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Addiction Theories

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There have been various theories and models proposed over time to help us understand why individuals use alcohol and other drugs, and why some people become dependent or ‘addicted’ but not others. The following are several models or theories of addiction. They reflect the political, medical, spiritual, and social forces of those times in history.

The Moral Model

Alcohol and tobacco was introduced in the Western countries during the 1500’s. The widespread use and misuse of chemical substances resulted in a range of social problems and it was thought by some that substance use was “problematic” and “morally wrong” (Lassiter & Spivey, 2018). The moral model viewed AOD dependency as a moral and personal weakness that involved a lack of self-control, and was often viewed as a potential danger to society (Stevens & Smith, 2014).

The moral model considered addiction a “sin” and a result of free, yet irresponsible, choice. Therefore, many politically conservative groups, religious groups, and legal systems tended to punish the individual who uses AOD. The moral model or attitude towards addiction can still be seen today in certain cultures. Those who still believe addiction is morally “wrong” tend to perceive the most appropriate way to treat the individuals who use AOD are through legal sanctions, such as imprisonment and fines. For example, in many countries, drivers who are caught under the influence of alcohol or other drugs are not considered for treatment programs but instead receive court sentences as punishments (Fisher & Harrison, 2017).

This model has been rejected by alcohol and other drugs professionals as unscientific and contributes to the stigma surrounding addiction and substance use (White, 1991, cited in Fisher & Harrison, 2017).

The Disease Model

This model takes up the medical viewpoint and proposes addiction as a disease or illness that an individual has. It proposed that addiction is a disease that is progressive and chronic whereby the individual holds no control as long as the substance use continues. In other words, their addiction will continue to deteriorate with the continuous AOD (Thombs & Osborn, 2019). It also proposes that individuals who uses AOD can never be cured from addiction, though it can be readily treated through sustained abstinence such as self-help fellowships and treatment community. 

In the 1940s, Jellinek proposed a disease model in relation to alcoholism, arguing that it is a disease caused by a physiological deficit in an individual, making the person permanently unable to tolerate the effects of alcohol (Stevens & Smith, 2014). Jellinek identified signs and symptoms and clustered them into stages of alcoholism, as well as progression of the disease, which form the basis of 12-step or Anon-type programs (e.g., Alcoholics Anonymous and Narcotics Anonymous; Stevens & Smith, 2014). 

Under the disease model, treatment requires complete abstinence. Once an individual has accepted the reality of their addiction and ceased substance use, they are labelled as being in recovery, but are never ‘cured’ (e.g., “Once an alcoholic, always an alcoholic”; Thombs & Osborn, 2019). Whilst originally applied to alcohol dependency, it has now been generalised to other substances and many traditional substance use treatment models are based on this model (Capuzzi & Stauffer, 2020; Stevens & Smith, 2014).

The disease model offered an alternative to the moral theory, helping to remove the moral stigma attached to addiction and replacing it with an emphasis on treatment of an illness (Capuzzi & Stauffer, 2020). Disease theory helped to explain how some people experience the physiological effects of addiction such as dependence, tolerance, and withdrawal more than others, and how these mechanisms are caused by a biochemical abnormality in an individual which increases their likelihood of developing a dependency (DiClemente, 2018). 

While the disease model was well received by a range of professionals, many criticised it because research did not find that the progressive, irreversible progression of addiction through stages always occurs as predicted (Capuzzi & Stauffer, 2020). Additionally, many in the AOD field argued that the model did not address the complex interrelated factors that accompany dependency (Stevens & Smith, 2014). Finally, some professionals argued that the concept of addiction being a disease may also convey the impression to some individuals that they are powerless over their dependency and/or not responsible for the consequences of destructive addictive behaviours, which can be counteractive to treatment (Capuzzi & Stauffer, 2020).

Genetic and Neurobiological Theories

These theories suggest that some people may be genetically predisposed to develop drug dependency. For example, individuals usually begin substance use on an experimental basis. They then continue using because there is some reinforcement for doing so (e.g., a reduction of pain, experience of euphoria, social recognition, and/or acceptance, etc.). Some people may continue to use substances in a controlled or recreational manner with limited consequences while others progress to non-medical use and eventually develop a dependency. Why? Genetic and neurobiological theories propose that this is the result of a genetic predisposition to drug dependency (Fisher & Harrison, 2017). 

Factors being considered by researchers in the genetic transmission of dependency on alcohol include neurobiological features such as an imbalance in the brain’s production of ‘feel good’ neurotransmitters or in the metabolism of ethanol, which is the key component of alcohol (Stevens & Smith, 2014). Other researchers explored genetic differences in temperament and personality traits which they argued may lead to certain individuals becoming more vulnerable in the face of challenging environmental circumstances, leading to AOD use (Stevens & Smith, 2014). Genetic predispositions such as these may explain why some individuals develop dependency on AOD while others in similar situations do not.

The Psycho-dynamic Model

This model proposes that substance use may be due to an unintentional response to some difficulties that an individual experienced in their childhood. This explanation is based on the theory that was put forward by Sigmund Freud, whereby the problems of whether we are able to cope with difficulties as adults are linked to our childhood experience. Many counselling approaches today are based on this theory which aim to seek understanding of people’s unconscious motivations and to enhance how they view themselves (Capuzzi & Stauffer, 2020).

The Psycho-dynamtic model also believes that AOD use is often secondary to a primary psychological issue. In other words, alcohol and other drugs is a symptom rather than a disorder, and AOD use is a means to temporarily relieve or numb emotional pain. For example, an individual suffering from depression might self-medicate with stimulants to relieve the enervating effects of depression or manage their anxiety by using benzodiazepines (Fisher & Harrison, 2017). 

There is evidence to support this model, whereby childhood traumatic events are associated with mental health problems and substance use disorders. Wu et al. (2010) conducted a study among 402 adults who were receiving substance use disorder treatments. They revealed that almost all (95%) of the participants experienced one or more childhood traumatic events, and 65.9% of them experienced emotional abuse and neglect from their childhood. The authors also reported that the higher the number of childhood traumatic events experienced, the higher the risk of substance use disorders and mental health problems such as post-traumatic stress disorder. 

Personality Traits

Some theorists suggest that certain individuals have certain personality traits that are linked to AOD dependency. For example, dependency on alcohol has been associated with traits such as developmental immaturity, impulsivity, high reactivity and emotionality, impatience, intolerance, and inability to express emotions (Capuzzi & Stauffer, 2020).

Social Learning Model

This model suggests that social learning processes such as observing other peoples behaviours (i.e., modelling) and cultural norms are important in the process of learning behaviours. Albert Bandura proposed Social Learning Theory which would argue that substance use is initiated by environmental stressors or modelling people around you with “perceived status”. For example, a child observes their parents use alcohol in social situations and the child is therefore more likely to perceive that AOD use for social situations is appropriate (Harrison & Fisher, 2017); the association between socialisation and alcohol has been established.

The social learning model also recognises the influence of cognitive processes such as coping, self-efficacy, and outcome expectancies. Some researchers are currently focusing on how an individuals expectation of the effects of drugs influence the pattern of AOD use and resulting dependency. Russell (1976, cited in Wise & Koob, 2013) suggested that dependency on substance is not only chemical (biological) but also behavioural and social in nature. 

It has also been suggested that substance use occurs when an individual thinks substance use is a coping mechanism. This can be learned from television and film, social medial, peer influence, or messages from caregivers during childhood. The individual hopes the AOD use will relieve from them from stress (Stevens & Smith, 2014). 

Socio-cultural Model

Different from the previous models, the socio-cultural model perceives substance use as an issue of society as a whole instead of focusing only on the individual. People tend to overestimate the influence of internal and psychological factors while underestimating the external and environmental factors, even among some alcohol and other drugs workers (Gladwell, 2000, cited in Lewis, Dana, & Blevins, 2015). Thus, this model highlights the importance of how society shapes substance use behaviours, such as cultural attitudes, peer pressures, family structures, economic factors, and more (Bobo & Husten, 2000). For example, Coffelt et al. (2006) found that parents’ alcohol use are associated with their children’s drinking behaviour, whereby when the adult’s alcohol problems increased, the likelihood of their adolescent child’s alcohol use increased. 

The Biopsychosocial Model

Substance use behaviour cannot be explained or understood scientifically or spiritually based on a single variable, antecedent, or “cause”. Biological, psychological, learning, social and cultural context all contributes to explaining why addiction develops and maintains. The interactions between these factors are presented in The Biopsychosocial Model – arguably the most commonly used model to explain addiction today. The model suggests that substance use and the progression of substance dependency can be explained by recognising that the body and mind are connected within a social and cultural context (Skewes & Gonzalez, 2013).

The model allows any combination of biological, psychological, social and cultural factors to contribute to AOD misuse and dependency, rather than a single dominating factor. This is much more holistic and integrative when attempting to understand the determinant of addiction (Stevens & Smith, 2014).

References:

  1. Bobo, J. K., & Husten, C. (2000). Sociocultural influences on smoking and drinking. Alcohol Research and Health, 24(4), 225-232. 
  2. Capuzzi, D., & Stauffer, M. D., Sharpe, C. W. (2020). History and etiological models of addiction. In D. Capuzzi, & M. D. Stauffer (Eds.), Foundations of addictions counseling (pp. 1-22). Pearson Education.
  3. Coffelt, N. L., Forehand, R., Olson, A. L., Jones, D. J., Gaffney, C. A., Zens, M. S. (2006). A longitudinal examination of the link between parent alcohol problems and youth drinking: The moderating roles of parent and child gender. Addictive Behaviours, 31, 4, 593-605. https://doi.org/10.1016/j.addbeh.2005.05.034 
  4. DiClemente, C. C. (2018). Addiction and change: How addictions develop and addicted people recover. The Guilford Press.
  5. Fisher, G. L., & Harrison, T. C. (2017). Substance abuse: Information for school counsellors, social workers, therapists, and counsellors. Pearson Education. 
  6. Lassiter, P. S., & Spivey, M. S. (2018). Historical perspectives and the moral model. In P. S. Lassiter, & J. R. Culbreth (Eds.), Theory and practice of addiction counselling. (pp. 27-46). Sage Publications. 
  7. Lewis, J. A., Dana, R. Q., & Blevins, G. A. (2015). Substance abuse counselling. Cengage Learning.
  8. Skewes, M. C., & Gonzalez, V. M. (2013). The biopsychosocial model of addiction. In P. M. Miller, A. W. Blume, D. J. Kavanagh, K. M. Kampman, M. E. Bates, M. E. Larimer, N. M. Petry, P. D. Witte, S. A. Ball (Eds.), Principles of addiction: Comprehensive addictive behaviours and disorders (pp. 61-70). Academic Press.
  9. Stevens, P., & Smith, R. L. (2014). Substance abuse counselling: Theory and practice. Pearson Education. 
  10. Teesson, M., Hall, W., Proudfoot, & Degenhardt, L. (2012). Addictions. Taylor & Francis Group.
  11. Thombs, D. L., & Osborn, C. J. (2019). Introduction to addictive behaviours. The Guilford Press. 
  12. Wise, R. A., & Koob, G. F. (2013). The development and maintainance of drug addiction. Neuropsychopharmacology, 39, 254-262.
  13. Wu, N. S., Schairer. L. C., Dellor, E., & Grella, C. (2010). Childhood trauma and health outcomes in adults with comorbid substance abuse and mental health disorders. Addictive Behaviors, 35(1). 68-71. https://doi.org/10.1016/j.addbeh.2009.09.003 

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When “Trauma” Became a Buzzword: What We Gain and What We Lose when Clinical Language goes MainstreamWhen “Trauma” Became a Buzzword: What We Gain and What We Lose when Clinical Language goes Mainstream

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Not long ago, words like “triggered,” “gaslighting,” “narcissist,” and “neurodivergent” belonged almost exclusively to therapists’ offices and psychology textbooks. Now they’re everywhere; in workplace training sessions, community organisations, TikTok comment sections, and casual conversation between friends over coffee. That shift has brought some genuinely important changes. But it’s also introduced some problems worth taking seriously.

The real wins

It would be unfair to dismiss this cultural shift outright. There are meaningful gains. More people today can identify manipulation, coercive dynamics, and emotional harm than any previous generation. Mental health conversations have been destigmatised in ways that would have been hard to imagine twenty years ago. People who were historically silenced, particularly those from marginalised communities, finally have language that validates their experiences and gives them permission to leave harmful situations. That’s progress

But then there’s “concept creep” (pathologising the ordinary or “diagnostic inflation”)

Psychologists use the term “concept creep” to describe what happens when a word originally defined by strict clinical boundaries starts expanding to cover increasingly ordinary experiences. And that’s precisely what happened with “trauma.”

Clinically, trauma refers to experiences that overwhelm the nervous system i.e., genuine threats to safety, severe harm, events that exceed a person’s capacity to cope. These days, the same word is regularly applied to being disagreed with, having a relationship end, receiving criticism, or simply feeling uncomfortable. Events like relationship breakdowns, job loss, or failure can be genuinely devastating, and for some people, under some circumstances, they absolutely do meet the clinical threshold for trauma. The distinction isn’t really about the type of event. It’s about the impact on the nervous system and the person’s capacity to integrate the experience.

When everything qualifies as trauma, the word stops doing useful work. Worse, it can actually undermine the resilience people need to navigate a genuinely difficult world.

The nervous system problem

Here’s where it gets important. In actual “clinical” trauma, the brain’s threat-response systems activate intensely. Memory processing is disrupted. The body mobilises for survival in ways that can leave lasting marks.

Discomfort is different. It involves real emotional activation, it’s not pleasant, but cognitive flexibility remains available. The capacity to think, reflect, and choose a response is still intact.

When people learn to label ordinary emotional discomfort as trauma activation, the consequences compound. If discomfort feels equivalent to harm, avoidance becomes a logical response. But avoidance prevents the gradual building of tolerance. And without tolerance, the world gets smaller.

Trauma as identity and social currency

In some online communities, there’s an uncomfortable dynamic worth naming: being “highly traumatised,” “chronically triggered,” or “deeply misunderstood” can confer real social benefits — belonging, validation, moral authority, and attention.

This doesn’t mean the experiences aren’t real. But when distress becomes central to someone’s identity, letting go of that distress can start to feel like losing themselves. Recovery, paradoxically, becomes threatening.

The fragility trap

In certain environments, fragility functions as a kind of protection. If I am highly sensitive, others must accommodate me. Challenge becomes inappropriate. Accountability becomes unsafe. The person is shielded, but the cost is enormous.

Resilience, both psychologically and biologically, develops through graded exposure to stress. We become capable through encountering difficulty, not by avoiding it. Systems that never face adaptive pressure weaken over time. This is simply how human development works.

Why this moment matters

Several things are converging right now. Social media algorithms reward extreme emotional narratives. Identity formation increasingly happens in digital spaces that amplify distress. Institutions have frequently overcorrected towards protective language in ways that, whatever their intentions, can inadvertently signal that discomfort is dangerous. And while there’s been important growth in awareness of systemic injustice, the corresponding emphasis on individual agency has sometimes been lost.

We’ve swung from “suppress your emotions entirely” to “your emotions define reality.” Neither extreme serves people well.

Holding the middle ground

What good support actually looks like isn’t dismissing people’s experiences, it’s deepening them. The distinction that matters is between trauma-informed practice and what might be called trauma-indulgent practice.

Trauma-informed means understanding that harm genuinely impacts nervous systems, avoiding shame, recognising power imbalances, and creating safety. It’s grounded and necessary.

Trauma-indulgent means treating all discomfort as harm, reinforcing avoidance, allowing emotional reasoning to override reality, and quietly removing personal responsibility from the picture. It feels compassionate in the moment but tends to leave people worse off over time.

In practice, holding the middle ground means validating what someone feels while gently asking whether something was truly unsafe or simply hard. It means acknowledging difficulty while also reinforcing capacity. It means introducing a reality that doesn’t get much airtime in online spaces — that we can’t always control how those around us speak or behave, but we can build our own tolerance and capacity to regulate.

The question underneath everything

There’s a deeper ethical question running through all of this: are we reducing suffering in the long run, or just distress in the short term?

Protecting people from discomfort today, if it increases fragility tomorrow, is not a kindness. But exposing people to challenge without adequate safety and support risks re-traumatising those with genuine wounds.

The balance isn’t complicated to describe, even if it’s genuinely difficult to hold: safety, combined with graduated exposure, combined with a genuine sense of agency.

Anyone supporting others through difficulty needs a calm nervous system, a high personal tolerance for distress, and the capacity to sit with being perceived as insensitive when holding a difficult but necessary line. Clear values and genuine boundaries aren’t optional extras — they’re the model.

The world remains economically uncertain, socially polarised, and digitally relentless. People will encounter disagreement, rejection, imperfect institutions, and others who handle things badly. Preparing people for a world where everyone is perfectly considerate is not just unrealistic — it’s a disservice.

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How does methamphetamine (aka. crystal meth) affect the brain?How does methamphetamine (aka. crystal meth) affect the brain?

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To answer that question, I’ll need to explain a part of the brain called the Limbic System.

Within the brain there is a set of structures called the limbic system. There are several important structures within the limbic system: the amygdala, hippocampus, thalamus, hypothalamus, basal ganglia, and cingulate gyrus. The limbic system is among the oldest parts of the brain in evolutionary terms. It’s not just found in humans and other mammals, but also fish, amphibians, and reptiles.

The limbic system is the part of the brain involved in our behavioural and emotional responses, especially when it comes to behaviours we need for survival: feeding, reproduction and caring for our young, and fight or flight responses (https://qbi.uq.edu.au/brain/brain-anatomy/limbic-system).

The limbic system contains the brain’s reward circuit or pathway. The reward circuit links together several brain structures that control and regulate our ability to feel pleasure (or “reward”). The sensation of pleasure or reward motivates us to repeat behaviours. When the reward circuit is activated, each individual neuron (nerve cell) in the circuit relays electrical and chemical signals.

In a healthy world without addictive manufactured drugs, humans survive and thrive when they are rewarded for certain behaviours (cleaning, hard work, sex, eating, achieving goals etc), hence evolution has provided us with this feel-good chemical so that we will repeat pleasurable behaviours.

There is a gap between neurons called the synapse. Neurons communicate with each other by sending an electro-chemical signal from one neuron (pre-synaptic neuron) to the next (post-synaptic neuron). In the reward circuit, neurons release several neurotransmitters (chemical messengers). One of these is called dopamine. Released dopamine molecules travel across the synapse and link up with proteins called dopamine receptors on the surface of the post-synaptic neuron (the receiving nerve cell). When the dopamine binds to the dopamine receptor, it causes proteins attached to the interior part of the post-synaptic neuron to carry the signal onward within the cell. Some dopamine will re-enter the pre-synaptic nerve cell via dopamine transporters, and it can be re-released.

When a reward is encountered, the pre-synaptic nerve cell (neuron) releases a large amount of dopamine in a rapid burst. Dopamine transporters will remove “excessive” amounts of dopamine naturally within the limbic system. Dopamine surges like this help the brain to learn and adapt to a complex social and physical world.

Drugs like methamphetamine (a stimulant drug) are able to “hijack” this process contributing to behaviours which can be considered unnatural or potentially dysfunctional. A range of consequences can follow.

When someone uses methamphetamine, the drug quickly enters the brain, depending on how the drug is administered. Nevertheless, meth or ice is quick acting. Meth blocks the re-entry of dopamine back into the pre-synaptic neuron – which is not what happens naturally. This is also what cocaine does to the brain. However, unlike cocaine, higher doses of meth increase the release of dopamine from the presynaptic neuron leading to a significantly greater amount of dopamine within the synapse. Higher doses of cocaine will not release “more dopamine” from the pre-synaptic neuron like meth does. This is why after about 30 minutes or so, people who use cocaine will need more to maintain the high.

Dopamine gets trapped in the synapse (space between nerve cells) because the meth (like cocaine) prevents “transporters” from removing it back into the cell it came from. The postsynaptic cell is activated to dangerously high levels as it absorbs so much dopamine over a long period of time. The person using meth experiences powerful feelings of euphoria, increased energy, wakefulness, physical activity, and a decreased appetite.

When an unnatural amount of dopamine floods the limbic system like this over a long period of time, without reabsorption, then our brain is not replenished with dopamine, hence people who use meth often (even on a single occasion) may feel unmotivated, depressed, joyless, and/or pointlessness when they stop using. Figuratively speaking, the brain is “empty” or low on dopamine fuel, and it will take time to for dopamine to return to baseline levels and replenish itself. This may motivate the user to seek more methamphetamine to return to “normal”.

Methamphetamine can also cause a variety of cardiovascular problems, including rapid heart rate, irregular heartbeat, and increased blood pressure. Hyperthermia (elevated body temperature) and convulsions may occur with methamphetamine overdose, and if not treated immediately, can result in death (What are the immediate (short-term) effects of methamphetamine misuse? | National Institute on Drug Abuse (NIDA) (nih.gov))

SIGNS OF SUBSTANCE MISUSE OR ADDICTION

  • Finding it difficult to meet responsibilities.
  • Withdrawing from activities or not enjoying activities that used to provide satisfaction e.g. work, family, hobbies, sports, socialising.
  • Taking part in more dangerous or risky behaviours e.g., drink driving, unprotected sex, using dirty needles, criminal behaviour.
  • Behaviour changes e.g., stealing, exhibiting violence behaviour toward others.
  • Conflict with partner/family/friends, losing friends.
  • Experiencing signs of depression, anxiety, paranoia, or psychosis.
  • Needing more substance to experience the same effects
  • Cravings and urges to use the substance and symptoms of withdrawal when not using the substance.
  • Having difficulty reducing or stopping substance use.
  • Regretting behaviours while under the influence and continuing to use again.

(Substance abuse, misuse and addiction | Lifeline Australia | 13 11 14)

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| Mitchell WebbMitchell Webb| 0 Comment|

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