment while tuning out other details. Attention is a very interesting cognitive process because when we bring mindfulness to our thoughts we become open to the direction and attention of our mind. Remember this: where attention goes, energy flows.

Language: very broadly, Language is a communication system that involves using words (i.e., sounds arranged together) and systematic rules to organise those words into sentences and meaning, to transmit information from one individual to another. I was never very interested in language when I was studying at university however that has changed. We used language and concepts to talk to ourselves, about other people, and it is open to misinterpretation, error, and oftentimes language can be used as a means to hurt people or … bring us closer together.

Learning: very broadly defined as a relatively permanent change in behaviour, thinking, and understanding as a result of experience. Experience is everything from formal education to unique personal experience. We learn from each other, the world around us, books, movies, self-reflection and education etc. All of which are experiences.

Memory: Memory refers to the processes that are used to gather, organise, store, retain, and later retrieve information. I’m sure you’ve all seen a tv show or read a book about a person with Amnesia or Alzheimer’s disease. Imagine what your life would be like if you didn’t have the function of memory. I wouldn’t be able to type this very well, I don’t think. I wouldn’t remember my loved ones or what was dangerous in my environment. I know we all have unpleasant memories too and that may feel like a negative evolutionary by-product – however it is actually designed to protect us. Memory is finite – we actually forget a lot of stuff, or perhaps more accurately, we do not have the capacity to store and recall everything we experience.

Intelligence: I would like to reframe intelligence from what might be a common belief. Intelligence does not mean academically gifted as is considered valuable in Western society. I think Olympians and caregivers/parents have an intelligence that I do not because I haven’t learned their skills. Intelligence involves the ability to learn (i.e., sport, academics, the arts, swimming, survival, interpersonal skills), emotional knowledge, creativity, and adaptation to meet the demands of the environment effectively

Creativity: I consider creativity to be an evolutionary gift of our imagination, providing humans with the ability to generate and recognize ideas, consider alternatives, think of possibilities that may be useful in solving problems, communicating with others, and entertaining ourselves and others. Creativity can be stunted when we are struggling or caught in reactivity to external pressures or perceived stress.

Problem solving: is a process – yes, a cognitive one but also a behavioural process. It is the act of defining a problem; determining the cause of the problem; identifying, prioritizing, and selecting alternatives for a solution; and implementing a solution. Problem solving can be both creative or stress driven. I like to say whenever I am solving a problem I am also making a decision. A decision of mine is a choice. At university, our problem solving lessons were coincided with decision making which is why I think of it that way.

Psychosocial development involves:

Aspects of the self (i.e., your identity – which may change over time), and social and interpersonal interactions which include motives, emotions, personality traits, morality, social skills, and relationships, and roles played in the family and in the larger society. This is a huge area to be explored. I will endeavour to elaborate on our psychosocial development in later blogs.

In the late 1950’s, a German-American developmental psychologist named Erik Erikson created a theory for human psychosocial development across the lifespan. His theory suggests that human personality develops in a predetermined order through 8 stages of psychosocial development. See the table below: