Everyone remembers the headline from the big adolescent trial: CBT and antidepressants performed about the same. Almost nobody remembers the result underneath it, which is the one that actually changed clinical practice. This page makes sure you remember the right thing.
📚 What you need to know
CBT is the most widely used psychological treatment for depression and is the practical application of Beck’s cognitive theory.
The focus is on the here-and-now rather than the past.
The goal is to help clients identify, challenge and replace irrational thoughts from the negative triad, while building independence.
Seven techniques to know, including cognitive restructuring, guided discovery and behavioural activation.
A course usually lasts 5 to 20 sessions, weekly or fortnightly, each 30 to 60 minutes.
March et al. (2007) is your study, and the important result is not the improvement rate.
Concept links: measurement (longitudinal design) and bias (self-report).
The techniques
Technique
What it involves
Cognitive restructuring
Turning negative thoughts into more balanced, positive ones.
Guided discovery
The therapist challenges irrational thoughts and beliefs by asking questions rather than lecturing.
Journaling
Recording thoughts, feelings and behaviours between sessions.
Behavioural activation
Activity scheduling to encourage action and reduce procrastination.
Relaxation techniques
Deep breathing, muscle relaxation and visualisation.
Role-playing
Practising difficult or anxiety-provoking scenarios in a safe setting.
Homework
Recording positive events, which are then discussed in therapy.
Behavioural activation is the one that looks out of place, and it is worth pausing on. It is not a thinking technique at all — it comes straight from the operant conditioning page, where lost positive reinforcement drove withdrawal. So a therapy named “cognitive behavioural” really is doing both jobs. Pointing that out shows you can see how the approaches connect rather than treating them as separate revision boxes.
🔬 March et al. (2007)
CBT, medication, and both, in adolescents
AIM
To compare the effectiveness of CBT, SSRIs (fluoxetine), and combined CBT and SSRIs for treating adolescents with MDD.
PARTICIPANTS
327 adolescents aged 12 to 17 with diagnosed MDD, from 13 US locations.
PROCEDURE
Participants were randomly assigned to an SSRI group, a CBT group, or a combined group. They were interviewed, with responses measured on the Children’s Depression Rating Scale (CDRS): a score above 40 meant MDD was present, and below 28 meant remission. The study ran for 36 weeks.
RESULTS
After 36 weeks, 81% improved in the SSRI group, 81% in the CBT group and 86% in the combination group. Suicidal ideation decreased in the CBT and combination groups, but not significantly in the SSRI-only group.
CONCLUSION
Adolescents respond well to CBT and to combined CBT and drug therapy. Combining therapies may enhance the safety of medication and be the most effective treatment option.
Two of the bars are identical and the third is five points higher. If the bars were all you had, you would conclude the three treatments were much of a muchness. The row underneath is what separates them.
This is the point to take into the exam. On symptom improvement, CBT and medication tied at 81%, and combining them added five points — a small difference that may not be statistically meaningful. What genuinely distinguishes the groups is safety: suicidal ideation fell where CBT was involved and did not fall significantly with medication alone. That is why the conclusion talks about combining therapies enhancing the safety of medication.
Most candidates write “the combination was best because 86% is higher than 81%”. That answer is weak, because five percentage points across three groups of around 100 people is not much to lean on. The strong answer says the treatments were equivalent on symptoms and differed on safety. Same study, completely different level of thinking.
Evaluating CBT for MDD
Strengths
It is non-invasive, involving no drugs and no physical side effects, unlike biological treatments.
It is individualised: sessions can be tailored to the client, letting them progress at their own pace and accounting for individual differences.
It builds independence, so the skills stay after the sessions end — unlike a prescription that stops working when it stops.
March’s design was randomised, ran for 36 weeks, and used a standardised rating scale.
Limitations
The focus on the present may not suit people who need to revisit past trauma to recover, which limits its usefulness.
Some people struggle with talking therapies due to lack of confidence, willingness, or verbal and intellectual skills.
It is culturally biased toward individualistic cultures, since it targets individual thought and one-to-one work.
It requires trained therapists, time and often a waiting list, unlike medication.
Linking to the concepts
Measurement: March’s study is longitudinal, conducted over a series of months, so progress can be assessed by measuring symptoms at specific points against the baseline. Progress of this kind can only be properly judged over time, which gives longitudinal research good ecological validity — real behaviour measured in real time.
Bias: participants were self-reporting on a rating scale, so they may have succumbed to social desirability bias, under-reporting their symptoms, or to a practice effect, becoming so used to the questionnaire that their answers grew less natural over time. Researchers must consider how to guard against both in order to preserve the validity of the findings.
EXAM ANSWER
Compare and contrast biological and psychological treatments for one disorder. [22 marks]
Set up both, at their own level
SSRIs act on serotonin reuptake. CBT targets the negative triad through restructuring, guided discovery and behavioural activation.
Compare on outcome
March et al.: 81% vs 81% improvement, 86% combined. Effectively equivalent on symptoms.
Contrast on what they leave behind
Drugs manage symptoms while taken; CBT builds skills that persist, which protects against relapse.
Contrast on access and on risk
Drugs are cheap and available; CBT needs therapists and waiting lists. But suicidal ideation fell only where CBT was involved.
Resolve it
They operate at different levels of explanation, which is precisely why combining them worked best.
Conclude: not rivals, but complementary levels of the same problema compare-and-contrast question wants a resolution, not two separate essays
💡 Exam tips
Name four or five techniques with a phrase each. Listing seven with no detail scores worse.
Always report the suicidal ideation finding. It is the most important result in the study.
Question whether a five point difference across three groups is meaningful. That is real evaluation.
The CDRS cut-offs (above 40 present, below 28 remission) show you know how the outcome was operationalised.
Reuse the culture bias criticism from the previous page — it applies to CBT wherever it appears.
This page connects to Beck, to schemas, and to operant conditioning. Say so; synthesis is what the top band rewards.
⚠ Common mix-ups
Saying the combination was clearly best on symptoms. 86% vs 81% is a small margin.
Missing the safety result. It is the reason the conclusion recommends combining.
Confusing CBT with psychoanalysis. CBT works on the here-and-now, not childhood exploration.
Calling CBT non-invasive but forgetting it is demanding. Homework and attendance are real barriers.
Generalising from adolescents to everyone. The sample was aged 12 to 17.
Treating CBT as purely cognitive. Behavioural activation is a behavioural technique inside it.
A closing note. That is the whole of Health and Wellbeing. If reading about depression or addiction over these pages has felt uncomfortably familiar at any point, please talk to someone — a parent, a teacher, your school counsellor or your doctor. Understanding a topic academically and getting support for yourself are two different things, and you are allowed to do both.
Up next: back to How Genes Contribute to Depression to start the option again for revision. Second time through, read the evaluation boxes first — the arguments are what get marked, and they connect across all twenty pages.
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