The Best Study Methods for Passing Difficult Exams

Most people study the way they were taught in school – read the chapter, highlight the important parts, maybe write out some notes. The problem is that decades of cognitive science research consistently shows this approach is one of the least effective ways to retain information for high-stakes exams. The gap between how people naturally tend to study and how they should study is large enough to be the primary reason many candidates fail on their first attempt.

This guide covers the seven study methods with the strongest evidence base, explains the science behind why each one works, and gives you a practical implementation framework you can apply immediately to your certification prep.

Passive vs. Active Study: Understanding the Core Problem

The single most important distinction in study methodology is the difference between passive and active learning. Passive study involves receiving information – reading, watching, listening, highlighting. Active study involves producing information – recalling, explaining, applying, testing. Research published in Psychological Science in the Public Interest by Dunlosky et al. (2013) evaluated 10 common study techniques across 700 studies and rated them by effectiveness:

This research has been replicated consistently for over 30 years. The gap between high-utility and low-utility techniques is not marginal – it is substantial enough to determine pass or fail outcomes on certification exams.

Method 1: Retrieval Practice (The Most Powerful Study Tool Available)

Retrieval practice – also called the testing effect – is the act of pulling information out of memory rather than reviewing it passively. Every time you attempt to recall information, you strengthen the neural pathway that retrieves that information. Every time you re-read the same material, you primarily reinforce the sensation of familiarity, which does not translate to actual recall on exam day.

The most famous study on this was conducted by Karpicke and Roediger (2008) at Purdue University. Students who used retrieval practice (answering questions from memory) scored an average of 50% higher on delayed tests than students who used re-reading. This effect held even when students felt more confident after re-reading.

How to implement retrieval practice for certification prep:

• Start doing practice questions from Day 1 of your prep, before you feel ready. Getting questions wrong early is the mechanism of learning – not a sign you are not ready to study yet.
• After every study session, close your materials and write down everything you remember from the session without looking. This is called a “brain dump” and is one of the most efficient free recall exercises available.
• Use flashcards in retrieval mode: look at the front, actively recall the answer before flipping. Never just read the front and back together passively.
• When you get a practice question wrong, write the correct concept in your own words immediately. This converts the wrong answer into a learning event rather than just a score deduction.

You can practice under realistic timed conditions using InterviewForge’s free mock exam simulator, which gives you the exam pressure environment that makes retrieval practice most effective.

Method 2: Spaced Repetition (Study Less, Remember More)

Spaced repetition exploits a fundamental feature of human memory: information that is reviewed at increasing intervals over time is retained far longer than information reviewed in large blocks. This is the opposite of cramming, which clusters all review into a single intensive session and produces retention that degrades rapidly after the exam.

The optimal spacing intervals for long-term retention, based on Ebbinghaus curve research, are approximately: 1 day, 3 days, 1 week, 2 weeks, 1 month. Software like Anki automates these intervals, showing you each flashcard at the precise moment before you would forget it. This makes it possible to retain thousands of concepts with a fraction of the review time that traditional methods require.

For a complete guide to implementing this technique, read our article on spaced repetition explained for exam preparation.

Method 3: Active Recall With Elaboration (The “Why” Technique)

Certification exams test application, not definition recall. This means knowing a concept is necessary but not sufficient – you also need to know why it works the way it does, when it applies versus alternatives, and what it looks like in a real scenario. This is where elaborative interrogation and self-explanation become powerful supplements to retrieval practice.

For every concept you study, ask yourself these four questions:

1. What is this? (Definition – the starting point, not the endpoint)
2. Why does it work this way? (Mechanism – understanding the underlying logic)
3. When would I use this vs. a similar alternative? (Discrimination – critical for multiple choice)
4. What does this look like in practice? (Application – the clinical or real-world scenario)

Answering all four questions forces you to construct a full conceptual model rather than a surface-level definition. Exam questions that seem ambiguous to underprepared candidates become straightforward to those who have built this depth of understanding.

Method 4: Interleaved Practice (Mixing Topics During Study)

Most candidates study one topic at a time – blocking – moving to the next only when the first feels mastered. This feels organized and efficient but creates a specific problem on exam day: questions from different domains are interleaved randomly, and the brain must discriminate between similar concepts without the contextual cue of “I am currently in the reinforcement section.”

Interleaved practice – deliberately mixing questions from different topics during study sessions – trains this discrimination ability directly. A landmark study by Kornell and Bjork (2008) found that interleaved practice produced 43% better performance on a final test compared to blocked practice, even though students felt less confident during interleaved sessions (because the difficulty was higher in the moment).

Method 5: The Feynman Technique (Teach It to Know It)

The Feynman Technique, named after Nobel Prize-winning physicist Richard Feynman, is one of the most effective tools for identifying and closing knowledge gaps. The process is straightforward:

1. Choose a concept you have just studied.
2. Explain it out loud or in writing as if you are teaching it to someone with no background in the subject – using simple language, no jargon.
3. Identify every point where your explanation breaks down, becomes unclear, or requires you to look something up. These gaps are your actual knowledge gaps.
4. Return to the source material, fill the gap, then attempt the explanation again.

Most candidates can recite definitions but cannot explain the underlying concepts in plain language – and certification exams are specifically designed to expose this weakness. The Feynman Technique fixes it systematically. A single 15-minute session explaining one concept without notes will reveal more gaps than an hour of re-reading.

Method 6: Wrong-Answer Analysis (Turning Mistakes Into Mastery)

Most candidates look at which practice questions they got wrong, note the correct answer, and move on. This is leaving the majority of the learning value of each wrong answer on the table. A wrong answer – analyzed properly – is more valuable than a correct one, because it reveals a specific, actionable gap in your knowledge or exam strategy.

The full wrong-answer analysis protocol:

For more on specific active recall strategies, see our guide on best active recall techniques for studying.

Method 7: Full-Length Timed Practice Exams Under Realistic Conditions

Everything else on this list builds your knowledge base. For domain-specific study on RBT content, our guide on RBT data collection methods applies these active recall techniques directly. This method is what converts knowledge into exam performance. A full-length timed practice exam done under realistic conditions – desk, timer, no interruptions, no references – does several things simultaneously that no other study method replicates:

• Builds exam stamina. Sitting focused for 90 minutes or longer is a physical and cognitive skill that requires practice. Candidates who have never done this before exam day are at a significant disadvantage.
• Calibrates your pacing instincts. You learn which question types take 30 seconds and which take 90 seconds, which allows you to develop automatic time allocation without conscious calculation.
• Reveals integration gaps. Knowing concepts in isolation is different from applying them when surrounded by similar concepts in a timed, high-pressure environment. Practice exams expose integration failures that domain-specific review misses.
• Provides accurate readiness scores. Your score on a full timed practice exam – not your confidence level – is the most reliable indicator of whether you are ready to sit for the real exam.

Most exam coaches recommend completing at least 3–5 full-length timed practice exams in the final 2–3 weeks of preparation. Anything fewer does not provide enough data to confirm readiness or identify remaining gaps.

Building Your Personal Study Method Stack

These seven methods are not mutually exclusive – the most effective candidates use all of them in a structured sequence based on where they are in their preparation timeline:

Frequently Asked Questions

What is the single most effective study method for certification exams?

Retrieval practice – answering questions from memory without looking at notes – has the strongest evidence base of any study technique for certification exam preparation. Research shows it produces 50% better long-term retention than re-reading the same material. Combined with thorough wrong-answer analysis, it is the most efficient use of study time available.

Is highlighting or underlining a good study method?

No – highlighting and underlining are rated as LOW utility by the most comprehensive review of study technique research (Dunlosky et al., 2013). They create an illusion of engagement without requiring your brain to actually process or retrieve the information. If you want to mark important content, do it during active reading sessions, then immediately use retrieval practice on those marked items rather than re-reading the highlighting later.

How should I split my study time between reading and practice questions?

For certification exam preparation, the optimal split is approximately 30–40% content review and 60–70% active practice (retrieval practice, practice questions, timed exams). Most candidates get this backwards – they spend 80% reading and 20% on practice questions. Shifting toward active methods is the single most impactful change most candidates can make to their study routine.

Does the Feynman Technique work for all types of certification exams?

Yes, though it is most powerful for conceptually dense material where understanding the “why” behind procedures is important – such as ABA exams (RBT, BCBA), nursing licensure (NCLEX), and project management certifications (PMP). It is somewhat less applicable to pure fact-memorization exams, though even there it helps with accuracy and retention of related concepts.

The Bottom Line

The research is unambiguous: the study methods that feel most comfortable – re-reading, highlighting, summarizing – are consistently the least effective. The methods that feel harder in the moment – retrieval practice, interleaving, wrong-answer analysis – produce dramatically better exam outcomes. This phenomenon is called “desirable difficulty,” and it is the core principle behind evidence-based studying.

Switching to high-utility methods is uncomfortable at first because the difficulty signals genuine learning – your brain working to retrieve, discriminate, and apply, rather than simply recognize familiar text. That discomfort is not a sign you are studying poorly. It is a sign you are studying right. Lean into it, and your exam performance will reflect the difference.