A-Level Psychology: The Six Approaches You Need to Master

A familiar pattern in Year 13 mock results: a student who has revised psychology for weeks still bombs the paper. The reason is almost always the same — they’ve memorised content for each approach in isolation and can’t connect any of it when the paper asks them to compare. That’s the trap. The six approaches aren’t separate chapters you tick off; they’re six different ways of looking at the same human being. Get that, and everything else clicks.

Doesn’t matter whether you’re sitting AQA, Edexcel, or OCR—these theoretical frameworks show up everywhere. So here’s how to actually revise them, and more importantly, how to use them when you’re staring at a 16-marker with twenty minutes left.

The biological approach

A common biological-approach essay failure: two pages about “the brain” without naming a single structure, neurotransmitter, or specific mechanism. That kind of script typically scores in the bottom band — 4/16 territory. Don’t be that candidate.

The biological approach explains behaviour through physiology, genetics, and neurochemistry—but you’ve got to be specific about it. Focus on the nervous system, particularly neurons and synaptic transmission, and understand how neurotransmitters like serotonin, dopamine, and GABA influence behaviour. Maguire’s 2000 study on London taxi drivers’ hippocampi is your go-to for neuroplasticity, and Raine’s 1997 brain scans of murderers shows structural differences linked to violent behaviour.

Now, evaluation. This approach is scientifically rigorous—you can measure brain activity, you can replicate studies, you can test hypotheses. It’s given us practical applications in drug therapy too. But here’s the problem: it’s reductionist. Why does that matter? Because explaining depression as “low serotonin” ignores the fact that someone might be depressed because they’ve lost their job, or because their thinking patterns are skewed. Biology’s part of the picture. Not the whole frame. There’s also the ethical minefield of biological determinism—if your genes “made you” aggressive, are you responsible for your actions? Courts have actually grappled with this.

A persistent weakness in biological-approach essays: candidates gesture vaguely at “chemicals in the brain” rather than naming a specific neurotransmitter (serotonin, dopamine, GABA) and linking it to a specific behaviour. The fix is simple — always name the neurotransmitter. Always link it to a behaviour.

The cognitive approach

Here’s what catches students out: they describe the cognitive approach as “about memory” and stop there. It’s not just about memory. It’s about all internal mental processes—perception, attention, language, problem-solving—and how we can study things we can’t directly observe.

You need schema theory nailed down, plus the multi-store memory model and working memory model. Cognitive neuroscience matters here too because it bridges the gap between the cognitive and biological approaches by showing which brain areas light up during different mental tasks. Loftus and Palmer’s 1974 research on eyewitness testimony? That’s your cornerstone study. Learn it cold.

Strengths: it’s scientific, it’s generated practical applications like CBT, and it treats humans as active processors rather than passive responders. But—and this is a decent criticism—comparing the mind to a computer feels a bit mechanical, doesn’t it? Computers don’t have emotions. Computers don’t get anxious before exams. There’s also the ecological validity problem: lots of cognitive research happens in labs with artificial tasks that don’t reflect how memory actually works when you’re trying to remember where you parked your car.

In essays, show how cognitive explanations connect to other approaches. The examiners aren’t looking for six separate boxes in your head. They want to see you thinking.

The psychodynamic approach

Right. Freud. Everyone’s got an opinion.

The mainstream academic verdict: his theories are largely untestable, his research methods wouldn’t pass a modern ethics board, and his views on women were—generously—of their time. But you still need to know this stuff inside out, because the psychodynamic approach shaped psychology in ways the discipline is still dealing with. The unconscious mind. Defence mechanisms. The idea that childhood experiences echo through adult life. These concepts didn’t exist in psychology before Freud put them there.

Understand the structure of personality—id, ego, superego—and how the psychosexual stages supposedly work. Little Hans and Anna O are your case study illustrations, though they’re more clinical anecdotes than controlled research.

For evaluation, acknowledge the influence. Psychoanalysis as therapy came from here. But then hit hard on the lack of scientific rigour. The biggest problem — Popper’s classic objection — is falsifiability, or rather the lack of it. How do you disprove the existence of the unconscious? You can’t measure it. You can’t observe it directly. Freud could explain any behaviour as either a direct expression of unconscious drives or a defence against them—which means his theory explains everything and therefore, in scientific terms, explains nothing. That’s a sharper criticism than “Freud was wrong.”

A common evaluation mistake: writing that Freud’s theory “has been disproven” without saying what specifically or how. Vague. The sharper version is that concepts like the unconscious can’t be directly observed or measured, making them unfalsifiable—and unfalsifiable claims fall outside the scientific method. See the difference?

The humanistic approach

Ignore the people who tell you this approach doesn’t come up much. It does. And it’s often the comparison point in questions about free will versus determinism.

Maslow and Rogers developed humanistic psychology as a deliberate reaction against behaviourism and psychodynamism—both of which, they argued, treated humans as pushed around by forces beyond their control. The humanistic approach says no. You’ve got agency. You’ve got free will. You’re capable of growth.

Focus on self-actualisation, Maslow’s hierarchy of needs, Rogers’ conditions of worth, and congruence. The approach emphasises subjective experience—what does this feel like to you?

Strengths: it’s positive, it’s holistic, and person-centred therapy actually helps people. But there’s a real lack of empirical evidence here, and the concepts are slippery to test. What does “self-actualisation” look like in a lab? How do you measure “congruence”? There’s also cultural bias—the whole framework assumes an individualist society where personal growth is the goal. That’s not universal.

When discussing this approach, the contrast with behaviourism works brilliantly. One sees humans as passive products of conditioning; the other sees them as active agents shaping their own lives. Use that opposition.

The behaviourist approach

This one’s testable. This one’s replicable. This one’s properly scientific. It’s also — arguably — deeply incomplete, but let’s start with what it gets right.

Behaviourism focuses on observable behaviour learned through conditioning. You need Pavlov’s dogs for classical conditioning, Skinner’s rats and pigeons for operant conditioning (that’s positive reinforcement, negative reinforcement, and punishment), and Bandura’s Bobo doll experiment for social learning theory.

The approach has clear practical applications: treating phobias through systematic desensitisation, behaviour modification programmes, token economies. It emphasises the environment’s role in shaping who we become. All solid. But it’s reductionist—ignoring cognition entirely feels like studying a car by only looking at the wheels—and there are real ethical concerns about using conditioning to control behaviour. Plus, it underestimates biology. Turns out you can’t condition a pigeon to do literally anything; biology sets limits.

Quick one because Year 12s get this wrong every single year: negative reinforcement is NOT punishment. Negative reinforcement increases behaviour by removing something unpleasant—the beeping stops when you put your seatbelt on, so you’re more likely to put your seatbelt on. Punishment decreases behaviour. The June 2023 AQA paper had a scenario question on exactly this distinction, and a substantial fraction of candidates got it backwards. Don’t lose easy marks.

The evolutionary approach

Sometimes called evolutionary psychology, sometimes treated as an extension of the biological approach—either way, you need it.

The core idea: behaviours that increased survival and reproduction became more common in the gene pool over thousands of generations. Sexual selection, mate preferences, parental investment, jealousy, altruism—all of these have evolutionary explanations. Why do we fear snakes more readily than cars, even though cars kill far more people? Because snakes were a threat in our evolutionary past. Cars weren’t.

Here’s where it gets interesting for evaluation. Evolution provides ultimate explanations—why behaviours evolved in the first place—alongside proximate explanations—how those behaviours actually work now. Both matter. But evolutionary explanations can slide into determinism (“we’re just programmed to behave this way”), they’re often impossible to test directly (we can’t run experiments on our ancestors), and they’ve sometimes been misused to justify problematic behaviours. “Men are naturally unfaithful” is not a defence. Evolutionary psychology arguably works best when combined with other approaches rather than treated as a complete explanation on its own.

Using approaches in exam answers

So what do you actually do when you’re sitting the paper?

For “discuss” or “evaluate” questions on a single approach, structure matters. Define it first—briefly. Then explain key assumptions. Then outline relevant concepts and studies. Then evaluate with strengths and limitations, and make sure you’re using evidence to back up your points. Sounds obvious? Half the cohort still writes descriptive essays with evaluation tacked on at the end.

Comparison questions are trickier. The standard advice for anyone who freezes on these: pick two opposing features and build your answer around that opposition. Determinism versus free will. Nature versus nurture. Reductionism versus holism. Scientific versus unscientific. One clear contrast, explored properly, beats three vague ones every time.

Behaviourism sees humans as passive responders shaped entirely by the environment; the humanistic approach emphasises active free will. The biological approach is deterministic and reductionist; the humanistic approach is holistic and emphasises personal agency. See how these oppositions generate essay structure almost automatically?

How to use this guide

Don’t try to cram all six approaches in one evening. You’ll mix them up and panic. Work through one approach per session, then test yourself by writing a mini-paragraph explanation without looking at your notes. Can you define it? Can you name a key study? Can you give one strength and one limitation with evidence? If not, go back.

Once you’ve got all six solid, practise comparison questions—that’s where the higher marks live. If you’re still shaky on any approach, return to your textbook’s key study for that section and work outwards from the evidence.

The framing point worth holding onto: the approaches aren’t meant to be competing answers where one is “right.” They’re different lenses. A behaviour can be explained biologically AND cognitively AND through learning AND through evolution—all at once. Top-band candidates don’t pick a favourite approach and defend it; they switch between lenses depending on what the question needs. That flexibility is what earns top marks.

UpGrades helps you work through all six approaches with targeted practice questions and immediate feedback. The platform spots which approaches you’re weaker on and builds a revision pathway around that, so you’re not wasting time on stuff you already know. Worth using if you want to walk into the exam actually confident rather than just hoping for the best.