Definitions of Abnormality

Ever wondered what makes behaviour "abnormal"? There's actually no simple answer, which is why psychologists use four different approaches to tackle this tricky question.

Statistical deviation suggests that abnormal behaviour is simply rare or unusual - anything that deviates significantly from the average. Think about IQ scores: whilst someone with an extremely high IQ is statistically unusual, we wouldn't call them abnormal because it has positive connotations. This approach works well in real-life applications like identifying students who need extra support in schools.

Deviation from social norms focuses on unwritten rules about expected behaviour in society. The problem? These norms change over time and across cultures. Homosexuality was once considered abnormal in many societies, whilst behaviours like cannibalism might be acceptable in extreme survival situations (like the famous Andes plane crash).

Failure to function adequately looks at whether someone can maintain basic life standards. Rosenhan and Seligman identified key signs like severe personal distress and dangerous behaviour. However, what counts as "adequate" varies massively - sleeping during the day seems abnormal unless you're in Spain enjoying a siesta!

Key Point: No single definition perfectly captures abnormality, which is why psychologists often combine multiple approaches when assessing mental health.

Understanding Mental Health Conditions

Mental health conditions affect millions of people, but understanding their symptoms helps us recognise when someone might need support. Let's break down three major conditions you'll encounter in your studies.

Phobias are severe, irrational fears that seriously disrupt daily life. Behavioural symptoms include avoidance and fight-or-flight responses, whilst cognitive symptoms involve knowing the fear is excessive but being unable to control it. The emotional impact creates persistent anxiety that can be absolutely exhausting.

Depression goes far beyond feeling sad occasionally - it's an intense, persistent feeling of emptiness that affects everything. People lose motivation, experience sleep problems, and develop negative thought patterns about themselves and their future. The emotional symptoms include feeling worthless and having extremely low self-esteem.

OCD $Obsessive-Compulsive Disorder$ involves unwanted, intrusive thoughts (obsessions) that create anxiety, leading to repetitive behaviours or mental acts (compulsions) designed to reduce that anxiety. Behavioural symptoms include repetitive actions like hand-washing, whilst cognitive symptoms involve persistent, uncontrollable thoughts that feel impossible to ignore.

Remember: These conditions are real medical issues, not character flaws or things people can simply "snap out of."

The Behaviourist Approach to Phobias

Watson's groundbreaking work in 1915 showed us that phobias aren't mysterious conditions - they're learned responses that can be understood through conditioning principles. This knowledge completely changed how we approach treating these debilitating fears.

Classical conditioning explains how phobias develop through association. Unlike most learning, phobic conditioning often happens after just one traumatic event. Take Bagby's case study: a woman developed a phobia of running water after being trapped near rocks by a waterfall. The neutral stimulus (sound of running water) became associated with the trauma (being trapped), creating a lasting fear response.

Operant conditioning explains why phobias persist through Mowrer's two-process model. Once established through classical conditioning, phobias are maintained because avoiding the feared object reduces anxiety - which actually reinforces the fear. It's like a vicious cycle that keeps the phobia alive.

The famous Little Albert experiment demonstrated these principles in action, though it raises serious ethical concerns by today's standards. However, this research led to effective real-world treatments like exposure therapies, proving that understanding how phobias develop helps us figure out how to treat them.

Limitation Alert: This approach struggles to explain phobias of things people have never directly experienced, like fear of flying in someone who's never been on a plane.

Treating Phobias: Exposure Therapies

The brilliant thing about understanding how phobias work is that it leads to effective treatments. Both systematic desensitisation and flooding are based on the principle that you can "unlearn" fear responses.

Systematic desensitisation uses Wolpe's discovery that two competing emotions (like relaxation and anxiety) can't occur simultaneously. Patients work through three key processes: creating an anxiety hierarchy from least to most frightening situations, learning relaxation techniques, then gradually working up the hierarchy whilst staying relaxed.

This approach is particularly effective for specific object phobias and gives patients control over their treatment pace. It's also more acceptable to patients because it's less traumatic and teaches valuable relaxation skills they can use long-term.

Flooding takes a completely different approach by overwhelming the person's senses with their phobia until they realise no actual harm occurs. Through repeated exposure, extinction happens - the conditioned stimulus no longer produces the fear response because the person learns the phobia is harmless.

Whilst flooding can be more cost-effective for the NHS (often just one session versus multiple), it's ethically problematic due to its traumatic nature. It's also less effective for complex phobias like social anxiety because it doesn't teach useful coping strategies.

Clinical Reality: Most therapists prefer systematic desensitisation because it's gentler and gives patients transferable skills for managing anxiety.

The Cognitive Approach to Depression

Beck's cognitive theory revolutionised our understanding of depression by focusing on thinking patterns rather than just symptoms. His research revealed that depressed people aren't just sad - they're trapped in destructive thought cycles that maintain their condition.

Faulty information processing shows that depressed individuals make consistent errors in logic, adopting pessimistic viewpoints and thinking in absolute black-and-white terms. Weisman and Beck's research using attitude scales proved that depressed participants had significantly more negative self-assessments than healthy individuals.

Negative self-schemas mean that depressed people interpret all information about themselves negatively, even neutral or positive events. This creates a distorted lens through which they view their entire existence, making recovery extremely challenging without intervention.

The negative triad demonstrates how people become trapped in cycles involving negative views of themselves, the world, and their future. Meanwhile, Ellis's ABC model (Activating event, Belief, Consequence) shows how irrational beliefs following events, rather than the events themselves, create emotional disturbance.

Research by Newark found that 65% of anxious individuals agreed with irrational statements compared to just 2% of healthy controls, supporting the cognitive approach's core principles.

Critical Point: Whilst this approach has excellent real-world applications in CBT, critics argue that labelling thought patterns as "faulty" can blame victims for their condition.

Cognitive Treatments for Depression

Cognitive treatments work on the principle that changing thinking patterns can dramatically improve mood and behaviour. These approaches have become some of the most effective and widely used treatments for depression.

Cognitive Behavioural Therapy (CBT) follows a structured process: assessment and diagnosis, establishing baseline measurements, then systematically challenging negative thoughts through reality testing. For example, if someone believes "I fail at everything," they're given simple tasks to prove this belief wrong, gradually replacing irrational ideas with optimistic, rational beliefs.

Rational Emotive Behaviour Therapy (REBT) expands Ellis's ABC model by adding D (Dispute) and E (Effect). The premise is that emotional upset comes not from activating events but from the beliefs we attach to them. By challenging and replacing irrational beliefs with positive, rational alternatives, people can break free from destructive thought patterns.

These treatments require significant motivation and aren't quick fixes, but they're not physically invasive and teach valuable life skills. The effectiveness is supported by research showing that people with psychological problems consistently hold more irrational attitudes than healthy individuals.

However, cognitive treatments don't explain all aspects of mental health conditions - they struggle with positive symptoms like anger or hallucinations, and some depression occurs without obvious activating events.

Practical Advantage: Unlike medication, cognitive treatments teach skills that people can use independently long after therapy ends.

Biological Explanations for OCD

The biological approach suggests that OCD has physical causes rooted in genetics and brain chemistry. This perspective has led to important breakthroughs in both understanding and treating this challenging condition.

Genetic factors play a significant role, with twin and family studies by Bellodi showing that close relatives are more likely to develop OCD than distant relatives. McKeon found that OCD patients often have first-degree relatives with anxiety disorders, whilst Pauls discovered much higher OCD rates in relatives of sufferers compared to control groups.

Candidate genes associated with OCD include the SERT gene $which regulates serotonin - variations lead to low serotonin levels and increased anxiety$ and the COMT gene $which regulates dopamine - variations cause high dopamine levels seen in OCD patients$. However, with over 230 genes potentially involved, identifying exact genetic causes remains challenging.

The diathesis-stress model offers a balanced explanation: people inherit genetic vulnerability to OCD, but environmental stressors are needed to trigger the actual condition. This explains why not everyone with genetic risk factors develops OCD.

Cromer's research supporting this model found that OCD patients typically experienced traumatic events that triggered their symptoms, demonstrating the interaction between biological predisposition and environmental factors.

Research Reality: Understanding genetic factors helps explain why OCD runs in families, but the complexity means there's no simple genetic test for the condition.

Brain Structure and OCD

Brain imaging technology has revealed fascinating insights into how OCD affects neural circuits and brain structures. These discoveries have revolutionised both our understanding and treatment approaches.

Abnormal neurotransmitter levels play crucial roles in OCD. High dopamine levels (which normally regulate mood, reward, and motivation) are associated with OCD symptoms, whilst low serotonin levels increase anxiety because serotonin normally regulates mood and emotion.

Brain circuit abnormalities involve specific structures working incorrectly. The basal ganglia, responsible for motor functions, shows problems in OCD patients - people with head injuries in this region often develop OCD-like behaviours. When Max et al. found that disconnecting the basal ganglia from the frontal cortex reduced OCD symptoms, it confirmed this structure's importance.

The orbitofrontal cortex (OFC) and thalamus also show abnormal activity patterns. Overactive OFC increases anxiety and planning behaviours to avoid anxiety (classic OCD symptoms), whilst overactive thalamus increases motivation for repetitive cleaning and checking behaviours. Essentially, the OFC makes you worry, and the thalamus makes you perform compulsive actions.

This biological understanding has enabled medication development targeting specific neurotransmitters. However, the approach better explains repetitive behaviours than obsessive thoughts, making it somewhat incomplete.

Clinical Application: Brain imaging helps doctors understand which neural circuits aren't working properly, leading to more targeted treatments.

Biological Treatments for Mental Health

Biological treatments assume that mental health conditions result from chemical imbalances in the brain that can be corrected through medication. This approach has transformed millions of lives worldwide.

SSRIs (Selective Serotonin Reuptake Inhibitors) work by blocking reuptake channels on presynaptic neurons, preventing serotonin reabsorption. This increases serotonin levels in synapses, allowing continued stimulation of post-synaptic neurons and improving mood regulation.

Combination therapy pairs medication with CBT, creating powerful treatment partnerships. The drugs reduce emotional symptoms like anxiety, enabling patients to engage more effectively with psychological therapy. If SSRIs prove ineffective after 3-4 months, doses can be increased or combined with alternatives like tricyclics (an earlier type of antidepressant).

The advantages are significant: treatments are cost-effective for the NHS, reduce time off work, and don't require the same level of patient motivation as talking therapies. This makes them accessible to people who might struggle with intensive psychological interventions.

However, side effects including weight gain, sexual dysfunction, and memory loss can be problematic. Additionally, evidence reliability concerns exist because some pharmaceutical companies don't publish negative results from their drug trials, potentially skewing our understanding of effectiveness.

Treatment Reality: Biological treatments work best when combined with psychological approaches, giving patients both immediate symptom relief and long-term coping strategies.