Worked solution
### Model Essay
**Introduction**
The cognitive approach to psychopathology posits that depression is caused by abnormal, irrational, and biased thinking processes. Rather than focusing on physical causes or external circumstances, cognitive theorists such as Aaron Beck and Albert Ellis emphasize how our mental processing of events determines our emotional state.
**AO1: Description of Cognitive Explanations**
**Beck's Cognitive Theory of Depression**
Aaron Beck (1967) proposed that some people are more vulnerable to depression because of cognitive vulnerabilities. He identified three main components to this vulnerability:
1. **Faulty Information Processing:** Depressed individuals tend to focus on the negative aspects of a situation and ignore positives. They also make cognitive errors, such as *overgeneralisation* (drawing a sweeping conclusion based on a single incident) and *catastrophising* (expecting the worst-case scenario).
2. **Negative Self-Schemas:** A schema is a mental package of ideas and information developed through experience. A negative self-schema is a pessimistic package of information about oneself, often acquired during childhood through parental rejection or peer criticism. Once activated, it leads to the cognitive biases mentioned above.
3. **The Negative Triad:** Beck suggested that depressed people develop a negative view of the world, which maintains their depression. This triad consists of:
* **Negative views of the self:** e.g., "I am worthless and a failure."
* **Negative views of the world:** e.g., "Everyone hates me and the world is a cruel place."
* **Negative views of the future:** e.g., "Nothing will ever get better for me."
**Ellis's ABC Model**
Albert Ellis (1962) proposed that good mental health is the result of rational thinking, while depression arises from irrational beliefs. He used the ABC model to explain this:
* **A - Activating Event:** An external event triggers an irrational response (e.g., failing an exam or experiencing a relationship breakdown).
* **B - Beliefs:** The individual's thoughts about the event, which can be rational or irrational. Ellis identified key irrational beliefs, such as *musturbation* (the belief that we must always succeed or be perfect) and *utopianism* (the belief that life must always be fair).
* **C - Consequences:** The emotional and behavioral outcomes of these beliefs. If the beliefs are irrational, they lead to negative, self-defeating consequences like depression.
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**AO3: Evaluation of Cognitive Explanations**
**Strengths**
* **Supporting Research Evidence:** There is strong empirical support for the link between negative thinking and depression. For example, Boury et al. (2001) monitored students' cognitions using the Beck Depression Inventory (BDI) and found that depressed students were far more likely to misinterpret information negatively and display elements of the negative triad. Similarly, Lewinsohn et al. (2001) conducted a prospective study measuring negative cognitions in adolescents. They found that those who initially scored high on negative thinking were significantly more likely to develop depression later, supporting the theory that faulty cognitions precede the onset of depression.
* **Practical Application to Therapy:** Perhaps the greatest strength of cognitive explanations is their successful application to treatment. Both Beck's cognitive therapy and Ellis's Rational Emotive Behavior Therapy (REBT) have been shown to be highly effective in treating depression. By challenging and restructuring irrational beliefs and negative thoughts, these therapies help patients recover. The real-world success of these treatments strongly supports the validity of the underlying cognitive theories; if altering cognitions relieves depression, then cognitions must play a causal role in the disorder.
**Limitations**
* **The Issue of Cause and Effect (Direction of Causality):** A major limitation is that most research establishing a link between cognition and depression is correlational. This makes it difficult to determine whether negative thinking actually *causes* depression, or if negative thinking is simply a *symptom* of depression caused by biological or situational factors. It is highly plausible that a chemical imbalance in the brain triggers a depressive mood state, which then causes the individual to interpret their world through a negative lens.
* **Incomplete Explanation (Biological Factors):** The cognitive explanation neglects biological influences. Research has shown that genetics play a significant role in depression, and low levels of the neurotransmitter serotonin are strongly linked to the disorder. Antidepressant medications (such as SSRIs) that increase serotonin levels are effective in alleviating depressive symptoms for many patients. The cognitive explanation cannot easily account for these biological aspects on its own, suggesting that a more integrated diathesis-stress model is required (where a genetic vulnerability is triggered by cognitive or environmental stressors).
* **Blaming the Patient:** By focusing entirely on internal cognitive processes, this approach can inadvertently place the blame for the disorder solely on the patient's thinking. While this can be empowering (as it implies the patient has the power to change their thoughts), it may lead clinicians to overlook external, situational factors such as domestic abuse, poverty, or traumatic life events that are realistically causing the individual's distress.
Marking scheme
### Mark Breakdown (Total: 20 marks)
* **AO1 (Knowledge and Understanding):** 8 marks
* **AO3 (Analysis and Evaluation):** 12 marks
### AO1: Knowledge and Understanding (Max 8 marks)
| Level | Mark Range | Description |
| :--- | :--- | :--- |
| **Level 4** | **7–8 marks** | Knowledge of cognitive explanations of depression is accurate and detailed. The description of Beck’s negative triad/cognitive biases and/or Ellis’s ABC model is clear and uses psychological terminology appropriately throughout. |
| **Level 3** | **5–6 marks** | Knowledge of cognitive explanations is mostly accurate with some detail. There may be minor omissions or lack of clarity in explaining specific concepts (e.g., schemas or specific cognitive errors). |
| **Level 2** | **3–4 marks** | Knowledge is present but lacks detail or contains some inaccuracies. The distinction between Beck and Ellis may be confused, or only one model is described with limited detail. |
| **Level 1** | **1–2 marks** | Knowledge is extremely limited, fragmented, or mostly inaccurate. Shows little understanding of cognitive theories of depression. |
| | **0 marks** | No relevant content. |
### AO3: Analysis and Evaluation (Max 12 marks)
| Level | Mark Range | Description |
| :--- | :--- | :--- |
| **Level 4** | **10–12 marks** | Evaluation is thorough, balanced, and highly effective. Analysis of supporting evidence (e.g., studies), practical applications (e.g., CBT), and limitations (e.g., cause/effect, biological alternatives) is well-developed. Psychological terminology is used effectively. |
| **Level 3** | **7–9 marks** | Evaluation is mostly clear and effective. Some evaluation points are well-developed (e.g., CBT application), but others may be less thorough or lack explicit connection to the explanations. |
| **Level 2** | **4–6 marks** | Evaluation is limited or basic. Points are often stated rather than explained, or are descriptive of research rather than analytical. There is limited critical depth. |
| **Level 1** | **1–3 marks** | Evaluation is very weak, disorganized, or absent. Points are superficial or largely irrelevant. |
| | **0 marks** | No relevant evaluation. |