Chapter 16 Treatment of Psychological Disorders

Psychotherapy

A treatment approach in which a trained professional uses psychological techniques to help a person understand and change their thoughts, emotions, and behaviours.

Example: A therapist helps a person identify unhealthy thought patterns and develop healthier ways of coping.

Key idea:
Psychotherapy = using psychological methods to treat psychological problems.

Eclectic psychotherapy

An approach in which a therapist uses techniques from different therapeutic approaches, choosing the methods that best fit the individual client.

Example: A therapist might use cognitive techniques to change negative thoughts while also using behavioural techniques to change avoidance behaviours.

Key idea:
Eclectic = mixing different therapy approaches.

Psychoanalysis

Freud’s therapeutic technique. It is aimed at getting the
patient to be aware of the unconscious sources of conflict. Uses techniques like free association and dream interpretation to help the person gain insight.

Example: A therapist helps a client explore childhood experiences and unconscious feelings that may be influencing their current relationships.

Key idea:
Psychoanalysis focuses on the unconscious mind and unresolved conflicts.

Insight

An understanding of the unconscious causes of one's thoughts, feelings, and behaviours.

Example: A person realizes that their extreme fear of rejection is connected to an unresolved childhood experience.

Key idea:
Insight = understanding why you behave the way you do.

Symptom substitution

The psychoanalytic idea that simply removing a psychological symptom without addressing its underlying unconscious cause will cause a different symptom to appear.

 If you just target the symptom and not the underlying cause, you’ll get rid of the symptom but another symptom will rise.

Example: If therapy only removes someone's anxiety without resolving the unconscious conflict causing it, Freud believed the anxiety might later appear as another psychological symptom. Remove depression you might get a drinking problem to arise

Key idea:
Treat the underlying cause, not just the symptom.

Free association

patients lie down and are told to say whatever comes to
their mind. The analyst tries to discover patterns. To not filter their words and just keep talking.

Example: The therapist says, "Tell me whatever comes to mind," and the client talks about their family, then a childhood memory, then a seemingly unrelated event.

Key idea:
Say whatever comes to mind → unconscious material may emerge.

Dream interpretation

The psychoanalytic technique of analyzing dreams to uncover unconscious wishes, conflicts, or thoughts.

Example: A therapist examines the meaning behind a recurring dream to explore what unconscious conflict it might represent.

Key idea:
Freud viewed dreams as a way to access the unconscious mind.

Manifest content

what literally happens in the dream

Example: You dream that you are being chased through a forest by a dog. The dog chasing you is part of the dream's manifest content.

Key idea:
Manifest = what you actually see/remember in the dream.

Latent content

The hidden, symbolic meaning that psychoanalysis believes lies underneath the manifest content of a dream.

Example: The dream about being chased by a dog might symbolically represent an unconscious fear or conflict.

Key idea:
Latent = hidden meaning underneath the dream.

Resistance

when patients engage in defense and don’t want to talk about
certain things.

Example: A therapist asks about a painful childhood experience, and the client repeatedly changes the subject or says they don't remember.

Key idea:
Resistance = the client avoids uncomfortable unconscious material.

Transference

The process in which a client unconsciously transfers feelings or expectations from an important person in their past onto the therapist.

Example: A client who had a very critical parent begins treating their therapist as though the therapist is also judging and criticizing them.

Key idea:
Past relationship → feelings transferred onto therapist.

⭐ Resistance vs. Transference

• Resistance = avoiding uncomfortable material.

• Transference = directing feelings about someone from the past toward the therapist.

Psychodynamic therapies

Modern therapies influenced by psychoanalysis that focus on unconscious processes, early relationships, and how past experiences influence current thoughts, feelings, and behaviours.

Example: A therapist helps a client understand how their childhood relationship with their parents influences their current romantic relationships.

Key idea:
Past experiences + unconscious processes → current behaviour.

⚠ Psychodynamic therapy is broader and generally less focused on Freud's original techniques than traditional psychoanalysis.

Interpersonal therapy

A short-term therapy that focuses on improving current relationships and interpersonal problems that contribute to psychological difficulties.

Example: A depressed person is struggling after losing a close friend. The therapist helps them improve their relationships and cope with the loss.

Key idea:
Interpersonal = relationships.

Humanistic and existential therapies

Therapies that emphasize personal growth, free will, meaning, self-awareness, and reaching one's potential.

Example: A therapist helps a client explore what they genuinely want from life rather than simply focusing on eliminating symptoms.

Key idea:
The focus is on growth, meaning, choice, and becoming your authentic self.

Carl Rogers

A major humanistic psychologist who developed person-centered therapy and emphasized empathy, acceptance, and unconditional positive regard.

Example: Rather than telling a client what they should do, Rogers's approach emphasizes creating a supportive environment where the client can understand themselves and make their own choices.

Key idea:
Rogers = person-centered therapy.

Person-centered therapy (client-centered therapy)

A humanistic therapy developed by Carl Rogers in which the therapist provides a supportive, accepting environment that allows the client to understand themselves and move toward personal growth.

Example: A therapist doesn't judge a client's choices or immediately tell them what to do. Instead, the therapist listens carefully and helps the client explore their own feelings and decisions.

Key idea:
The client is the expert on their own experience.

Unconditional positive regard

The therapist's attitude of accepting and valuing the client without judging or rejecting them, regardless of what they say or do.

Example: A client admits something they feel ashamed about, and the therapist responds with acceptance rather than criticism.

Key idea:
"I accept you as a person even when I don't approve of every behaviour."

⚠ This does not mean the therapist says every behaviour is good. It means the person is accepted and valued.

Empathy

The ability to understand and appreciate another person's feelings and perspective.

Example: A client says, "I feel like nobody understands me." The therapist tries to genuinely understand what that experience feels like from the client's perspective.

Key idea:
Empathy = understand the client's experience from their perspective.

Reflective listening

repeat back what you hear.

Example:

Client: "I studied so hard, but I still failed. I feel like I'm a complete failure."

Therapist: "You're feeling like all that effort wasn't enough, and that's making you question yourself."

Key idea:
Listen → understand → reflect it back.

Non-directive

A therapeutic approach in which the therapist does not tell the client what to do, but instead allows the client to guide the discussion and discover their own solutions.

Example: Instead of telling a client, "You should leave your job," the therapist asks questions and helps the client explore what they want.

Key idea:
Non-directive = therapist guides less; client guides more.

⭐ This is strongly associated with Carl Rogers' person-centered therapy.

Gestalt therapy

A humanistic therapy that emphasizes awareness of one's thoughts, feelings, and experiences in the present moment rather than focusing primarily on the past. Thought people are pattern sequence people. The idea is looking at a persons past and try to find a pattern so training them to do that.

Example: A therapist asks a client to focus on what they are feeling right now while talking about an unresolved conflict.

Key idea:
Gestalt = awareness of the present experience.

Existential therapy (Logotherapy)

A therapy based on existential ideas that focuses on helping people find meaning and purpose in life, especially when dealing with suffering, freedom, responsibility, and death.

Example: A person feels that their life has lost its purpose after a major setback. The therapist helps them explore what gives their life meaning.

Key idea:
Existential therapy = What is the meaning of my life?

Viktor Frankl

A psychiatrist and Holocaust survivor who developed logotherapy, an existential therapy based on the idea that humans are motivated by the search for meaning.

Example: Frankl argued that even when people cannot control their circumstances, they can still choose how they respond to them and find meaning in their lives.

Key idea:
Frankl → Logotherapy → Meaning.

Meaning

A sense that one's life has purpose, value, or significance.

Example: Someone may find meaning through relationships, helping others, creating something, or pursuing an important goal.

Key idea:
For Frankl, finding meaning can help people cope with suffering and difficult circumstances.

Behaviour therapies

Therapies based on the idea that problematic behaviours are learned and can therefore be changed by changing the environmental conditions that reinforce or condition them.

Example: A therapist helps someone overcome a fear by gradually exposing them to what they fear.

Key idea:
Behaviour therapy = change learned behaviours.

Operant conditioning

Learning in which the consequences of a behaviour influence how likely that behaviour is to occur again. Reward and Punishment.

Example: A student studies hard and receives a good grade, making them more likely to study hard in the future.

Key idea:
Behaviour → consequence → future behaviour changes.

Token economy

having a system of tokens that are rewards for good
behavior. The tokens can be used for goods (e.g. TV time).

Example: A patient earns points for attending therapy sessions and completing daily tasks. They can exchange the points for privileges.

Key idea:
Good behaviour → token → reward.

⭐ This is an example of operant conditioning because behaviour is being changed through consequences.

Classical conditioning

Learning that occurs when a previously neutral stimulus becomes associated with another stimulus and begins producing a learned response. Associate something with a stimulus

Example: A person develops a fear of dogs after being bitten by a dog. Eventually, seeing a dog can trigger fear.

Key idea:
Association between stimuli → learned response.

Extinction

The gradual weakening and eventual disappearance of a learned response when the reinforcement or association maintaining it is removed.

Example — classical conditioning:

A person has learned to fear dogs after being bitten. If they repeatedly encounter friendly dogs without anything bad happening, the fear response may gradually decrease.

Example — operant conditioning:

A child stops throwing tantrums when the parent no longer gives them candy after tantrums.

Key idea:
Learned behaviour → reinforcement/association removed → behaviour decreases.

Exposure therapy

A behavioural therapy in which a person is repeatedly and safely exposed to a feared stimulus or situation until their fear response decreases.

Example: Someone afraid of elevators repeatedly rides an elevator in a safe setting until their anxiety decreases.

Key idea:
Face the fear → fear decreases.

Systematic desensitization

A form of exposure therapy in which a person gradually confronts a feared stimulus, usually while using relaxation techniques.

Example: Someone afraid of dogs might progress through:

1. Thinking about dogs

2. Looking at pictures of dogs

3. Watching a dog from far away

4. Standing near a calm dog

5. Eventually petting the dog

○ 1. Train with meditation/relaxation
○ 2. Create an anxiety hierarchy (from imagining spiders to being covered with spiders)
○ 3. Expose yourself to the easiest part of the hierarchy, and get used to it
○ 4. Work your way up to the to

Key idea:
Gradual exposure + relaxation.

⭐ Think "systematic = step-by-step."

Flooding

A form of exposure therapy in which a person is exposed to the feared stimulus at full intensity rather than gradually.

Example: Someone with a severe fear of dogs is immediately placed in a room with a calm dog and remains there until their fear decreases.

Key idea:
Flooding = immediate, intense exposure.

Exposure and response prevention for OCD

A treatment for OCD in which the person is exposed to something that triggers their obsession while preventing themselves from performing the compulsive behaviour. Make them do a task without doing their ritual that removes the unpleasantness.

Example: Someone with contamination OCD touches a doorknob but is prevented from immediately washing their hands.

Eventually, the anxiety decreases without the person needing to perform the compulsion.

Key idea:
Exposure = face the trigger.

Response prevention = don't perform the compulsion.

⭐ This is one of the most important treatments to recognize for OCD.

Aversion therapy

A behavioural therapy that attempts to reduce an unwanted behaviour by pairing it with an unpleasant stimulus. aversion therapy is designed to make you dislike something
MORE.

Example: A person trying to stop an unwanted behaviour experiences an unpleasant consequence whenever the behaviour occurs, making the behaviour less appealing.

Key idea:
Unwanted behaviour + unpleasant consequence → behaviour decreases.

This is based on conditioning.

Albert Ellis

A psychologist who developed Rational-Emotive Therapy (RET), which focuses on being upset is a natural reaction that is unavoidable. But becoming miserable or depressed results from how we interpret the events.

Example: Someone thinks:

"If I fail this test, I'm completely worthless."

Ellis would challenge the irrational belief and help the person develop a more rational interpretation.

Key idea:
Ellis = irrational beliefs → emotional problems.

Rational-emotive therapy (RET)

A cognitive therapy developed by Albert Ellis that aims to identify and change irrational beliefs that cause unhealthy emotional reactions.

Example:

"Everyone must like me."

If someone doesn't like the person, they may become extremely distressed.

RET challenges the belief:

"It would be nice if everyone liked me, but it's not necessary."

Key idea:
Change irrational beliefs → change emotional reactions.

ABCD model

● A- activating event (e.g. you get fired)
● B- beliefs (e.g. “I must have a job”, “if I don’t have a job that’s
terrible and awful”, “my life is over”)
● C- consequences (you’re depressed because of B)
● D- disputing B

Activating event

The event or situation that triggers the person's belief and emotional reaction.

Example:
Getting rejected from a job.

Key idea:
A = What happened?

Belief

The person's interpretation or belief about the activating event, rather than the event itself.

Example:

Event: "I didn't get the job."

Belief: "I'll never be successful."

Key idea:
B = What do I think about what happened?

Consequences (emotional and behavioral)

In the ABCD model, the consequences are the emotional and behavioural reactions that result from a person's beliefs about an activating event.

Example:

A: Fail an exam
B: "I'm completely stupid."
C: Feel ashamed and stop studying.

• Emotional consequence: shame

• Behavioural consequence: stop studying

Key idea:
C = How do I feel and what do I do?

Disputing the beliefs

The process of challenging irrational or unhelpful beliefs and replacing them with more rational and realistic ones.

Example:

"I failed one exam, so I'm a failure."

becomes:

"I did poorly on one exam, but I can improve."

Key idea:
D = Challenge the irrational belief.

MUSTerbation (3 main “musts”)

Albert Ellis's term for irrational beliefs involving rigid demands that things "must" happen a certain way.

The three major "musts" are:

1. I must do well / be successful.

2. Other people must treat me well / fairly.

3. Life must be easy and go the way I want.

Example:

"I MUST get an A, everyone MUST like me, and life MUST be fair."

When reality doesn't meet these demands, the person experiences unnecessary emotional distress. He says we must tell ourselves i would PREFER.

Key idea:
MUSTerbation = rigid "musts" create irrational expectations.

⭐ A useful way to remember the three:

ME → THEM → LIFE

I must succeed → They must treat me well → Life must be fair/easy.

Aaron Beck

A psychologist/psychiatrist who developed cognitive therapy and argued that psychological distress is strongly influenced by negative and distorted patterns of thinking.This is where you blame yourself
for all the bad things, and give credit to external variables for all the good
things.

Example: A depressed person interprets one failure as proof that they are worthless.

Key idea:
Beck = negative thinking → emotional problems.

Cognitive therapy

A therapy that focuses on identifying and changing unhelpful or distorted patterns of thinking that contribute to psychological problems.

Example:

"Nobody likes me."

The therapist helps the person examine the evidence and develop a more balanced interpretation.

Key idea:
Change thoughts → change emotions and behaviour.

Cognitive restructuring

The process of identifying, evaluating, and changing distorted or irrational thoughts into more realistic and helpful ones.

Example:

"I failed this test, so I'll never succeed."

⬇

"I did poorly on this test, but I can identify what I need to improve."

Key idea:
Find distorted thought → challenge it → replace it.

Challenging the attributional style

A cognitive therapy technique that involves challenging a person's habitual way of explaining negative events, particularly a depressed attributional style.

Remember the depressed attributional style from your previous unit:

Internal + Stable + Global

Example:

"I failed because I'm stupid, I'll always be stupid, and I'm bad at everything."

The therapist challenges this:

"Could there be another explanation? Maybe you didn't study the right material for this particular test."

Key idea:
Challenge the way you explain negative events.

Mindfulness meditation

A practice involving intentionally paying attention to one's present-moment thoughts, feelings, bodily sensations, and surroundings without judging them.

Example:

Instead of thinking:

"I'm anxious. Something is wrong with me."

You notice:

"I'm experiencing anxiety right now."

You observe the feeling without immediately trying to eliminate or judge it.

Key idea:
Notice the present moment without judgment.

Cognitive-behavioural therapy (CBT)

A therapy that combines cognitive techniques to change unhelpful thoughts with behavioural techniques to change problematic behaviours.

Example:

A person with social anxiety thinks:

"Everyone will laugh at me."

The therapist:

1. Challenges the thought.

2. Helps the person gradually enter social situations instead of avoiding them.

Key idea:
CBT = change thoughts + change behaviours.

Rational-emotive behaviour therapy (REBT)

The updated name for Albert Ellis's Rational-Emotive Therapy (RET).

It focuses on identifying and disputing irrational beliefs that lead to unhealthy emotional and behavioural consequences.

Example:

"I MUST succeed, otherwise I'm worthless."

⬇

Challenge the belief.

⬇

"I'd strongly prefer to succeed, but failing doesn't make me worthless."

Key idea:
REBT = Ellis + irrational beliefs + disputation.

Dialectical behaviour therapy (DBT)

a targeted type of CBT therapy designed

Example: A person who becomes extremely emotional and impulsive learns skills for managing intense emotions, tolerating distress, and improving relationships.

Key idea:
DBT = acceptance + change.

⭐ The word dialectical refers to balancing two seemingly opposite ideas: acceptance and change.for borderline personality disorder, which is associated with a high suicide
rate.

Couple therapy

Therapy designed to help romantic partners improve their relationship, communication, and ability to resolve conflicts.

Example: A couple constantly argues about finances, so a therapist helps them communicate more effectively and solve the underlying conflict.

Key idea:
Couple therapy = improve the relationship between partners.

Family therapy

Therapy that involves multiple family members and focuses on improving communication and relationships within the family system.

Example: A teenager is experiencing behavioural problems, so the therapist works with the teenager and parents to improve family communication and interactions.

Key idea:
Family therapy = treat problems within the family system.

Group therapy

Therapy in which multiple clients participate together with one or more therapists.

Example: Eight people with social anxiety meet weekly with a therapist and practice interacting with one another.

Key idea:
Group therapy = several clients + therapist(s).

⭐ One benefit is that people can realize they aren't alone in their struggles.

Self-help groups

Groups in which people with similar problems support and help one another, usually without a professional therapist leading the group.

Example: People struggling with addiction meet regularly to share experiences and support each other's recovery.

Key idea:
Self-help = peer support rather than professional therapy.

Psychopharmacology

The study and use of medications to treat psychological disorders by affecting brain and nervous-system functioning.

Example: A psychiatrist prescribes an antidepressant to someone with major depressive disorder.

Key idea:
Psycho + pharmacology = treating psychological problems with drugs.

Antipsychotic drugs (e.g. Thorazine, Haldol)

The most commonly used ones decrease the activity of dopamine (which is
thought to be involved in psychotic conditions like schizophrenia). They do
help with positive symptoms. However, they can cause a motor problem
called tardive dyskinesia

Tardive dyskinesia

A potentially serious side effect of long-term use of some antipsychotic medications involving involuntary, repetitive movements, often of the face, mouth, tongue, or limbs.

Example: After long-term antipsychotic treatment, a person develops repeated involuntary tongue movements and facial movements.

Key idea:
Tardive dyskinesia = involuntary movements from long-term antipsychotic use.

⭐ "Tardive" = delayed → it can appear after prolonged treatment.

Deinstitutionalization

The movement toward closing large psychiatric institutions and treating people with mental disorders in community-based settings instead.

Example: Instead of keeping someone with schizophrenia in a psychiatric hospital for years, they may live in the community and receive medication and support services.

Key idea:
Deinstitutionalization = moving from institutions → community care.

Atypical antipsychotics

Newer/second-generation antipsychotic medications that generally affect multiple neurotransmitter systems, particularly dopamine and serotonin, and were developed partly to reduce some side effects associated with older antipsychotics.

Examples:

• Clozapine

• Risperidone

• Olanzapine

Key idea:
Atypical = newer generation of antipsychotics.

Anxi-anxiety drugs

Medications used to reduce anxiety and related symptoms. It turns out that these drugs are very addictive, especially when used long term. They are useful for short term emergency intervention

Example: A person with severe anxiety may be prescribed medication to reduce excessive nervousness and physiological arousal.

Key idea:
Anxiolytic = anti-anxiety.

Benzodiazepines (e.g. Valium, Xanax)

A class of anti-anxiety medications that reduce anxiety and produce calming effects by enhancing the effects of GABA, an inhibitory neurotransmitter. They slow the brain down, and make you feel relaxed.

Examples:

• Valium (diazepam)

• Xanax (alprazolam)

Example: Someone experiencing severe short-term anxiety may be prescribed a benzodiazepine.

Key idea:
Benzodiazepines → fast-acting anxiety reduction.

Antidepressant drugs

Most antidepressants work on the neurotransmitter serotonin. They stop the sending neuron from doing reuptake. Basically, this is a roundabout way of getting more serotonin across the synapse.

Medications used primarily to treat depression, and some are also used for anxiety and other disorders.

Selective serotonin reuptake inhibitors/SSRIs (e.g. Prozac, Celexa)

Antidepressants that reduce the reuptake of serotonin, leaving more serotonin available in the synapse. They come with serious possible side-effects

Examples:

• Prozac (fluoxetine)

• Celexa (citalopram)

Example: Someone with major depressive disorder takes an SSRI to help reduce depressive symptoms.

Key idea:
SSRI → serotonin reuptake ↓ → serotonin remains available longer.

⭐ S = Serotonin

Tricyclic antidepressants (serotonin and norepinephrine)

Older antidepressants that primarily reduce the reuptake of serotonin and norepinephrine.

Key idea:
Tricyclic → serotonin + norepinephrine.

Compared with SSRIs, they tend to have more side effects and are therefore used less often as a first choice.

MAO inhibitors (serotonin, norepinephrine, and dopamine)

Antidepressants that inhibit the enzyme monoamine oxidase (MAO), which normally breaks down neurotransmitters such as serotonin, norepinephrine, and dopamine.

Therefore:

MAO inhibition → less neurotransmitter breakdown → more available.

Key idea:
MAOI → serotonin + norepinephrine + dopamine.

⚠ MAOIs can have significant drug and food interactions, which is an important reason they aren't usually the first choice.

Lithium

A medication commonly used as a mood stabilizer, particularly for bipolar disorder.

Example: A person with bipolar disorder takes lithium to help prevent or reduce episodes of mania and depression.

Key idea:
Lithium → bipolar disorder → mood stabilization.

St. John’s wort

An herbal supplement sometimes used for mild to moderate depression.

Key idea:
It is a plant-based treatment, not a standard prescription antidepressant.

Phototherapy

A treatment involving exposure to bright artificial light, commonly used for seasonal affective disorder (SAD).

Example: A person with winter depression sits in front of a therapeutic light box for a prescribed amount of time each day.

Key idea:
Phototherapy = light therapy → SAD.

⭐ Connect this to your earlier term:

SAD → less sunlight → phototherapy

Stimulants (e.g. Ritalin) for ADHD

Stimulant medications used to reduce symptoms of ADHD, such as inattention and impulsivity.

Example: A child with ADHD takes Ritalin (methylphenidate) to improve their ability to focus and control impulses.

Key idea:
Stimulants can increase attention and reduce ADHD symptoms.

⚠ This can seem counterintuitive:

"Why would you give a hyperactive person a stimulant?"

Because in ADHD, stimulant medication can improve attention and behavioural control.

Electroconvulsive therapy (ECT)

● This used to be used more frequently. It is now used for treatment resistant
depression (everything else has been tried) where the person is at high suicide risk.

● They give you a general anaesthetic, and then run an electric current through your
head. This causes convulsions.

● There is a risk of amnesia, which is usually
temporary

Transcranial magnetic stimulation

A treatment that uses magnetic pulses to stimulate specific areas of the brain, without intentionally causing a seizure.

Example: Magnetic stimulation is repeatedly applied to an area of the brain involved in mood regulation to treat depression.

Key idea:
TMS = magnetic stimulation of the brain.

⭐ ECT vs TMS

ECT
→ Electrical current
→ Intentionally causes a seizure
→ Often used for severe depression

TMS
→ Magnetic pulses
→ Does not intentionally cause a seizure
→ Often used for depression

Psychosurgery

A treatment involving surgically altering or destroying specific brain tissue in an attempt to treat severe psychological disorders. done for treatment resistant depression.

Example: A surgeon alters a specific brain region believed to contribute to severe psychiatric symptoms. A Lobotomy

Key idea:
Psychosurgery = surgery on the brain to treat psychological disorders.

⚠ It is extremely rare today compared with historical practices.

Prefrontal lobotomy

A historical form of psychosurgery in which connections involving the prefrontal cortex were surgically severed or damaged in an attempt to treat severe mental illness.

Example: In the past, a person with severe psychiatric symptoms might have had parts of the frontal brain connections destroyed.

Key idea:
Lobotomy = destroying/severing connections involving the prefrontal cortex.

⚠ It often caused serious personality and cognitive changes and is now considered an outdated and highly problematic treatment.

Cingulotomy

A type of psychosurgery in which a small portion of the cingulate cortex is surgically altered, historically and sometimes currently used in very severe, treatment-resistant cases such as OCD.

Example: A person with extremely severe OCD that has not responded to medication or psychotherapy may be considered for a cingulotomy.

Key idea:
Cingulotomy = surgically altering part of the cingulate cortex.

Natural improvement

Improvement in psychological symptoms that occurs without receiving a particular treatment, simply because of the natural course of the disorder or other factors.

Example: A person's depression improves over several months even though they did not receive psychotherapy.

Key idea:
Natural improvement = getting better without the treatment being tested.

⭐ This is important because researchers need to distinguish:

"Did therapy cause the improvement?"

from:

"Would the person have improved anyway?"

Hans Eysenck

Hans Eysenck (famous for his work on personality) argued that
psychotherapy is ineffective.

Key idea:
Eysenck = challenged the effectiveness of psychotherapy.

⚠ His conclusions have been heavily debated, and later research generally found psychotherapy to be beneficial.

Meta-analysis

A statistical method that combines the results of many studies examining the same question to estimate the overall effect.

Example: Instead of looking at one study of CBT, researchers combine results from 50 studies comparing CBT with control groups.

Key idea:
Meta-analysis = combine many studies → overall conclusion.

⭐ Think:

Many studies → one big analysis.

Effect size

A statistic that indicates how large or meaningful the difference between groups is, rather than simply whether the difference is statistically significant.

Example:

A study finds that people receiving psychotherapy improve more than people receiving no treatment.

The effect size tells us how much better they improved.

Key idea:
Effect size = how BIG is the effect?

Efficacy of psychotherapy compared to nothing

The extent to which psychotherapy produces better outcomes than receiving no treatment, often demonstrated by comparing psychotherapy groups with control groups.

Example:

Researchers divide depressed people into:

Group A: Receives CBT

Group B: Receives no treatment

If Group A improves substantially more than Group B, psychotherapy demonstrates efficacy compared with nothing.

Key idea:
Therapy vs nothing → does therapy actually help?

Efficacy of different types of psychotherapy

The extent to which different forms of psychotherapy are effective at improving psychological disorders, usually determined by comparing their outcomes in research studies.

Example: Researchers compare CBT, psychodynamic therapy, and humanistic therapy to see whether one produces better outcomes than the others.

Key idea:
Different therapies → compare their effectiveness.

So don't automatically think:

"One therapy is always the best."

Instead think:

Different therapies can be effective, and effectiveness can depend on the disorder and circumstances.